**Home page for Yunping Xi, Ph.D.**

**A professor of the Department of
Civil, Environmental and Architectural Engineering **at the University of Colorado at Boulder.

**The University Administrator for **the Colorado Local Technical Assistance
Program (CLTAP)** **

Email address: yunping.xi@colorado.edu

**
**

There are six research areas for Prof. Yunping Xi. The following link provides some information
on the six areas

Research areas of Prof.
Yunping Xi

**Class
websites**

·
CVEN
3161 Mechanics of Materials I

·
CVEN
4161 Mechanics of Materials II

·
AREN
4317 Architectural Engineering Senior Design

·
CVEN 4899 Civil
Engineering Senior Design

·
CVEN
5161 Advanced Mechanics of Materials I

· CVEN 5585 Advanced Topics in RC Design

·
CVEN
5831 Construction Materials

·
CVEN 5831
Infrastructural Rehabilitation

·
CVEN
5831 Stability of Structures

·
CVEN
6161 Advanced Mechanics of Materials II

______________________________________________________________________________________

Professor

Civil, Environmental, and Architectural Engineering

Tel: (303)
492-8991, Fax: (303) 492-7317, Email: yunping.xi@colorado.edu

______________________________________________________________________________________

Ph.D. in Structural
Engineering, Northwestern University, Evanston, IL. (1991).

M.S. in Structural Engineering, Central Research
Institute of Building and Construction,

B.S. in Civil Engineering, Beijing Institute of
Civil Engineering and Architecture (1982).

2005 – Present Professor,

2000 – 2005 Associate professor,

1997 – 2000 Assistant
professor, University of Colorado at Boulder

1993 – 1996 Assistant
professor, Drexel University

1991 – 1993 Research scientist, Northwestern
University

1987 – 1988 Visiting
scholar, Northwestern University

1985 – 1987 Structural
engineer, Beijing Central Research Inst. of Building and Construction.

1982 – 1983 Structural
engineer, Beijing Design Institute of Building and Construction.

**Research**

__Research interests and fundings__

(1) Theoretical analysis and experimental
study on long term durability of cementitious materials and reinforced concrete
structures, including creep, shrinkage, fracture, freeze/thaw, and
alkali-silica reaction of concrete; high temperature damage and radiation
effect on concrete; chemical and moisture transport in concrete; and
chloride-induced corrosion of steel in concrete.

(2) Monitoring and simulation
of long-term performance of reinforced concrete and steel structures. Development of simulation models for
long-term deterioration processes in reinforced concrete structures, installing
sensor network on concrete structures, and integrating simulation models and
sensor network for utilization of monitoring data to calibrate model parameters
in real time.

(3) Evaluation of existing
nuclear power plant structures: containment structures, bioshieldings,
and dry casks. Leakage repair of
wellbores in oil and gas industry, and CO2 underground storage formation. Performance evaluation of protection systems
for highway bridge decks: sealers, thin-bonded overlays, waterproof membranes,
and cathodic protection systems.

(4) Development of
sustainable construction materials for the earth and space construction. Applications of special additives in
concrete, such as carbon nanotubes, optical fibers to make translucent
concrete, forming agents for lightweight concrete, and phase change materials
for high insulation concrete. Develop
lunar construction materials.
Optimization of concrete mix designs.
Reutilization of various solid wastes in concrete such as fly ash, waste
glass, waste tires, and recycled concrete.

Since 1993, Dr. Xi has
participated more than 100 sponsored projects as PI or co-PI. The total funding is about $20 million
dollars as PI and co-PI. The following
are lists of some of the research projects.

__Ongoing projects__

1.
Federal Highway Administration and Colorado Department of Transportation
“Colorado Local Technical Assistance Program for the Roadway Infrastructure System”,
a long-term project from 1998 – present (PI).

2. Department of Energy/National Energy Technology Lab
“Nanoparticle Injection technology for Remediating Leaks of CO2 Storage
Formation”, 2015-2019 (PI).

3. Department of Energy/Nuclear Energy University Program
“Multiple Degradation Mechanisms in Reinforced Concrete Structures, Modeling
and Risk Analysis”, 2015-2019 (co-PI).

4. Nuclear Regulatory Commission “Radiation Effects on
Concrete Structures”, 2016-2020 (co-PI).

5. OPP “Environmental and Human Impacts of Nuclear War”,
2017-2020 (co-PI)

6.
Department of
Energy/Nuclear Energy University Program “Time-dependent THMC Properties and
Microstructural Evolution of Damage Rocks in Excavation Damage Zone”, 2018-2021
(co-PI).

__Completed projects (partial list as
PI or co-PI, listed chronologically)__

1. New Jersey (NJ) DOT “Chloride Permeability of Concrete
with Silica Fume and Other Admixtures”, 1996 – 1998 (PI: Y. Xi).

2. Ben Franklin Technology Center “Use of Recycled Glass
as Raw Material in the Manufacture of Portland Cement”, 1996 – 1998 (PI: Y.
Xi).

3.

4.
Air Force “Dynamic Performance Evaluation of Conventional and
Non-Conventional Concrete, 1997 – 1998 (PI: K. Willam; co-PI: Y. Xi).

5.
CDOT “Roadway Safety Training”, 1998 – 2008 (PI: Y. Xi).

6.
NSF “Accelerated Testing and Reliable Modeling of Concrete Durability under
Coupled Environmental and Mechanical Loadings”, sponsored by National Science
Foundation, 1998 – 2002 (PI: Y. Xi; co-PIs: K. Willam, and D.M. Frangopol).

7.
NSF “Research Equipment Grant: Upgrade of the materials testing system”,
1998 – 1999 (PI: Y. Xi; co-PIs: B. Shing, and K. Willam).

8.
Federal Aviation Administration (FAA) “Fiber Optic Sensor Monitoring and
Earthquake Analysis of TRACON Facility at Denver International Airport”, 1998 –
2001 (PI: S. Sture; co-PI: Y. Xi).

9.
CDOT “Evaluation of CDOT current and Potential Steel Corrosion Protection
Measures”, 2000 – 2002 (PI: Y. Xi).

10.
Lockheed Martin via. Colorado Advanced Materials Institute (CAMI):
“Evaluation of High-Temperature-Capable Fabric Materials”, 2000-2001 (PI: Y.
Xi).

11. CTS Wireless “Frequency Shift of Piezoelectric
Devices”, 2000 – 2002 (PI: Y. Xi).

12.
CDOT “Evaluation of Fiber Reinforced Polymer Reinforced Bridge Decks”,
2000 – 2001 (PI: B. Shing; co-PIs: D.M. Frangopol, and Y. Xi).

13.
CDOT “Field Investigation of Cracking in Newly Constructed Bridge Decks”,
2000 – 2002 (PI: Y. Xi).

14.
NSF “NATO-NSF Workshop on Model-Based Simulation of Durability of
Materials and Structures”, 2000 – 2002 (PI: Y. Xi).

15.
CDOT “Comparative Study on
Corrosiveness of Different De-Icing Agents: Magnesium Chloride, Sodium Chloride,
and Caliber M1000", 2001 – 2002 (PI:
Y. Xi).

16.
NSF “A Live-Data
Simulation System and Applications to Highway Bridge Performance Prediction”, 2001 – 2005 (PI: X.C. Cai; co-PI: Y.
Xi).

17.
CDOT “Structural Testing and Monitoring by Fiber Optic Sensors of FRP Pedestrian Bridge in Denver O'Fallon Park”, 2002 – 2003 (PI: B. Shing; co-PIs: D.M.
Frangopol, Y. Xi).

18. Colorado Commission on Higher Education (CCHE) “High
Toughness Rubber-Modified Concrete”, 2002 – 2003 (PI: Y. Xi).

19.
CDOT “Materials, Testing Methods, and Construction Practices for Fast
Concrete Desk Repair”, 2003 (PI: Y. Xi).

20.
CDOT “Repair of Corrosion Damage and Wireless Monitoring of Corrosion
Potential of Castlewood Canyon Arch Bridge in Denver”, 2003 – 2004 (PI: B. Shing;
co-PIs: D.M. Frangopol, and Y. Xi).

21.
NSF “Workshop on Interface Problems”, 2004 (PI: K. Willam; co-PI: Y. Xi).

22. Sandia National Laboratory (SNL): “Structural Integrity of
Reinforced Concrete Building Complexes Subjected to High Temperature”, 2004 – 2005
(PI: K. Willam; co-PI: Y. Xi).

23. FHWA “Quantify Construction
Delays Due to Weather” 2004 – 2007 (PI:
Y. Xi; co-PIs: R. Balaji and K. Molenaar).

24.
CDOT “Evaluate Performance of CDOT’s Systems for Protection of Colorado’s
Reinforced Concrete Bridge Decks”, 2005 – 2007 (PI: G. Hearn; co-PI: Y. Xi).

25. Tokyo Electric Service Co. “Life Prediction in AAR
Affected Structures and Confined AAR Expansion Test, Phase I and Phase II”,
2007 – 2008 (PI: V. Saouma; co-PI: Y. Xi).

26.
National Science
Foundation (NSF) “High Temperature Effects
on Concrete Materials: A Multiscale Approach”, 2004 – 2008 (PI: K.
Willam; co-PI: Y. Xi).

27.
NASA “Refractory
Materials Evaluation for Corrosion Protection of the KSC Launch Pad Flame
Deflectors”, 2008 (PI: K. Willam; co-PI: Y. Xi).

