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Refereed Archival Journal Publications (Names of supervised students are underlined)

 

1. Chatti, Karim and El Mohtar, Chadi S., "The Effect of Different Axle Configurations on the Fatigue Life of an Asphalt Concrete Mixture," Journal of the Transportation Research Record, No.1891, pp. 121-130, January 2004. [PDF]

2. El Mohtar, Chadi S. and Khire, Milind V., "Lab-Scale Vertical Pullout Test for Measurement of Soil-Geomembrane Interface Friction Parameters between Geomembranes and Cohesionless Soils," Geotechnical Testing Journal ASTM, Vol 32 Issue 4, July 2009. [PDF]

3. Erten, M., Gilbert, B., El Mohtar, C, and Reible, D. "Development of a laboratory procedure to evaluate the consolidation potential of soft contaminated sediments," ASTM Geotechnical Testing Journal: Innovations in Characterizing the Mechanical and Hydrological Properties of Unsaturated Soils, Vol 34 Issue 5, September 2011. [PDF]

4. El Mohtar, C. S. and Rugg, D. "New Three-Way Split Mold Design and Experimental Procedure for Testing Soft, Grouted Soils," ASTM Geotechnical Testing Journal, Vol 34 Issue 6, pp. 365-371, November 2011. [PDF]

5. Mustafa B. Erten, Danny D. Reible, Robert B. Gilbert, Chadi S. El Mohtar "The Performance of Organophilic Clay on NAPL Contaminated Sediments under Anisotropic Consolidation," Journal of ASTM International STP 1554, Vol. 5, Restoration of Aquatic Environment, Nov. 2012, DOI: 10.1520/STP104214. [PDF]

6. Yoon, J. and El Mohtar, C. S. "Disturbance effect on yield stress measurement of bentonite suspension," ASTM Geotechnical Testing Journal, Vol. 36, No.1, 2013 (January). [PDF]

7. El Mohtar, C. S., Drnevich, V. P., Santagata, M. C. and Bobet, A. "Combined Resonant Column and Cyclic Triaxial Tests for Measuring Undrained Shear Modulus Reduction of Sand with Plastic Fines" ASTM Geotechnical Testing Journal, Vol. 36, No. 4, 2013. [PDF]

8. C. S. El Mohtar, A. Bobet, M.C. Santagata, V.P. Drnevich, C. Johnston "Liquefaction Mitigation using Bentonite Suspensions" Journal of Geotechnical and Geoenvironmental Engineering, Vol. 139, No. 8, August 1, 2013. ASCE, p.p. 1369-1380. [PDF]

9. Yoon, J. and El Mohtar, C. S. "Groutability of granular soils using sodium pyrophosphate modified bentonite suspensions" Tunneling and Underground Space Technology, Vol. 37 p.p. 135-145, August, 2013. [PDF]

10. Yoon, J. and El Mohtar, C. S. "Dynamic rheological properties of sodium pyrophosphate modified bentonite suspensions for liquefaction mitigation" Clays and Clay Minerals, Volume 61, No. 4, 319-327, October, 2013. [PDF]

11. Yoon, J. and El Mohtar, C. S. "Evaluation of time-dependent yield stress using dynamic rheological property of bentonite suspensions" ASTM Geotechnical Testing Journal, Vol. 37, No. 1, 2014. [PDF]

12. El Mohtar, C. S., Drnevich, V. P., Santagata, M. C. and Bobet, A. "Pore pressure generation in Sand with Plastic Fines" Geotechnique. Volume 64, No. 2, pp. 108-117, 2014. [PDF]

13. Yoon, J. and El Mohtar, C. S. "Groutability of Granular Soils using Bentonite Grout based on Filtration Model" Transport in Porous Media. Volume 102, Issue 3 (2014), Page 365-385. [PDF]

14. Yoon, J. and El Mohtar, C. S. "Rheological properties of sodium pyrophosphate modified bentonite suspensions for seepage control" Engineering Geology, Volume 179, p.p. 32-40, Sept. 2014. [PDF]

15. Marika Santagata, Julia P. Clarke, Antonio Bobet, Vince P. Drnevich, Chadi S. El Mohtar, Pao-Tsung Huang and Cliff T. Johnston. "Rheology of concentrated bentonite suspensions treated with sodium pyrophosphate for application in mitigating earthquake induced liquefaction" Applied Clays Science, doi: 10.1016/j.clay.2014.05.017, In Press.

