**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

**
**

**Class
websites**

·
CVEN
3161 Mechanics of Materials I

·
CVEN
4161 Mechanics of Materials II

·
AREN
4317 Architectural Engineering Senior Design

·
CVEN 4899 Senior
Design – Civil Engineering

·
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 and dry casks. 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. Reutilization
of various solid wastes in concrete such as fly ash, waste glass, waste tires,
and recycled concrete. Applications of
special additives in concrete, such as carbon nanotubes, optical fibers,
forming agents, and phase change materials.
Optimization of concrete mix designs.

See Prof. Yunping Xi’s Research
Areas

Since 1993, Dr. Xi has
participated more than 100 sponsored projects as PI or co-PI. The total funding is about $19 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. Colorado Department of
Transportation “Asphalt and Non-asphalt Waterproof
Membranes”, 2013-2018 (PI).

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

4. Department of Energy/National Energy Technology Lab
“Nanoparticle Injection technology for Remediating Leaks of CO2 Storage
Formation”, 2015-2018 (PI).

5. Department of Energy/Nuclear Energy University Program
“Multiple Degradation Mechanisms in Reinforced Concrete Structures, Modeling
and Risk Analysis”, 2015-2018 (co-PI).

6. Nuclear Regulatory Commission “Radiation Effects on
Concrete Structures”, 2016-2018 (co-PI).

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

**Journal Articles (Peer-Reviewed)**

1.
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.

2.
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.

3.
Wang, Y., and Xi,
Y. (2017) “The Effect of Temperature on Moisture Transport in Concrete”, *Materials*, 10, 926, doi:10.3390/ma10080926.

4.
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.

5.
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.

6.
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.

**7. **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**.**

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

9.
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.

10. 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.

11. 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.

12. 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.

13. 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.

14. 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.

15. 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.

16. 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.

17. 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.

18. 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.

19. 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.

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

21. 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.

22. 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.

23. 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.

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

25. 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.

26. 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.

`27. `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

28. 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.

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

30. 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`.`

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

32. 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.

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

34. 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.

35. 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.

36. 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.

37. 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.

38. 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.

39. 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.

40. 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.

41. 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.

42. 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).

43. 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.

44. 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.

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

46. 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.

47. 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.

48. 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.

49. 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.

50. 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.

51. 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.

52. 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.

53. 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.

54. 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.

55. 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.

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

57. 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.

58. 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.

59. 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.

60. 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.

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

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

63. 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.

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

65. 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.

66. 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.

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

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

69. 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.

70. 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.

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

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

73. 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.

74. 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.

75. 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.

76. 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.

77. 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.

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

79. 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.

80. 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.

81. 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.

82. 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**

1.
Damrongwiriyanupap,
N., and Xi, Y. (2012) "A Chemo-Hygro-Thermal Coupled
Model for Multi-Ionic Species Diffusion in Marine Concrete Structures",
Proc. of 5th International Conference of Asian Concrete Federation (ACF), Oct.
24-26, 2012, Pattaya, Thailand.

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. 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.

2. 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.

3. 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.

4. 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.

5.
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.

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

7. 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.

8. 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.

9. 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.

10. 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.

11. 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.

12. 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.

13. 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.

14. 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.

15. 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.

16. 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.

17. 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.

18. 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.

19. 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.

20. 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.

21. 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.

22. 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**

2010 *Kwang-Hua Chair Professor* at Tongji University, China.

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.

*Faculty advisor for Drexel teams in American Concrete
Institute (ACI) beam competition*. In 1993, ** First prize** for the highest ultimate
load was awarded to the Drexel team. In
1994,

**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, and 2011.

·
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 member of Editorial Board of the Madridge Journal of Nanotechnology & Nanoscience (MJNN).

·
A member of
Editorial Advisory Board of *Journal of
Building Structures* (in Chinese).

·
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 member of International Scientific Committee of
FraMCoS.

·
A 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.

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

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

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

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

·
A 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.
Fatimah Ali (current)

22.
Yuxiang Jing (current)

23.
Yao Wang (current)

24. Linfei Li (current)

25.
Mohamed Abdelrahman (current)

26.
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)

44.
Yao Wang (2014)

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.
Shan Wo (current)

51.
Elizabeth Jefferson (current)

52.
Christopher C. Frishcosy (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); and Jessica Lopez (2017).

**Research associates and professional research
assistants supervised**

Z.H. Xie (1999); A. Asiz (2003); Y. Li (2003, 2010); A. Ababneh
(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); Chao Jiang (2017-2019);
Renee Railsback (2002 to present); and Sarah Wilson (2015-present).