28.
Obayashi Corp
“Background Survey and Evidential Research on Concrete Temperature Limits
Specified in ASME Codes”, 2009 (PI: K. Willam; co-PI: Y. Xi).

29.
Oak Ridge
National Laboratory (ORNL) “Thermal Response of Reinforced Concrete
Structures”, 2008-2009 (PI: K. Willam; co-PI: Y. Xi).

30.
Colorado Department of Transportation (CDOT) “Strategic Evaluation of Different Topical Protection
Systems for Bridge Decks and the Associated Life-Cycle Cost Analysis”,
2007-2009 (PI: Y. Xi).

31.
Performance
Improvement International (PII) “Unconventional Tests for a Nuclear Power Plant
Containment Vessel”, 2009-2010 (PI: V. Saouma; co-PIs: M. Eck, and Y. Xi).

32.
Colorado
Department of Public Health and Environment “Premixed Rubberized Insulation
Mortar (PRIM)”, 2008-2010 (PI: Y. Xi).

33.
National Science
Foundation “Penetration of Multi-Components De-icing Salts in Non-Saturated
Concrete Structures”, 2007 – 2010 (PI: Y. Xi; co-PI: L.Y. Li).

34.
Colorado Department of Transportation “Application of Roller Compacted Concrete (RCC) in Colorado’s Roadways”,
2009-2011 (PI: Y. Xi).

35.
Colorado Department of Transportation “Evaluation and Monitoring of
Performance of Bridge Deck Sealers”, 2008
to 2012 (PI: Y. Xi).

36.
Vestas Corp. “Panel Anchor Tests for Nacelle of Wind Turbine Towers”,
2012 (PI: Y. Xi).

37.
National Science
Foundation “An Integrated Power Aware Sensor-Simulation Network System for
Long-Term Performance Assessment of Concrete Infrastructures”, 2007 – 2013 (PI:
Cai, X.C., co-PIs: R. Zane, and Y. Xi).

38.
National Science Foundation
“Experimental Study and Theoretical Modeling of High Performance Recycled
Aggregate Concrete”, 2009 – 2013 (PI:
F. Vernerey; co-PI: Y. Xi).

39.
Oak Ridge
National Laboratory via University of Houston “Advanced Reactor Designs: Effect
of Irradiation on Concrete Materials and Structures”, 2011 – 2013 (PI: K.
Willam; co-PI: Y. Xi).

40.
Korea Railway
Research Institute “Durability Issues on Concrete Materials with Carbon Nano
Tubes (CNT)”, 2012-2013 (PI: Y. Xi).

41.
Colorado Department of Transportation “Evaluation of Thin Bonded Overlays as Cost Effective Bridge Deck
Barriers and Reducing Bridge Construction Costs”, 2012-2014 (PI: Y. Xi).

42.
Department of
Energy/Nuclear Energy University Program “Concrete Materials with Ultra-High
Damage Resistance and Self-Sensing Capacity for Extended Nuclear Fuel Storage
Systems”, 2012-2015 (PI: M. Li; co-PIs: K. Willam, K. Nakshatrala, and Y. Xi).

43.
Department of
Energy/Nuclear Energy University Program “Doubling the Life of Concrete Structures”, 2013-2016 (PI: B. Pesic, co-PIs: R.S. Khrishnan, G.
Song, and Y. Xi).

44.
Colorado Department of Transportation “Surface Chloride Level in Structural Concrete in Colorado”, 2013-2017
(PI: Y. Xi).

45.
Colorado Department of Transportation “Asphalt and Non-asphalt Waterproof Membranes”, 2013-2018 (PI: Y. Xi).

**Journal Articles (Peer-Reviewed)**

1.
Jing, Y., and Xi,
Y. (2019) “Long-term Neutron Radiation Levels in Distressed Concrete Biological
Shielding Walls”, *Journal of Hazardous Materials, *363,
376-384.* *

2.
Abdelrahman, M.,
and Xi, Y. (2018) “The Effect of w/c Ratio and Aggregate Volume Fraction on
Chloride Penetration in Nonsaturated Concrete”, *Construction and Building Materials*,
191, 260-269.

**3.
**Jiang,
Z., Xi, Y., Gu, X., Huang, Q., Zhang, W. (2018) “Modelling of
Water Vapour Sorption Hysteresis of Cementitious
Materials based on Pore Size Distribition”, *Cement and
Concrete Research*, 115, 8-19.

4.
Wang, Y., Damien,
D., and Xi, Y. (2018) “Micro- and meso-mechanical
modelling of effect of freezing on modulus of elasticity of concrete”, *Engineering Fracture Mechanics*, 200,
401-417.

5.
Lee, J.S., Sheesley, E., Jing, Y., Xi, Y., and Willam, K. (2018) “The
Effects of High Temperature on Bond Strength between Concrete and Rebars with
and without Epoxy Coating”, *Construction
and Building Materials*, 177, 230-236.

6.
Nemecek, J., Li,
L., and Xi, Y. (2017) “Electrokinetic Nanoparticle
Injection for Remediating1 Leaks in Oil Well Cement”, *Construction and Building Materials*, 156, 63-72.

7.
Kurtis, K., Xi,
Y., Glinicki, M., Provis,
J., Giannini, E., and Fu, T. (2017) “Can We Design Concrete to Survive Nuclear
Environments?” *Concrete International*,
Nov., 53-59.

8.
Wang, Y., and Xi,
Y. (2017) “The Effect of Temperature on Moisture Transport in Concrete”, *Materials*, 10, 926,
doi:10.3390/ma10080926.

9.
Xia, J., Xi, Y., and Jin, W. (2017) “Temperature Dependent Coefficient
of Thermal Expansion of Concrete in
Freezing Process”, *J. of Eng. Mech., *ASCE,
DOI: 10.1061/(ASCE)EM.1943-7889.0001256.

10.
Musiket, K., Vernerey,
F., and Xi, Y. (2017) “Numeral Modeling of Fracture Failure of Recycled
Aggregate Concrete Beams under High Loading Rates”, *International Journal of Fracture*, doi:10.1007/s10704-016-0145-3. Online published
2016.

11.
Jiang, Z., Xi, Y., Gu, X., Huang, Q., and Zhang, W.
(2017) “Mesoscopic Prediction of Cement Mortar Diffusivity by Analytical and
Numerical Methods”, *J. of Materials for
Civil Engineering, ASCE*, 29(4), DOI:
10.1061/(ASCE)MT.1943-5533.0001805.

**12. **Jing, Y., and Xi, Y. (2017) “Theoretical Modeling of
the Effects of Neutron Irradiation on Properties of Concrete”, *J. Eng. Mech.,* ASCE, 143(12): 04017137,
1-14**.**

13. Isteita, M.H., and Xi, Y. (2017) "The Effect of Thermal
Conduction on Chloride Penetration in Concrete", *Construction and Building Materials*, 156, 73–82.

14.
Na, O., Cai, X.C., and Xi, Y. (2017) “Corrosion Prediction with Parallel Finite Element
Modeling for Coupled Hygro-Chemo Transport into Concrete under Chloride-Rich
Environment”,
*Materials*, *10*(4),
350; doi:10.3390/ma10040350.

15.
Jiang, Z., Huang,
Q.H., Xi, Y., Gu, X.L., Zhang, W.P. (2016) “Experimental
Study of Diffusivity of Interfacial Transition Zone between Cement Paste and
Aggregate”, *J. of Materials for Civil Engineering,
ASCE*, 28(10): 04016109; DOI:
10.1061/(ASCE)MT.1943-5533.0001637.

16.
Homan, L., Ababneh, A., and Xi, Y. (2016) “The Effect of Moisture
Transport on Chloride Penetration in Concrete”, *Construction and Building Materials*, 125, 1189-1195.

17. Na, O., and Xi, Y. (2016) “Mechanical and Durability Properties of
Portland Cement Insulation Mortar with Rubber Powder from Waste Tires”, *Journal of Material Cycles and Waste
Management*, DOI 10.1007/s10163-016-0475-2.

18.
Na, O., Ou, E., Xi, Y., and Saouma, V. (2016) “The Effects of
Alkali-Silica Reaction on Mechanical Properties of Concrete with Three Different
Types of Reactive Aggregates”, *Structural
Concrete*, DOI: 10.1002/suco.201400062.

19.
Musiket, K.,
Rosendahl, M., and Xi, Y. (2016) “Fracture of Recycled Aggregate Concrete under
High Loading Rates”, *J. of Material in
Civil Eng., ASCE*, 10.1061/(ASCE)MT.1943-5533.0001513 , 04016018.

20.
Zhang, W.P.,
Tong, F., Gu, X.L., Xi, Y. (2015) “Study on Moisture Transport in Concrete in
Atmospheric Environment”, *Computers and
Concrete*, 16(5), 775-793.

21.
Zhang, W.P., Min,
H.G., Gu, X.L., Xi, Y., Xing. Y.S. (2015) “Mesoscale Model for Thermal
Conductivity of Concrete”, *Construction
and Building Materials*, 98, 8-16.

22.
Bai, Y., Harajli,
A., Xi, Y. (2015) “Analytical Solutions of Ionic Diffusion and
Heat Conduction In Multi-Layered Porous Media”, *Journal of
Applied Mathematics*, Vol. 2015, Article ID 208914, 11 pages, doi:10.1155/2015/208914.