 

Refereed Conference Proceedings (back to top of page)

 

1. K. Chatti, H. Salama, and C. S. El Mohtar "Effect of Heavy Trucks with Large Axle Groups on Asphalt Pavement Damage" 8th International Symposium on Heavy Vehicle Weights and Dimensions, 14-18 March 2004, Gauteng Province, South Africa. [PDF]

2. K. Chatti, H. S. Lee, and C. S. El Mohtar "Fatigue Life Predictions for Asphalt Concrete Subjected to Multiple Axle Loadings" 8th International Symposium on Heavy Vehicle Weights and Dimensions, 14-18 March 2004, Gauteng Province, South Africa. [PDF]

3. El Mohtar, C., Clarke, C., Bobet, A., Santagata, M., Drnevich, V., and Johnston, C.. "Cyclic Response of Sand with Thixotropic Pore Fluid" ASCE Geotechnical Earthquake Engineering and Soil Dynamics Conference, Geotechnical Special Publication Vol. 181, May 2008. [PDF]

4. M. Abou Najm, C. El Mohtar, R. Mohtar and V.P. Drnevich, "Improving TDR Measurements through Accounting for Soil Structural Properties" ASABE Annual International Meeting, Rhode Island, July 2008. [PDF]

5. El Mohtar, C., Santagata, M., Bobet, A., Drnevich, V., and Johnston, C. "Effect of Plastic Fines on the Small Strain Stiffness of Sand" IS-Atlanta: Fourth International Symposium, Deformation Characteristics of Geomaterials, v.1, September 2008, p. 245-251. [PDF]

6. El Mohtar, C. "Evaluation of the 5% Double Amplitude Strain Criterion" International Conference on Soil Mechanics and Foundation Engineering, ISSMGE, Alexandria, Egypt October 2009. [PDF]

7. Andrew C. Brown, Trent Ellis, Greg Dellinger, Chadi El Mohtar, Jorge Zornberg, Robert B. Gilbert. "Long-Term Monitoring of a Drilled Shaft Retaining Wall in Expansive Clay: Behavior Before and During Excavation" Geofrontiers March 2011, Dallas, Tx. [PDF]

8. H. Hwang, J. Yoon, D. Rugg and C.S. El Mohtar. "Hydraulic Conductivity of Bentonite Grouted Sand" Geofrontiers March 2011, Dallas, Tx. [PDF]

9. D. A. Rugg, J. Yoon, H. Hwang, and C. S. El Mohtar. "Undrained Shearing Properties of Sand Permeated with a Bentonite Suspension for Static Liquefaction Mitigation" Geofrontiers March 2011, Dallas, Tx. [PDF]

10. J.S. Yoon and C.S. El Mohtar. "Time dependent rheological behavior of modified bentonite suspensions" GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering, Oakland, CA, March 25-29, 2012. [PDF]

11. Mustafa B. Erten, Chadi S. El Mohtar, Danny D. Reible, Robert B. Gilbert. "Consolidation Properties of NAPL Contaminated Sediments" GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering, Oakland, CA, March 25-29, 2012. [PDF]

12. W.S. Kwan and C.S. El Mohtar. "Comparison between Shear Strength of dry Sand Measured in CSS device using Wire-reinforced membranes and Stacked Rings" GeoCongress 2014: Geo-Characterization and Modeling for Sustainability, Atlanta, GA, Feb. 23-26, 2014. [PDF]

13. Kwan, W.S., Sideras, S., El Mohtar, C.S., and Kramer, S. "Pore Pressure Generation under Different Transient Loading Histories", Proceedings of the 10th U.S. National Conference on Earthquake Engineering, Frontiers of Earthquake Engineering, Anchorage, Alaska, July 21-25, 2014. [PDF]

 

Non-Refereed Conference Proceedings (back to top of page)

 

1. Julia P. Clarke, Antonio Bobet, Vincent P. Drnevich, Chadi El Mohtar, Cliff T. Johnston, Marika Santagata, "Sodium Pyrophosphate-bentonite suspensions for use in Liquefaction Mitigation" International clay conference, Castellaneta Marina (TA) - Italy. June 14-20, 2009.

