Indrajit Ray

Indraujit Ray, Ph. D.


Purdue University Calumet

Mechanical Engineering Department

Powers 211K

2200 169th Street, Hammond, IN  46323-2094

Phone:  219-989-2901

To send email: 


  • PhD, Civil Engineering, 1995, Indian Institute of Technology, India
  • MS, Structural Engineering, Jadavpur University, India
  • BS (Honors), Civil Engineering, Jadavpur University, India



Research Interests

  • High-performance, sustainable/green construction materials for civil infrastructures
  • Accelerated ageing and durability studies of FRP-concrete composites
  • Intelligent and novel construction materials for resilient and sustainable structures
  • Green technology and design and synthesis of materials for infrastructures
  • FRP wrap technology for rehabilitation of deteriorated bridges and other civil infrastructures
  • Prototype and field implementation of structures with new materials



Representative Journal Publications 

  • Kar, A., Ray, I., Unnikrishnan, A., Davalos, J.F., (2013)  “Composite Modeling to Predict Shrinkage from C-S-H for Concretes Containing Supplementary Cementitious Materials”, Construction and Building Materials. (in press) 
  • Ray, I., Fan, D., Davalos, J.F., and Kar, A., (2013) “Durability Evaluations of Bridge deck High-performance Concrete”  International Journal of Structural Engineering (IJStruc.E), Vol. 4, Nos ½ 
  • Kar, A., Ray, I., Unnikrishnan, A., Davalos J.F., (2012) “Estimation of C-S-H and Calcium Hydroxide for Cement Pastes Containing Slag and Silica Fume.”Construction and Building Materials, Vol. 30, pp 505-515  
  • Ray, I., Gong, z., Davalos, J.F., and Kar, A., (2012) “Shrinkage and Cracking Studies of High-performance Concrete Bridge deck,”  Construction and Building Materials, Vol. 28, pp 244-254 
  • Davalos J. F., Chen Y., and  Ray, I., (2012) “Long-term Durability Prediction Model for GFRP Bars in Concrete Environment,” Journal of Composite Materials, Vol. 45, pp 1899-1914    
  • Kar, A.,  Ray, I., Unnikrishnan, A., Davalos J.F. , (2012) “Microanalysis and optimization-based estimation of C-S-H contents of cementitious systems containing fly ash and silica fume,” Cement and Concrete Composites, Vol. 34, pp 419-429 
  • Davalos, J.F., Chen, A., Ray, I., Levan, J. (2011) “A Comprehensive Study on Using Externally Bonded FRP Composites for the Rehabilitation of Reinforced Concrete T-beam Bridges,”  Journal of Infrastructure Systems, ASCE, doi: 10.1061/(ASCE) IS.1943-555X.0000070   
  • Ray, I., Parish, G., Davalos, J.F., and Chen, A. (2011) “Effect of Concrete Substrate Repair Methods for Beams Aged by Accelerated Corrosion and Strengthened with CFRP,” Journal of Aerospace Engineering, ASCE , Vol. 24, No. 2, pp 227-239 
  • Mahmoud, A.M., Ammar, H., Mukdadi, O.M., Ray,I., Imani, F.S., Chen, A., and Davalos, J. F. (2010) “Non-Destructive Ultrasonic Evaluation of CFRP-Concrete Specimens Subjected to Accelerated Aging Conditions,” NDE & T International,Vol.43, No. 7, pp 635-641 
  • Ray, I., Davalos, J. F., and Sun, Z.  (2010) “Design of Experiment and Statistical Analysis of Bond Strength Test of Bi-layer Concrete”, International Journal of Materials and Product Technology, Vol. 39, No.3/4, pp. 333-347   
  • Davalos, J. F., Kodakani, S., Ray, I., and Lin, C., (2008) “Fracture Evaluation for GFRP-Concrete Interfaces for Freeze-thaw and Wet-dry cycling,” Journal of Composite Materials, Vol.  42,  No. 14, pp 1439-1466  
  • Davalos, J. F., Chen, Y., and Ray, I., (2008) “Effect of FRP Bar Degradation on Interface Bond with High-Strength  Concrete”,Cement and Concrete Composites, Vol. 30, No. 8, pp 722-730 
  • Chen, Y., Davalos, J. F., Ray, I., and Kim, H. Y.,(2007)“Accelerated Aging Tests for Evaluations of Durability Performance of FRP Reinforcing Bars for Concrete Structures”, Composite Structures Journal, Vol. 78, No. 1, pp 101-111  
  • Chen, Y., Davalos, J. F., and Ray, I., (2006) “Durability Prediction for GFRP Reinforcing Bars Using Short-term Data of Accelerated  Aging Tests”, Journal of Composites for Construction, ASCE, Vol. 10, No. 4, pp 279-286 
  • Davalos, J. F., Kodkani, S., and Ray, I., (2006) “Fracture Mechanics Methods for Mode-I Interface Evaluations of FRP Bonded to Concrete Substrate”, Journal of Materials for Civil Engineering, ASCE, Vol. 18, No. 5, pp 732-742   
  • Ray, I., Julio F. Davalos, J. F., and Luo, S., (2005) “Interface Evaluations of Overlay Concrete Bi-layer Composites by a Direct Shear Test”, Cement and Concrete Composites, Vol. 27, pp 339-347 
  • Boyajian, D. M., Davalos, J. F., and Ray, I.,  (2005) “Appraisal of the Novel Single Contoured-cantilever Beam”, Journal Materials and Structures, RILEM, France, Vol. 38, pp 11-16




  • CEE Excellence in Teaching Award at WVU (2010, 2007, 2005, and 2004)
  • MHRD scholarship in Ph.D. program 



Major Professor (Advisor/co-advisor)

  • Ph.D./post-doc students=6
  • MS students=28
  • Advisory Committee members=23



Representative Research Projects     

  • Center for Transportation Security and Infrastructure Innovations-TranSI2, WV Higher Education Policy Commission/WV EPSCoR, July, 2007-June 2012,
  • Advanced Materials Program-Phase II – High-Performance Concrete (Task A), Deck Overlays (Task B), and Short-Span Steel Bridges (Task C), West Virginia Department of Transportation- Division of Highways (WVDOT-DOH), May 15, 2006 through October 31, 2011
  • Energy Efficient and Seismic/Blast Resistant Buildings with Concrete-Filled FRP Sandwich Wall Panels, July 1, 2010 to December 31, 2011
  • District 3-0 Investigation of Fiber-Wrap Technology for Bridge Repair and Rehabilitation (Phase III), PennDOT, USDOT, FHWA, January 15, 2008 through January 14, 2010
  • District 3-0 Investigation of Fiber Wrap Technology for Bridge Repair and Rehabilitation (Phase-II), PennDOT, USDOT, FHWA, March, 2006 through March 2007
  • District 3-0 Investigation of Fiber Wrap Technology for Bridge Repair and Rehabilitation (Phase –I), PennDOT, USDOT, FHWA ,  September , 2004 through September, 2005
  • Advanced Materials Program: High-Performance Concrete, Bridge Deck Overlays and High-Performance Steel , WVDOT-DOH, August 2002 through July 2005



Professional Affiliations

  • Member ACI,  Associate members of three committees
  • ASTM member including voting member of concrete and aggregate committees
  • Life member Institution of Engineers