23.
Damrongwiriyanupap,
N., Limkatanyu, S., and Xi, Y. (2015) "A Thermo-Hygro coupled
Model for Chloride Penetration in Concrete Structures", *Advances in Materials Science and
Engineering*, vol. 2015, Article ID 682940, 10 pages,
doi:10.1155/2015/682940.

24.
Damrongwiriyanupap,
N., Li, L., and Xi, Y. (2014) “Temperature
Effect on Multi-Ionic Species Diffusion in Saturated Concrete”, *Computers and Concrete*, 13(2), 149-171.

25. Nemecek, J.,
and Xi, Y. (2014) “Nanoparticle Injection into Concrete Using
Electromigration”, *Advanced Materials
Research, *Vol.
1054, 6-10*.*

26.
Wang, X., Rhee,
I., Wang, Y., and Xi, Y. (2014) "Compressive Strength, Chloride
Permeability, and Freeze-Thaw Resistance of MWNT Concretes under Different
Chemical Treatments", *The Scientific
World Journal*, Vol. 2014, Article ID 572102, 8 pages,
doi:10.1155/2014/572102.

27.
Eskandari-Ghadi,
M., Xi, Y., and Sture, S. (2014) “Cross-Property
Relations Between Mechanical and Transport Properties of Composite Materials”,
Technical note in *J. of
Engineering Mechanics. ASCE*, 140(7), 06014006.

28. Liang, Y., Ye, Z., Vernerey, F., and Xi, Y.
(2013). "Development of Processing Methods to Improve Strength of Concrete
with 100% Recycled Coarse Aggregate." *J. Mater. Civ. Eng.*, ASCE, 10.1061/(ASCE)MT.1943-5533.0000909
, 04014163.

29. Meshgin, P., and Xi, Y. (2013) “Multi-scale Composite Models
for Effective Thermal Conductivity of PCM-Concrete”, *Construction and Building Materials*, 48, 371-378.

30.
Eskandari-Ghadi,
M., Zhang, W.P., Xi, Y., and Sture, S. (2013) “Modelling of Moisture
Diffusivity of Concrete at Low Temperatures”, *J. of Engineering Mechanics, ASCE*, 139(7), 903-915.

31.
Kim, H.G., Lee, J.S., Cho, B.H., Kim, H.Y., and Xi,
Y. (2013) “An
Experimental Study on Fire Resistance of Medical Modular Block”, *International
Journal of Steel and Composite Structures*, 15(1), 103-130.

`32. `Damrongwiriyanupap, N., Li,
L.Y., and Xi, Y. (2013) “Coupled Diffusion of Multi-Component Chemicals in
Non-Saturated Concrete”, *Computers and Concrete*` , `11(3), 201-222

33.
Meshgin, P., Li, Y., and Xi, Y. (2012) “Utilization of Phase
Change Materials and Rubber Particles to Improve Thermal and Mechanical Properties
of Mortar”, *Construction & Building
Materials*, 28, 713-721.

34.
Meshgin, P., and Xi, Y. (2012) “The Effects of Phase Change
Materials on Properties of Concrete”, *ACI
Material J.*, 109(1), 71-80.

35.
Damrongwiriyanupap, N., Li, L.Y., and Xi, Y. (2011) “Coupled Diffusion of
Chloride and Other Ions in Saturated Concrete”, *Journal of Frontiers of Architecture and Civil
Engineering in China*`,`` `5(3), 267–277`.`

36.
Damrongwiriyanupap,
N., Liang, Y.C., Xi, Y. (2011)
“Diffusion of Multi-Ionic Species in Recycled Aggregate Concrete”, *Key
Engineering Materials, *477,* *56-64.

37. Li, L.Y., Damrongwiriyanupap,
N., and Xi, Y. (2011) “A Probabilistic Prediction Model for the Corrosion
Initiation Time of Steel Reinforcement in Concrete Structures”, *International Journal of Modelling,
Identification and Control*, 14(1/2), 112-120.

38.
Li, Y., Yan, Q.,
Xi, Y., and Meshgin, P. (2011) “Properties of
Premixed Rubberized Insulation Mortar”, *New
Building Materials*, 2, 43-45 (in Chinese).

39. Apipattanavis, S., Molenaar, K.R., Rajagopalan, B., Xi, Y., Sabol,
K.K., Blackard, B. Patil, S. (2010) “An Integrated
Framework for Quantifying and Predicting Weather Related Highway Construction
Delays, *Journal of Construction
Engineering and Management*, ASCE, Nov., 1160-1168.

40.
Lee, J.S., Xi,
Y., Willam, K., and Jung, Y. (2009)
“A Multiscale Model for Modulus of Elasticity of Concrete at High
Temperatures”, *Cement and Concrete
Research*, 39, 754–762.

41. Lee, J.S., Xi, Y., and Willam, K. (2008) “Properties
of Concrete after High Temperature Heating and Cooling”, *J. of Materials, ACI*, July-Aug. 105(4), 334-341.

42. Suwito, A., and Xi, Y. (2008) “The Effect of
Chloride-Induced Steel Corrosion on Service Life of Reinforced Concrete
Structures”, *Structure
& Infrastructure Engineering*, 4(3), June 2008, 177 – 192.

43. Koller, R., Chang, S.Y., and Xi, Y. (2007) “Fiber
Reinforced Polymer Bars under Freeze-Thaw Cycles and Different Loading Rates”, *Journal of Composite Materials*, 41(1),
5-25.

44.
Suwito, A., Ababneh, A., Xi, Y.,
and Willam, K. (2006) “The Coupling Effect of Drying Shrinkage and Moisture
Diffusion in Concrete”, *Computers &
Concrete*, 3(2-3), 103-122.

45. Suwito, Cai, X.-C., and Xi, Y. (2006) “Parallel Finite
Element Method for Coupled Chloride Penetration and Moisture Diffusion in
Concrete”, *International Journal of
Numerical Analysis and Modeling*, 3(4), 481-503.

46.
Xi, Y.,
Eskandari-Ghadi, M., Suwito, and Sture. S. (2006) “A
Damage Theory Based on Composite Mechanics”, *J. of Eng. Mech., ASCE*, 132(11), 1-10.

47.
Li, Y., and Xi,
Y. (2006) “Study on the Properties of Portland Cement Mortar and Concrete
Containing Crumb Rubber Aggregate”, *Concrete*,
200, 45-48 (in Chinese).

48.
Li, Y., Jin, C.,
and Xi, Y. (2006) “The Properties of Sulfur Rubber Concrete (SRC)”, *J. of Wuhan Univ. of Tech. (Mater. Sci. Ed.)*,
21(1), 129-133.

49. Chang, K.K., Roh, Y.S., and
Xi, Y. (2006) “A Fractal Fracture Model and Application to Concrete with Different
Aggregate Sizes and Loading Rates”, *Structural
Engineering and Mechanics*, 23(2), 147-161.

50.
Li, Y., Lee,
J.S., and Xi, Y. (2005) "Study on Sulfur Rubber Concrete", *J. of Building Materials*, 8(4), 368-372
(in Chinese).

51.
Xi, Y. and Nakhi, A. (2005) “Composite Damage Models for Diffusivity
of Distressed Materials”, *J. of Materials
in Civil Engineering*, ASCE, May/June, 17(3), 286-295.

52.
Willam, K., Rhee,
I., and Xi, Y. (2005) “Thermal Degradation in Heterogeneous Concrete
Materials”, *J. of Materials in Civil
Engineering*, ASCE, May/June, 17(3), 276-285.

53.
Asiz, A., Zhang, W., and Xi, Y. (2003) “Analysis of Aging
of Piezoelectric Crystal Resonators”, *IEEE
Transactions on Ultrasonic, Ferroelectric, and Frequency Control (IEEE-UFFC), *50(12)*,* 1647- 1655.

54.
Roh, Y.S., Asiz, A., Zhang,
W.P., and Xi, Y. (2003) “Experimental Study and Theoretical Prediction of Aging
Induced Frequency Shift of Crystal Resonators and Oscillators”, *Microelectronics
Reliability, *43(12),
1993-2000.

55.
Xie, Z.H., Wen,
X., and Xi, Y. (2003) “ASR Potentials
of Glass Aggregates in Water-Glass Activated Fly Ash and Portland Cement
Mortars”, *Journal of Materials in Civil Engineering*, ASCE, 15(1),
67-74.

56.
Ababneh, A., Farid Benboudjema, and Xi, Y. (2003) “Chloride
Penetration in Non-Saturated Concrete”, *J.
of Materials in Civil Engineering*, ASCE, 15(2), 183-191.

57.
Xie, Z.H., and
Xi, Y. (2002) “Use of Recycled Glass as a Raw Material in the Manufacture of
Portland Cement”, *Materials** and Structures*, RILEM, Sept. – Oct., 510-515.

58.
Ababneh, A., and Xi, Y. (2002) “An Experimental Study on the
Effect of Chloride Penetration on Moisture Diffusion in concrete”, *Materials and Structures*, RILEM,
35(254), 659-664.

59.
Kong, J., Ababneh, A., Frangopol, D.M., and Xi, Y. (2002)
“Reliability Analysis of Chloride Penetration in Saturated Concrete
”, *Probabilistic Engineering
Mechanics*, 17, 305-315.