2. Mustafa Erten, Mary Goff, Danny Reible, Bob Gilbert, and Chadi El-Mohtar. "Development of a laboratory test to evaluate NAPL mobility in sediments" Sixth International Conference on Remediation of Contaminated Sediments, New Orleans, February 2011.

3. Chadi S. El Mohtar, Vincent P. Drnevich, Marika Santagata and Antonio Bobet. "Combined Resonant Column and Cyclic Triaxial Tests for Measuring Shear Modulus of Sand with Plastic Fines" ASTM Symposium on Dynamic Testing of Soil and Rock: Field and Laboratory, San Diego, CA, June 28-29, 2012.

4. Mustafa B. Erten, Danny D. Reible, Chadi S. El Mohtar and Robert B. Gilbert. "The Behavior Organophilic Clay as an In Situ Cap on Nonaqueous Phase Liquid Contaminated Sediments" 7th International Conference on Remediation of Contaminated Sediments held in Dallas, February 4-7, 2013.

5. M. Khattab, J.S. Yoon and C.S. El Mohtar. "Prediction of Penetration Length of Bentonite Slurry in Soil-Bentonite Slurry walls" 7th International Conference on Remediation of Contaminated Sediments held in Dallas, February 4-7, 2013.

6. Betak, J. F., Bhasin, A. and El Mohtar, C.S. "The railroad Engineering Sustainability Lifecycle" 100th ASLRRA Annual Meeting, Atlanta, Georgia, April 28-30, 2013.

7. Spears, A., Yoon, J., Hwang, H. and El Mohtar, C.S. "Effects of Bentonite Hydration and Uniformity on Hydraulic Conductivity of Sand-Bentonite Mixtures", National Society of Black Engineers (NSBE) 40th Annual Conventions, Nashville, TN, March 26-30, 2014.

 

Other Major publications (back to top of page)

 

1. El Mohtar, Chadi S., "The Effect of Different Axle Configurations on the Fatigue Life of an Asphalt Concrete Mixture" MS Thesis presented to the Dept. of Civil & Environmental Engineering. Michigan State University. E. Lansing MI 48824, August 2003.

2. El Mohtar, Chadi S., "Pore Fluid Engineering: An Autoadaptive design for Liquefaction Mitigation" Ph.D. dissertation submitted to the Faculty of Purdue University, West Lafayette, IN 47907, May 2008.

3. Karim Chatti, Anshu Manik, Hassan Salama, Syed W. Haider, Nicholas Brake, and Chadi El Mohtar. "Effect of Michigan Multi-Axle Trucks on Pavement Distress Volume I - Literature Review and Analysis of In-Service Pavement Performance Data" February 2009, submitted to Michigan Department of Transportation as part of Project RC-1504.

4. Karim Chatti, Anshu Manik, Hassan Salama, Chadi El Mohtar, and Hyung Suk Lee. "Effect of Michigan Multi-Axle Trucks on Pavement Distress Volume II - Flexible Pavements" February 2009, submitted to Michigan Department of Transportation as part of Project RC-1504.

5. Karim Chatti, Anshu Manik, Hassan Salama, Chadi El Mohtar, and Hyung Suk Lee. "Effect of Michigan Multi-Axle Trucks on Pavement Distress Volume III - Rigid Pavements" February 2009, submitted to Michigan Department of Transportation as part of Project RC-1504.

6. El Mohtar, C. S. "The Geoengineering of Contaminated Sediments" invited article to ASCE GeoStrata, Nov-Dec, 2013 Issue.

7. Andrew Brown, Gregory Dellinger, Chadi El-Mohtar, Jorge Zornberg and Robert Gilbert. "The Long-Term Performance of a Drilled Shaft Retaining Wall in an Expansive Clay" October 2013, Center of Transportation Research, Technical Report 0-6603-2, submitted to TxDOT.

 

Invited/Conference Talks: (back to top of page)

 

1. K. Chatti and C. S. El Mohtar, "The Effect of Different Axle Configurations on the Fatigue Life of an Asphalt Concrete Mixture" The Transportation Research Board 83rd Annual Meeting, Washington, D.C. January 2004.