60.
Suwito, A., Jin, W., Xi, Y., and Meyer, C. (2002) "A
Mathematical Model for the Pessimum Effect of ASR in
Concrete", *Concrete Science and Engineering*, RILEM, 4, 23-34.

61.
Xie, Z., and Xi,
Y. (2001) “Hardening Mechanisms of An Alkaline Activated Class-F Fly Ash”, *Cement and Concrete Research*, 31,
1245-1249.

62.
Amparano, F.E., Xi, Y., and Roh, Y.S.
(2000) “Experimental Study on the Effect of Aggregate Content on Fracture
Behavior of Concrete”, *Engineering
Fracture Mechanics*, 67, 65-84.

63.
Xi, Y., Willam,
K., and Frangopol, D. (2000) “Multiscale Modeling of Interactive Diffusion Processes
of Concrete”, *Journal of Engineering
Mechanics*, ASCE, 126(3), 258-265.

64.
Roh, Y.S., and Xi, Y. (2000) “A General Formulation for
Transition Probabilities of Markov Model and the Application to Fracture of
Composite Materials”, *Probabilistic
Engineering Mechanics,* 15(3), 241-250.

65.
Meyer, C.,^{ }and
Xi, Y. (1999) “Use of Recycled Glass and Fly Ash for Precast Concrete”, *Journal of Materials in Civil Engineering*,
ASCE, May, 11(2), 89-90.

66.
Xi, Y., and Bazant, Z.P. (1999) “Modeling Chloride Penetration in Saturated
Concrete”, *Journal of Materials in Civil
Engineering*, ASCE, 11(1), 58-65.

67.
Amparano, F.E., and Xi, Y. (1998) “Pumpability
of Nonsand Concrete with Anti-Segregative
Additives”, *ACI Materials Journal*,
95(6), 695-703.

68.
Tennis, P.,
Jennings, H.M., and Xi, Y. (1997) "Mathematical Modeling of Cement Paste
Microstructure by Mosaic Pattern, Part II - Application to Cement Paste", *Journal of Materials Research*, 12(7),
1741-1749.

69.
Xi, Y., and Bazant, Z.P. (1997) “Random Growth of Crack with R-curve:
Markov Process Model”, *Engineering
Fracture Mechanics*, 57(6), 593-608.

70.
Neubauer, C.M.,
Bergstrom, T.B., Sujata, K., Xi, Y., Garboczi, E.J., and Jennings, H.M. (1997)
“Drying Shrinkage of Cement Paste as Measured in an ESEM and Comparison with Microstructural
Models”, *Journal of Materials Science*,
32, 6415-6427.

71.
Xi, Y., and
Jennings, H.M. (1997) "Shrinkage of Cement Paste and Concrete Modeled by a
Multiscale Effective Homogeneous Theory", *Materials and Structures* (RILEM), 30, July, 329-339.

72.
Xi, Y. (1996)
"Analysis of Internal Structures of Composite Materials by Second Order
Property of Mosaic Patterns", *Materials
Characterization*, Jan., 11-25.

73.
Xi, Y. (1996)
"Representative Volumes of Composite Materials", *Journal of Engineering Mechanics*, ASCE, 122(12), 1159-1167.

74.
Xi, Y., Jennings,
H.M., and Tennis, P. (1996) "Mathematical Modeling of Cement Paste
Microstructure by Mosaic Pattern, Part I: Theory", *Journal of Materials Research*, 11(8), 1943-1952.

75.
Bazant, Z.P., and Xi, Y. (1995) "Continuous Retardation
Spectrum for Solidification Theory of Concrete Creep", *Journal of Engineering Mechanics*, ASCE , 121(2), 281-288.

76.
Xi, Y. (1995)
"A Model for Moisture Capacities of Composite Materials -
Formulation", *Computational
Materials Science*, 4, 65-77.

77.
Xi, Y. (1995)
"A Model for Moisture Capacities of Composite Materials - Application to
Concrete", *Computational Materials
Science*, 4, 78-92.

78.
Xi, Y., Bazant, Z.P., and Jennings, H.M. (1994) "Moisture
Diffusion in Cementitious Materials: Adsorption Isotherm", *Journal of Advanced Cement-Based Materials*,
1, 248-257.

79.
Xi, Y., Bazant, Z.P., and Jennings, H.M. (1994) "Moisture
Diffusion in Cementitious Materials: Moisture Capacity and Diffusivity", *Journal of Advanced Cement-Based Materials*,
1, 258-266.

80.
Bazant, Z.P., and Xi, Y. (1994) "Drying Creep of
Concrete: Constitutive Model and New Experiments Separating its
Mechanisms", *Materials and
Structures* (RILEM), 27, 3-14.

81.
Xi, Y.,
Bergstrom, T.B., and Jennings, H.M. (1994) "Image Intensity Matching
Technique: Application to the Environmental Scanning Electron Microscope",
*Computational Materials Science*, 2,
249-260.

82.
Bazant, Z.P., Xi, Y., and Baweja,
S. (1993) "Improved Prediction Model for Time Dependent Deformation of
Concrete, Part VII:
Short Form of BP-KX Model, Statistics and Extrapolation of Short-Time
Data", *Materials and Construction*,
(RILEM), 26, 567-574.

83.
Bazant, Z.P., and Xi, Y. (1993) "Stochastic Drying and
Creep Effects in Concrete Structures", *Journal
of Structural Engineering*, ASCE, 119(1), 301-322.

84.
Bazant, Z.P., Panula, L., Kim,
J.K., and Xi, Y. (1992) "Improved Prediction Model for Time-Dependent
Deformation of Concrete, Part VI: Simplified Code-Type Formulation", *Materials and Construction*, (RILEM), 25,
219-223.

85.
Bazant, Z.P., Xi, Y., and Reid, S.G. (1991) "Statistical
Size Effect in Quasibrittle Structures: I. Is Weibull
Theory Applicable ?", *Journal of Engineering Mechanics*, ASCE, 117(11), 2609-2622.

86.
Bazant, Z.P., and Xi, Y. (1991) "Statistical Size
Effect in Quasibrittle Structures: II. Nonlocal
Theory", *Journal of Engineering
Mechanics*, ASCE, 117(11), 2623-2640.

87.
Xi, Y., and Bazant, Z.P. (1989) "Sampling Analysis of Concrete
Structures for Creep and Shrinkage with Correlated Random Material
Parameters", *Probabilistic
Engineering Mechanics*, 4(4), 174-186.

**Book and Book Chapter**

1. Li, Z.J., Leung, C., and Xi, Y. (2009) __Structural
Renovation in Concrete__, Taylor & Francis, London, 356p.

2. Willam,
K., Xi, Y., and Naus, D. (2013) “Concrete under High
Temperature”, Chapter 26 of *Infrastructure
systems for Nuclear Energy*, Editors: Thomas T. C. Hsu, Jui-Liang
Lin, and Chiun-lin Wu, Publisher: Wiley.

**Refereed Conference Papers**

2. Xi, Y., and Willam, K., (2012) "Nuclear Radiation
Effects on Properties of Concrete", Proc. of 2012 Joint Conference of the
Engineering Mechanics Institute and the 11th ASCE Joint Specialty Conference on
Probabilistic Mechanics and Structural Reliability June 17-20 2012, Notre Dame,
IN.

3. Damrongwiriyanupap, N., Liang, Y.C., and Xi, Y. (2012)
"Multiscale Modeling of Multi-Ionic Transport Process in Recycled
Aggregate Concrete", Proc. of 2012 Joint Conference of the Engineering
Mechanics Institute and the 11th ASCE Joint Specialty Conference on
Probabilistic Mechanics and Structural Reliability June 17-20, 2012, Notre
Dame, IN.

4. Vernerey, F., and Xi, Y.
(2011) “An XFEM-level set method for the mechanics of interfaces in nano-composites”, Proc. of NSF CMMI Conference
(available in CD), held in Atlanta, Georgia, Jan. 4, 2011.

5. Willam, K., and Xi, Y. (2010) “Hygro-Thermal Spalling
of Concrete”, Research Group Profile, Engineering Mechanics Institute, ASCE.

6. Xi, Y., Li, L.Y., and Damrongwiriyanupap, N. (2009)
“Chloride Penetration and Moisture Diffusion in Concrete Structures”, Proc. of
NSF CMMI Conference (available in CD), held in Hawaii, June 22, 2009.

7. Willam, K., Lee, K.K., Xi, Y.,
and Lee, J.S. (2008) "Spalling of Concrete due to Combined Heating and
Drying”, *Creep, Shrinkage and Durability
of Concrete and Concrete Structures*, Proc. of CONCREEP8, Tanabe Tada-aki et al. Eds, 2, 1013-1019, CRC Press.

8. Lee, J.S., Xi, Y., and Willam,
K. (2008) “Coupling Effect between Temperature and Moisture on the Deformation
of Concrete”, *Creep, Shrinkage and Durability of Concrete and Concrete Structures*,
Proc. of CONCREEP8, Tanabe Tada-aki et al. Eds, 2,
257 – 260, CRC Press.

9. Y. Xi, A. Ababneh, L. Arrar, Suwito, and X.-C. Cai (2007) “Experimental Studies and Parallel Computing on Coupled Moisture and
Chloride Diffusion in Concrete”, *Transport
Properties and Concrete Quality – Material Science of Concrete,* Special
volume, Barzin Mobasher and
Jan Skalny, Editors, Proc. of the Transport
Properties and Concrete Quality Workshop, held in Arizona State University,
Tempe, AZ., The American Ceramic Society, 41-56.

10. Edward, E., Xi, Y., and Corotis, R. (2007) "The
Effect of Rice Husk Ash on Mechanical Properties of Concrete under High
Temperatures", *Proc. of 18th Engrg. Mech. Conf*., held in Blacksburg, Virginia.

11. Ou, E., Xi, Y., and
Corotis, R.(2007) "Sustainable Infrastructure Development of Guizhou
Province in Southwest China: A Life Cycle Assessment of Approach", Int.
Conf. on the Applications of Probability and Statistics in Civil Engineering, *ICASP10*, Tokyo, Japan, July 2007.

12. Lee, J., Xi, Y., and Willam, K. (2007) "Strength
and Stiffness of Concrete under Heating and Cooling Treatments", *Proc. of FraMCos6*, A. Carpinteri, P. Gambarova, G.
Ferro, and G. Plizarri, Editors, Vol. 2, 1709-1714.

13. Ababneh, A.N., and Xi,
Y. (2006) "Evaluation of Environmental Degradation of Concrete in Cold
Regions", Proc. of 2006 Cold Regions Conference, 10-pages, Conf. CD.

14. Willam, K., Basche, H., Lee,
K. and Xi, Y. (2006) "Assessment of RC Bond under Severe
Temperatures", Proc. Euro-C 2006, March 27-30, 2006, Mayrhofen
Tyrol Austria, Computational Modelling of Concrete Structures, G. Meschke, R. de Borst, H. Mang,
and N. Bicanic (eds.), Taylor \& Francis Group,
London, 647-656.

15. Willam, K., Lee, K., Lee, J. and Xi, Y. (2006)
"Issues of Thermal Collapse Analysis of RCS", Structures Congress of
ASCE, May 18-20, 2006, St. Louis MI, 10-page electronic paper, Conf. CD.

16. Willam, K., Lee, K., and Xi, Y. (2005) “Issues of
Reinforced Concrete Structures under Extreme Temperature Events”, Proceedings
of the 5 International Conference on Computation of Shell and Spatial
Structures, E. Ramm, W. A. Wall, K.-U. Bletzinger, M.
Bischo (eds.), June 1-4, 2005, Salzburg, Austria,
239-242.

17.
Ababneh, A., Sheban, M., Suwito, A., and Y. Xi
(2005) “The Coupling Effect of Drying Shrinkage and Moisture Diffusion in
Concrete”, Proc. of Concreep 7, Sept. 12, Nantes,
France.

18.
Willam, K., Basche, H.D., and Xi, Y. (2005) “Constitutive aspects of
high temperature material models”,*
fib-Workshop, Task Group 4.3.2, Fire Design of Concrete Structures*, Politecnico di Milano, Dec. 2-4, 2004, 121-129.

19.
Xi, Y., Li, Y.,
Xie, Z.H., and Lee, J.S. (2004) “Utilization of Solid Wastes (Waste Glass and
Rubber Particles) As Aggregates in Concrete”, Proc. of International Workshop
on Sustainable Development and Concrete
Technology, May 20-21, Beijing, China, 45-54.

20.
Suwito, A., and Xi, Y. (2004) “Service Life of Reinforced
Concrete Structures with Corrosion Damage due to Chloride Attack”, *Life-Cycle Performance of Deteriorating
Structures: Assessment, Design and Management,* Special Publication of ASCE,
Eds., D.M. Frangopol, E. Bruhwiler, M.H. Faber, and
B. Adey, 207-218.

21.
Eskandari-Ghadi,
M., Xi, Y., and Sture, S. (2004) “Composite Damage Mechanics And Applications
to Modeling of Degradation of Concrete”, *Fracture
Mechanics of Concrete Structures, Proc. of FRAMCOS-5*, V.C. Li, C.K.Y.
Leung, K.J. Willam, and S.L. Billington, Editors,
April, 12, Vail, Colorado, 263-269.

22.
Eskandari-Ghadi,
M., Xi, Y., and Sture, S. (2004) “The effect of heat source on upper and lower bounds
of effective conductivity of anisotropic composites”, *Fracture Mechanics of Concrete Structures, Proc. of FRAMCOS-5*, V.C.
Li, C.K.Y. Leung, K.J. Willam, and S.L. Billington,
Editors, April, 12, Vail, Colorado, 507-512.

23.
Ababneh, A., and Xi, Y. (2003) “A New Testing Method for
Determining the Coupling Effect of Chloride Diffusion on Moisture Transfer in
Concrete”, Proc. of Advances in Cement and Concrete IX: Volume Changes, Crackign and Durability, August 10, Copper Mountain,
Colorado, 133-140.

24.
Willam, K., Rhee,
I, and Xi, Y. (2003) “Thermal Degradation in Heterogeneous Concrete Materials”,
Computational Modelling of Concrete Structures (Proc. of EURO-C 2003, St.
Johann im Pongau, Austria,
March 17-20, 2003), Editors: N. Bicanic, R. deBorst, H. Mang, and G. Meschke; A.A. Balkema Publishers,
Lisse, 569-579.

25.
Roh, Y.S., and Xi, Y. (2001) “The Fracture Surface
Roughness of Concrete with Different Aggregate Sizes and Loading Rates”, ACI
Special Publication, SP 201 - Fracture Mechanics for Concrete Materials:
Testing and Applications, 35-54.

26.
Xi, Y., Willam,
K., Frangopol, D.M., Ababneh, A., Nakhi,
A., Kong, J.S., and Nogueira, C.L. (2001) “Accelerated Testing and Modeling of
Concrete Durability under Coupled Environmental and Mechanical Loadings”, *Long
Term Durability of Structural Materials*, Proc. of The NSF Durability
Workshop at University of California at Berkeley, Oct., Editors, P.J.M.
Monteiro, K.P. chong, J. Larsen-Basse, and K. Komvopoulos,
45-56.

27.
Ababneh, A., Xi, Y., and Willam, K. (2001) “Multiscale
Modeling of the Coupled Moisture Diffusion and Drying Shrinkage of Concrete”,
The Proc. of Concreep-6, MIT, in *Creep, Shrinkage and Durability Mechanics
of Concrete and Other Quasi-Brittle Materials*, Eds. F.-J. Ulm, Z.P. Bazant, and F.H. Wittmann, Elsevier
Science Ltd., 159-164.

28.
Kong, J.S., Akgul, F., Frangopol, D.M., and Xi, Y. (2001)
“Probabilistic Models for Predicting the Failure Time of Deteriorating
Structural Systems”, Computational Fluid and Solid Mechanics, Proc. of the 1^{st}
MIT Conf. on Computational Fluid and Solid Mechanics, Editor, K.J. Bathe, July
12-15, Elsevier, Amsterdam, 290-293.

29.
Nakhi, A., Xie, Z.H., Asiz, A., Ababneh, A., and Xi. Y. (2000) “Experimental Study on
Chloride Penetration under Coupled Hygromechnical
Loadings”, *Special Publication of ASCE*
“Condition Monitoring of Materials and Structures”, F. Ansari, Editor, 84-94.

30.
Ababneh, A., Suwito, A., Xi, Y.,
and Abu-Hejleh, N. (2000) “A Comparative Study on
Durability of Type IP and Silica Fume Concretes”, *High Performance Concrete – Workability, Strength and Durability*,
Proc. of the Int. Sym., Editors, Leung, C., Li, Z., and Ding, J.T., Dec., Hong
Kong, 273-279.

31.
Xi, Y., and Ababneh, A. (2000) “Prediction of the Onset of Steel
Corrosion in Concrete by Multiscale Chloride Diffusion”, *High Performance Concrete – Workability, Strength and Durability*,
Proc. of the Int. Sym., Editors, Leugn, C., Li, Z.,
and Ding, J.T., Dec., Hong Kong, 181-186.

32.
Gharaibeh, E.S., Hanai, T., Xi, Y.,
and Frangopol, D.M. (2000) “Effects of
Uncertainties on Chloride Penetration in Saturated Concrete”, Proc. of Probablistic Mechanics Conference 2000 (PMC2000), July,
Notre Dame, 241-244.

33.
Jin, W., Suwito, A., Meyer, C., and Xi, Y. (1998) "Theoretical
Modeling on Expansion and Damage due to Alkali-Silica Reaction", Proceedings
of 12th Engineering Mechanics Conference: *Engineering
Mechanics: A Force for the 21st Century*, May 18-20, San Diego, CA.,
1175-1178.

34.
Roh, Y.S., and Xi, Y. (1998) " A New Formulation of
Markov chain model and Application to Fracture Analysis ", Proceedings of
12th Engineering Mechanics Conference: *Engineering
Mechanics: A Force for the 21st Century*, May 18-20, San Diego, CA.,
1497-1500.

35.
Xi, Y., Roh, Y.S., and Summers, J. (1998) "Non-destructive
Testing for Fatigue Life of SMAs", Proceedings of 12th Engineering
Mechanics Conference: *Engineering
Mechanics: A Force for the 21st Century*, May 18-20, San Diego, CA.,
1074-1077.

36.
Xi, Y. (1998)
"Relationship among Grain Size, Fracture Process Zone and Size Effect of
Concrete", *Computational Modeling of
Concrete Structures, Proceedings of EURO-C*, March 31 - April 3, Badgastein, Austria, Editors, R. de Borst, N. Bicanic, H. Mang, and C. Meschke, Published by A.A. Balkema,
Rotterdam, the Netherlands, 275-283.

37.
Xi, Y. (1998)
" Minimum Size of Concrete Specimens for Linear Elastic Fracture
Analysis", Fracture Mechanics of Concrete Structures, Vol. 3, *Proceedings of FRAMCOS-3*, Oct. 12-16,
Gifu, Japan, Editors, H. Mihashi and K. Rokugo, Aedificatio Publishers, Immentalstr, Germany, 2021-2030.

38.
Xi, Y., Suwito, A., Wen, X., Meyer, C., and Jin, W. (1998)
"Testing and Modeling Alkali-Silica Reaction and the Associated Expansion
of Concrete", Mechanics of Quasi-Brittle Materials and Structures, *Proceedings of Int. Workshop in honor of
Prof. Z.P. Bazant 60 birthday*, March 27-28,
Prague, Czech Republic, Hermes Science Publications, Paris, 217-232.

39.
Xi, Y. (1998)
"Discussion on ‘Durability Mechanics II’, Mechanics of Quasi-Brittle
Materials and Structures, *Proceedings of
Int. Workshop in honor of Prof. Z.P. Bazant 60
birthday*, March 27-28, Prague, Czech Republic, Hermes Science Publications,
Paris, 435-440.

40.
Silverstrim, T., Rostami, H., Xi, Y., and Martin, J. (1997)
"High Performance Characteristics of Chemically Activated Fly Ash
(CAFA)", *Proceedings of the PCI/FHWA
Int. Sym. On High Performance Concrete*, New Orleans, Louisiana, Oct. 20-22,
135-147.

41.
Xi, Y. (1997)
"Mathematical Modeling of Chloride Penetration in Concrete", in *Mechanisms of Chemical Degradation of
Cement-Based Materials*, Edited by K.L. Scrivener and J.F. Young, E&FN
Spon, London, United Kingdom, 397-404.

42.
Xi, Y. (1996)
"Representative Volumes of Composite Materials", *Proc. of 11th Engineering Mechanics Specialty Conf. of ASCE*, May,
Fort Lauderdale, FL, 735-738.

43.
Xi, Y., and Amparano, F.E. (1996) "Effect of Aggregates on
Fracture Process Zone of Concrete", *Proc.
of 11th Engineering Mechanics Specialty Conf. of ASCE*, May, Fort
Lauderdale, FL, 1185-1188.

44.
Jennings, H.M.,
Xi, Y., Bazant, Z.P., and Yang, M. (1996)
"Constitutive Characterization of Cementitious Materials based on
Microstructural Models", *Proc. of
NATO/RILEM workshop on the Modeling of Microstructure and its Potential for
Studying Transport Properties and Durability*, St. Remy-les-Chevreuse, France, July 10-13, 1994, 187-226.

45.
Xi, Y., and Bazant, Z.P. (1996) "Analysis Crack Propagation in
Concrete Structures by Markov Chain Model and R-curve Method*", Proc. of ASCE Specialty Conf. on
Probabilistic Mechanics and Structural Reliability*, Worcester, MA., Aug.,
358-361.

46.
Sujata, K., Xi,
Y., and Jennings, H.M. (1996) "Interfacial Shrinkage in Mortars", in
Materials for the New Millennium, *Proc.
of 4th Materials Engineering Conference*, Nov. 10-14, Washington, D.C.,
1669-1676.

47.
Xi, Y. (1995)
"Characterization of Moisture Diffusion in Concrete Based on
Microstructural and Composite Models", *Proc.
of 10th Engineering Mechanics Specialty Conf. of ASCE*, May, Boulder,
Colorado, 1163-1166.

48.
Bazant, Z.P., Xi, Y., and Baweja,
S. (1995) "Solidafication Theory and Mechanisms
of Aging Creep of Concrete", *Proc.
of 10th Engineering Mechanics Specialty Conf. of ASCE*, May, Boulder,
Colorado, 1372-1375.

49.
Cheyrezy, M., and Xi, Y. et al. (1995) "Specific
Production Manufacturing Issues" Chapter 2 in *Proc. of 2nd Int. Workshop on High Performance Fiber Reinforced Cement
Composite*, June, Ann Arbor, Michigan, 25-42.

50.
Xi, Y. (1995)
"Representative Volume of Cementitious Materials", *Proc. of 2nd Int. Conf. on Fracture
Mechanics of Concrete and Concrete Structures*, July, Zurich, Switzerland,
635-644.

51.
Xi, Y. (1995)
"A Composite Model for Moisture Capacities of Concrete", *Proc. Of Int. Conf. on Concrete under Severe
Conditions - Environment and Loading*, August, Sapporo, Japan., 453-462.

52.
Li, Z., and Xi,
Y. (1995) “Application of Acoustic Emisson Technique
to Detection of Concrete Cracking and Rebar Corrosion”, Proc. of Int. Sym. On
Non-Destructive Testing in Civil Engineering (NDT-CE), Sept. 26-28, 613-620.

53.
Bazant, Z.P., and Xi, Y. (1994) "Fracture of Random Quasibrittle Materials: Markov Process and Weibull-Type
Models", *Proc. of ICOSSAR, 93',
Structural Safety & Reliability*, Schueller, Shinozuka, & Yao (eds), Balkema, Rotterdam, 1, 609-614.

54.
Xi, Y. (1994)
"Simulation of Multiphase Spatial Distributions with Application to
Fracture of Concrete", *Proc. of
Europe-U.S. Workshop on Fracture and Damage in Quasibrittle
Structures: Experiment, Modeling and Computer Analysis*, Prague, Sept., E
& FN SPON, 501-510.

55.
Bazant, Z.P., Xi, Y., and Baweja,
S. (1993) "Preliminary Guidelines and Recommendation for Characterizing
Creep and Shrinkage in Structural Design Codes", Creep and Shrinkage of
Concrete, *Proc. of the 5th Int. Symp. on Creep and Shrinkage of Concrete*, Barcelona,
Spain, Sept., 805-829.

56.
Xi, Y., and Bazant, Z.P. (1993) "Continuous Retardation Spectrum
for Solidification Theory of Concrete Creep", Creep and Shrinkage of
Concrete, *Proc. of the 5th Int. Symp. on Creep and Shrinkage of Concrete*, Barcelona,
Spain, Sept., 225-230.

57.
Xi, Y., and Bazant, Z.P. (1993) "Improved Pore Water Diffusion
Model for Creep Analysis of Concrete Structures", Creep and Shrinkage of
Concrete, *Proc. of the 5th Int. Symp. on Creep and Shrinkage of Concrete*, Barcelona,
Spain, Sept. 169-174.

58.
Bazant, Z.P., and Xi, Y. (1993) "New Test Method to Separate
Microcracking from Drying Creep: Curvature Creep at Equal Bending Moments and
Various Axial Forces", Creep and Shrinkage of Concrete, *Proc. of the 5th Int. Symp.
on Creep and Shrinkage of Concrete*, Barcelona, Spain, Sept., 77-82.

59.
Jennings, H.M., and
Xi, Y. (1992) "Relationships Between Microstructure and Creep and
Shrinkage of Cement Paste", *Material
Science of Concrete*, III, Ed. J. Skalny, The
Amer. Cer. Soc., Westerville, OH, 37-69.

60.
Jennings, H.M.,
and Xi, Y. (1992) "Cement-Aggregate Compatibility and Structure Property
Relationship Including Modeling", *Proc.
of the 9th Int. Congress on Chemistry of Cement*, New Delhi, India, Dec., 1,
663-691.

61.
Bazant, Z.P., and Xi, Y. (1992) "Size Effect in Quasibrittle Micro-heterogeneous Structures: Deterministic
and Statistical Theories", *Applications of Fracture Mechanics to
Reinforced Concrete*, Ed. A. Carpinteri, Elsevier
Applied Science, London, 1-16.

62.
Bazant, Z.P., and Xi, Y. (1990) "Combined Spectral and Sampling
Approach for Probabilistic Prediction of Creep and Shrinkage Effects in
Concrete Structures", *Materials
Research in Concrete*, Karlsruhe, May, 249-267.

**Project Reports**

1.
Xi, Y., Li, L.,
and Railsback, R. (2018) “Evaluation of Different Types of Waterproofing
Membranes (Asphaltic and Non-asphaltic) as Cost Effective Bridge Deck Barriers
in Reducing Corrosive Chloride Effects”, CDOT-2018-16, 73p.

2.
Xi, Y., Jing, Y.,
and Railsback, R. (2018) “Surface Chloride Levels in Colorado Structural
Concrete”, Colorado DOT Report No. CDOT-2018-05, 49p.

3.
Liang, Y.C., Gallaher, B., and Xi, Y. (2014) “Evaluation of Bridge Deck
Sealers”, Colorado DOT Report No.
CDOT-2014-6, 57p.

4. Willam, K., Xi,
Y., and Naus, D. (2013) “A Review of the Effects of
Radiation on Microstructure and Properties of Concrete Used in Nuclear Power
Plants”, NUREG/CR-7171, Office of Nuclear Regulatory Research, U.S. Nuclear
Regulatory Commission, and ORNL/TM-2013/263, 131p.

5. Damrongwiriyanupap, N., Liang, Y.C., and Xi, Y. (2012) Application of
Roller Compacted Concrete (RCC) in Colorado’s Roadways, Colorado DOT Report No.
CDOT-2012-11, 60p.

6. Xi, Y., Meshgin, P., Na, O., and Li, Y. (2010) “Premixed Rubberized
Insulation Mortar”, A Technical Report to CDPHE, 66p., http://www.cdphe.state.co.us/oeis/p2_program/atgfinalrpts.html.

7. Liang, Y.C., Zhang, W.P., and Xi, Y. (2010) “Strategic Evaluation of Different Topical Protection Systems for Bridge Decks
and the Associated Life-Cycle Cost Analysis”, Colorado DOT Report No. CDOT-2010-6,
61p.

8.
Willam, K., Xi, Y., Lee, K., and Kim, B. (2009)
“Thermal Response of Reinforced Concrete Structures in Nuclear Power Plants”,
University of Colorado at Boulder, SESM Report No. 02-2009: Report to Oak Ridge
National Laboratory, 210p.

9. Xi, Y., Balaji,
R., and Molenaar, K. (2008) "Quantifying Construction Delays Due to
Weather", Research report FHWA-CFL/TD-07-001.

10. Hearn, G., and
Xi, Y. (2007) "Service Life and Cost Comparisons for Four Types of CDOT
Bridge Decks", Colorado DOT Report No. CDOT-2007-2, 118p.

11. Basche. H.D., Willam,
K., and Xi, Y. (2005) “Uncoupled Transient Thermo-Elastic Stress Analysis”,
Internal Report CU/SESM-2005/002, University of Colorado at Boulder.

12. Willam, K., Xi,
Y., Lee, K., and Lee, J.S. (2005) “Thermoelastoplastic
Damage Analysis of RCS Subjected to Fire Scenarios”, Report to Sandia National
Lab, University of Colorado at Boulder, 105p.

13. Fafach, D., Shing, B.,
Chang, S.Y., and Xi, Y. (2005) “Evaluation of the FRP-Retrofitted Arches in the
Castlewood Canyon Bridge”, Colorado DOT Report
No. CDOT-DTD-R-2005-01, 245p.

14. Xi, Y., Chang,
S.Y., Asiz, A., and Li, Y. (2004) “Long-Term
Durability of Fiber-Reinforced Polymer (FRPs) and in-situ Monitoring of FRP
Bridge Decks at O’Fallon Park Bridge”, Colorado DOT Report No. CDOT-DTD-R-2004-3, 60p.

15.
Xi,
Y., Abu-Hejleh, N., Asiz,
A., and Suwito (2004) “Performance Evaluation of
Various Corrosion Protection Systems of Bridges in Colorado”, Colorado DOT Report No. CDOT-DTD-R-2004-1, 141p.

16. Willam, K., Xi,
Y., Lee, K., Lee, J.S., and Basche, H.D. (2004)
“Literature Review of Concrete and Concrete Structures Subjected to High
Temperature”, Internal Report CU/SESM-2005/001 University of Colorado at
Boulder, and Report to Sandia National Lab, 98p.

17. Xi, Y., and Li,
Y. (2004) “Materials, Testing Methods,
and Construction Practices for Fast Concrete Deck Repair”, Internal
Report CU/SESM/XI-2004/001 University of Colorado at Boulder, and Report to
Colorado DOT, 95p.

18. Saouma, V., and
Xi, Y. (2004) “Literature Review of
Alkali Aggregate Reactions in Concrete
Dams”, Project report to Swiss Federal Office for Water and Geology FOWG, 78p.

19. Xi, Y., Shing,
B., Abu-Hejleh, N., Asiz,
A., Suwito, A., Xie, Z.H., Ababneh,
A. (2003) “Assessment of the Cracking Problem in Newly Constructed Bridge Decks
in Colorado”, Colorado DOT Report No. CDOT-DTD-R-2003-3, 136p.

20. Xi, Y., Li, Y.,
and Li, Z.J. (2003) “High Toughness of Rubber-Modified Concrete (RMC)”, Final
Report CU/SR-XI-2003/002 to The Colorado Commission of Higher Education, 63p.

21. Cusson, R., and Xi, Y.
(2003) “The Behavior of Fiber-Reinforced Polymer Reinforcement in Low
Temperature Environment Climates”, Colorado DOT Report No. CDOT -DTD-R-2003-4,
107p.

22.
Shing, B., and Xi, Y. (2003) Studies on the Use of
High Performance Concrete and FRP Reinforcement for the I-225/Parker Road
Bridge”, Colorado
DOT Report No. CDOT-DTD-R-2003-13, 86p.

23. Xi, Y., and Xie,
Z.H. (2002) “Corrosion Effects of Magnesium Chloride and Sodium Chloride on
Automobile Components”, Colorado DOT Report No. CDOT-DTD-R-2002-04, 91p.

24.
Zylstra,
R., Shing, B., and Xi, Y. (2001) “Evaluation of PRP Prestressed Panels/Slabs
for I-225/Parker Road Project”, Colorado DOT Report No. CDOT-DTD-R-2001-14,
149p.

25.
Xi,
Y., Shing, B., and Xie, Z.H. (2001) “Development
of Optimal Concrete Mix Designs for Bridge Decks”, Colorado DOT Report
No. CDOT-DTD-R-2001-11, 60p.

**Awards and Recognitions**

*Eckel Award 2018*.
Department of Civil, Environmental
and Architectural Engineering, University of Colorado at Boulder.

Recipient
of *2010 Faculty Fellowship* at
University of Colorado at Boulder.

*Research development award 2004***. **Department
of Civil, Environmental and Architectural Engineering, University of Colorado
at Boulder.

*Young Researcher’s award* for academic year 1998-1999. Department of Civil, Environmental and
Architectural Engineering, University of Colorado at Boulder.

**Professional Activities**

*Committee chairs and directors *

·
The administrator
of Colorado Local Technical Assistance Program (sponsored by the U.S. Federal
Highway Administration, Colorado Department of Transportation, and University
of Colorado at Boulder)

·
The vice chair of Experimental Analysis and Instrumentation (EA&I)
Committee, ASCE Engineering Mechanics Institute (EMI) (2012).

·
The chair of Experimental Analysis and Instrumentation (EA&I)
Committee, ASCE Engineering Mechanics Institute (EMI) (2013-2014).

·
The past chair of Experimental Analysis and Instrumentation (EA&I)
Committee, ASCE Engineering Mechanics Institute (EMI) (2015).

·
The chair of the
committee on Properties of Materials, ASCE
Engineering Mechanics Institute (EMI), 2003-2007.

*Services at University of Colorado at Boulder*

·
A member of First
Level Review Committee of College of Engineering (2012 – 2015).

·
The executive
committee member of Dept. of Civil, Environmental, and Architectual
Engineering representing Structural Engineering and Structural Mechanics (SESM)
Group (2005 – 2011).

·
The coordinator
of Structural Engineering and Structural Mechanics Group in 2002 and 2003.

·
A member of the
Curriculum Committee of CEAE in 1999 and 2000.

·
A member of the
Facility Committee of CEAE in 2001-2003, 2011, 2018, 2019.

·
The seminar
organizer of Structural Engineering and Structural Mechanics Group in 1999 and
2000.

·
A member of the
search committee for the Structural Engineering and Structural Mechanics Group,
2008, 2009, 2011, 2012, 2013.

*Associate editor, guest editor and editorial board
member of journals*

·
A member of
Editorial Board of international journal *Computers
& Concrete*.

·
A member of
Editorial Advisory Board of international journal *Magazine of Concrete Research* (June, 2013 – June, 2017).

·
An associate
editor and a member of Editorial Board of *Journal
of Sustainable Cement Based Materials.*

·
An associate
editor and a member of Editorial Board of *Journal
of Engineering Mechanics*, ASCE, 2003-2007.

·
A past member of International Scientific
Committee of FraMCoS.

·
A past member of
Advisory Board for International Association on Concrete Creep (IA-Concreep).

·
A member of
Editorial Advisory Committee of an international journal “*Concrete Science and Engineering”* (RILEM, the journal was discontinued).

·
A member of the
Internal Oversight Board for the NSF NEES center at CU (up to 2009).

·
An editor for the
special issue of Journal of Materials for Civil Engineering (ASCE), dedicated
to Model-Based Simulation on Durability of Materials and Structures (2005).

·
An editor for the
special issue of Journal of Engineering Mechanics (ASCE), dedicated to
durability mechanics (March 2000).

·
An editor for the
special issue of Journal of *Concrete
Science and Engineering* (RILEM), dedicated to durability mechanics (March
2002).

·
An editor of the
proceedings of 8^{th} Faculty Enhancement Workshop of ACBM, July 15-18,
2001, Boulder, Colorado.

* International Conferences and Workshops
organized*

·
A member of International Scientific Committee
of 10th International Symposium on Innovation & Utilization of
High-Performance Concrete, Sept. 16-18, 2014, Beijing, China.

·
A member of International
Scientific Committee of the 5th BIOT Conference on Poromechanics
(BIOT-5), July 10-12, 2013, Vienna, Austria.

·
A member of
scientific committee for The 8th International Symposium on Cement &
Concrete (ISCC2013), Nanjing, China.

·
A member of International Advisory Committee Member of 2011 World Congress on
Advances in Structural Engineering and Mechanics, Seoul, Korea, Sept. 2011.

·
A member of International Scientific Committee of FraMCoS-7, Korea, 2010.

·
A Scientific Committee Members of Computational Technologies
in Concrete Structures, held in Korea in 2009.

·
A Scientific Committee Members of 8th International Conference on Creep, Shrinkage and Durability of
Concrete and Concrete Structures, held in Sept. 2008 in Japan.

·
A local organizer of FraMCoS-5 (The 5^{th} Int. Conf. on Fracture
Mechanics of Concrete and Structures), April 12-15, 2004, Vail, Colorado.

·
An organizer of NSF Workshop on Interface Problems in Cement-Based
Materials, April 12-15, 2004, Vail, Colorado.

·
An organizer of FHWA and CDOT Symposium on Innovative Bridge Materials
and Construction, April 22-23, 2004, Denver, Colorado.

·
The organizer and
a co-chair of the NSF Workshop on Model-Based Simulation of Durability of
Materials and Structures, July 4-7, 2002, Prague.

·
A co-chair of the
ASTM Symposium of Electrochemical
Techniques to Determine Corrosion-Related Properties of Concrete and of Metals
in Concrete, Committees G01 (G01.14), C09 (C09.66), June 18, 2003, Denver,
Colorado.

·
The local
organizer of 8^{th} Faculty Enhancement Workshop of ACBM, July 15-18,
2001, Boulder, Colorado.

·
A member of the International
Scientific Committee of CONCREEP-6, 2001, MIT, Boston.

·
A member of the International
Scientific Committee of CONCREEP-7, 2005, Nantes, France.

*Member of NSF review panel, professional committees
and organizations*

·
A NSF review
panelist for career proposals, Spet. 2003; SBIR
proposals, March 2004; career proposals, Sept. 2004; BRIGE proposals, June
2013; career proposals, 2017.

·
A past member of
the committee on poromechanics, ASCE/Engineering
Mechanics Division.

·
A past member of
the committee on experimental analysis and instrumentation, ASCE/Engineering
Mechanics Division.

·
A past member of
the committee 446 (Fracture Mechanics), American Concrete Institute.

·
A past member of
the committee TC107 (Creep and Shrinkage), International Union of Testing and
Research Laboratories for Materials and Structures.

·
A past member of
the committee TC QFS (Size effect of quasibrittle
fracture), International Union of Testing and Research Laboratories for
Materials and Structures.

**Principal Dissertation/Thesis Advisor for Graduate Students**

**Graduate students obtained academic and research
positions after graduation (11)**

A.N. Ababneh,
Assistant Professor, Clarkson University, Potsdam, NY.

A. Asiz,
Assistant professor, University of New Brunswick, Canada.

J. Richards, Lecturer (Captain),
United States
Military Academy, West Point,
NY.

A. Nakhi,
Assistant Professor, Kuwait University, Safat,
Kuwait.

M. Ghadi,
Assistant Professor, University of Science and Tchnology
of Mazandaran, Iran.

Y.S. Roh,
Associate Professor, Dankook University, South Korea.

Suwito, Researcher, King Saudi University, Saudi Arabia.

Jaesung Lee, Assistant professor, Hannam
University, South Korea.

Nattapong Damrongwiriyanupap,
Assistant Professor, University of Phayao, Thailand.

Pania
Meshgin, Sandia National Laboratory, U.S.A.

Okpin Na, Senior Research Engineer, Hyundai Engineering & Construction
Co., Ltd., South Korea

**Ph.D. Students**

1. A. Samadi (1996, Drexel Univ.)

2. Clark, Daniel (1997, Drexel Univ., transferred
to another school)

3. Y.S. Roh (2000)

4. A.N. Ababneh (2002)

5. A. Asiz (2002)

6. A. Nakhi (2003)

7. M. Gahdi (2004, S.
Stein co-advisor)

8. A. Suwito (2005)

9. S.Y. Chang (2005, transferred to another
school)

10. J.S. Lee (2006)

11. E. Ou (2007, R.
Corotis co-advisor)

12. Nattapong Damrongwiriyanupap (2010)

13.
Pania Mashgin (2011)

14. Okpin Na (2011)

15.
Yu-Chang Liang (2012)

16. Wemphy Hanafi (2012, transferred to another school)

17. Hesham Abdualla (2014,
transferred to another school)

18.
Musiket Kamtornkiat (2014, F. Vernerey co-advisor)

19.
Ali Harajli (2016, D.M. Frangopol co-advisor)

20.
Jiang Zhilv (2014-2016, visiting Ph.D. student)

21.
Yuxiang Jing (2018)

22. Yao
Wang (2019)

23.
Mohamed Abdelrahman (2019)

24. Linfei Li (current)

25.
Mohammed Zainy (current)

**M.S. Students (M.S. Thesis or M.S. Report) **

1. F.E. Amparano (1995
at Drexel Univ.)

2. W. Xiang (1998 at Drexel Univ.).

3. A. Hakhi (1998)

4. W. Graziano (1999)

5. J.H. Kim (1999)

6. J.H. Shin (2000)

7. B. Black (2001)

8. Y.J. Cho (2002)

9. J.S. Lee (2002)

10. K. Chanvut (2002)

11. M.P. Blangy (2002)

12. Z.H. Xie (2002)

13. R. Cusson (2002)

14. K. Streeter (2002)

15. S. Holst (2003)

16. J. Richards (2004)

17. S.R. Deshpande (2004)

18. Bret Banwart (2004)

19. R. Sheehan (2005)

20. Lydia Abarr (2005)

21. J. Walbert (2005)

22. D. Doherty (2005)

23. Scott Hamel (2005)

24. P. Orendorff (2005)

25. Adnan Muzaffar
(2006)

26. M. Yamakawa (2008)

27. Haideh Shams Hakimi (2008)

28.
Dustin Virgilio (2009)

29. Moad H. Isteita (2009)

30. John Calvert (2010)

31. Hesham S.R. Abdualla (2010)

32. Brandon
Parker (2011)

33. Andrew Geister (2011)

34.
Courtney Shepard (2011)

35. Jack Thorpe
(2012)

36. Johan Bjorkquist (2012)

37. Lee Maggert (2012)

38.
Wayne Brown (2012)

39.
Xingang Wang (2013)

40.
Brandon Buder (2013)

41.
Mitchell Rosendahl (2013)

42.
Tate Fairbanks (2013)

43.
Benjamin Gallaher (2013)

45. Linfei Li (2014)

46. William Lam (2014)

47. Mohammed Zainy (2015)

48. Zach Banachowski (2016,
discontinued and to be completed)

49. Raj Mehta (2017)

50. Christopher C. Frishcosy
(2019)

51. Boning Wang (2019)

52. Viki Martinez (2019 spring, transferred to another
group at CU-Boulder)

53. Yichen Dong (current)

54. Joshua Anderson (current)

**Host sabbatical leave professors **

Z.J. Li (2002); L. Bennethum (2003-2004); A. Ababneh
(2010); Sungjin Jung (2010);
Seunghun Kim (2011); Inkyu Rhee (2012); Youngsook Roh (2012); Jiří Němeček (Fulbright
Scholar 2013); Jaesung Lee (2014); and Bangsub Lee (2014).

**Host exchange scholars**

J.N. Liu (Visiting scholar
1996); F. Alleau (Exchange student 1997); F. Benboudjema (Exchange student 1997); F. Cherqui
(Exchange student 1999); C. Gavard (Exchange student
1999); Aurelie Jean (Exchange student 2004); Stephane Milhaud (Exchange student
2005); Thomas DeLarrard (Exchange student 2005); and Ludovic Missemer (Exchange
student 2006); Deborah Sperling (NSF/REU, 2005); Augustin Parret-Freaud
(Exchange student 2006); Chao Su (Visiting scholar 2007-2008); Adrien Hilaire
(Exchange student 2009); Zhengmao Ye (Visiting
scholar 2009); Fei Li (Visiting scholar 2011); Yu Bai (Visiting scholar 2011); Guohua Li (Visiting scholar 2011); Jin Xia (postdoc 2012);
Helene Penvern (visiting scholar 2012); Wunchock Kroehong (visiting
scholar 2012); Zhuge Yan (visiting professor 2012); Fu Jun (visiting professor
2012); Li Jizhen (visiting professor 2013); Xu Jinxia (visiting professor
2013); Xu Peizhen (visiting professor 2013); Decret
Damien (visiting student 2015); Thomas Langlade (visiting student 2015); Shiping Yin (visiting professor 2015); Yaguang
Zhu (visiting professor 2015); Chunxia Xue (visiting
professor 2016); Hongqiang Chu (visiting professor
2016-2017); Jessica Lopez (2017); and Jinliang Liu
(visiting student, 2018).

**Research associates and professional research
assistants supervised**

Z.H.
Xie (1999); A. Asiz (2003); Y. Li (2003, 2010); Suwito (2005); J.S. Lee (2006); W.P. Zhang (2006); Kent
Polkinghorne (2012 to 2013); Lindsay Marshall (2004 to 2013); Cassandra Guild
(2013 to 2015); Jiří Němeček
(2016-2017); Sarah Wilson (2015-2018); A. Ababneh (2003, 2010, 2018); Chao Jiang (2017-2019);
Dawn BeMent (2018-present); Renee Railsback (2002 to
present); and Yuxiang Jing (2018-present).