2. K. Chatti, C. S. El Mohtar, and H. Salama, "Effect of Heavy Trucks with Large Axle Groups on Asphalt Pavement Damage" 8th International Symposium on Heavy Vehicle Weights and Dimensions, 14-18 March 2004, Gauteng Province, South Africa.

3. K. Chatti, C. S. El Mohtar, and H. S. Lee, "Fatigue Life Predictions for Asphalt Concrete Subjected to Multiple Axle Loadings" 8th International Symposium on Heavy Vehicle Weights and Dimensions, 14-18 March 2004, Gauteng Province, South Africa.

4. El Mohtar, C. "Pore Fluid Engineering: An AutoAdaptive Design for Liquefaction Prevention" invited Speaker, American University of Beirut, March 2007.

5. El Mohtar, C. "Pore Fluid Engineering: An AutoAdaptive Design for Liquefaction Mitigation" invited Speaker, University of Texas at Austin, March 2008.

6. El Mohtar, C., Bobet, A., Santagata, M., Drnevich, V., and Johnston, C. "Cyclic Response of Sand with Thixotropic Pore Fluid" ASCE Geotechnical Earthquake Engineering and Soil Dynamics Conference, Sacramento, CA, May 2008.

7. M. Abou Najm, C. El Mohtar, R. Mohtar and V.P. Drnevich, "Improving TDR Measurements through Accounting for Soil Structural Properties" ASABE Annual International Meeting, Rohde Island, June 2008.

8. El Mohtar, C., Santagata, M., Bobet, A., Drnevich, V., and Johnston, C. "Effect of Plastic Fines on the Small Strain Stiffness of Sand" IS-Atlanta: Fourth International Symposium, Deformation Characteristics of Geomaterials, Atlanta, GA, September 2008.

9. Santagata, M., Clarke, J.,, Bobet, A., Drnevich, V.P., El Mohtar, C.S., Johnston, C.T. "Sodium pyrophosphate - bentonite suspensions for use in liquefaction mitigation" 46th Annual Meeting of the Clay Minerals Society, Billings, Montana, June 5-11, 2009.

10. Santagata, M., Clarke, J., Bobet, A., Drnevich, V.P., El Mohtar, C.S., Johnston, C.T. "Sodium pyrophosphate - bentonite suspensions for use in liquefaction mitigation" 14th International Clay Conference, Castellaneta Marina, Italy, June 18, 2009.

11. El Mohtar, C. "Top 10 Things a New Faculty Should Know" New Faculty Orientation, Cockrell School of Engineering, Austin, Tx, August 2009.

12. El Mohtar, C. "Top 10 Things a New Faculty Should Know" New Faculty Orientation, Cockrell School of Engineering, Austin, Tx, August 2010.

13. Andrew C. Brown, Trent Ellis, Greg Dellinger, Chadi El Mohtar, Jorge Zornberg, Robert B. Gilbert. "Long-Term Monitoring of a Drilled Shaft Retaining Wall in Expansive Clay: Behavior Before and During Excavation" Geofrontiers March 2011, Dallas, Tx.

14. H. Hwang, J. Yoon, D. Rugg and C. S. El Mohtar. "Hydraulic Conductivity of Bentonite Grouted Sand" Geofrontiers March 2011, Dallas, Tx.

15. D. A. Rugg, J. Yoon, H. Hwang, and C. S. El Mohtar. "Undrained Shearing Properties of Sand Permeated with a Bentonite Suspension for Static Liquefaction Mitigation" Geofrontiers March 2011, Dallas, Tx.

16. J.S. Yoon and C. S. El Mohtar. "Time dependent rheological behavior of modified bentonite suspensions" GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering, Oakland, CA, March 25-29, 2012.

17. Mustafa B. Erten, Chadi S. El Mohtar, Danny D. Reible, Robert B. Gilbert. "Consolidation Properties of NAPL Contaminated Sediments" GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering, Oakland, CA, March 25-29, 2012.

18. El Mohtar, C. "Geotechnical Research at the University of Texas" CAEE Undergraduate Advisory Board 1st research Forum, April 12, 2012.

19. Chadi S. El Mohtar, Vincent P. Drnevich, Marika Santagata and Antonio Bobet. "Combined Resonant Column and Cyclic Triaxial Tests for Measuring Shear Modulus of Sand with Plastic Fines" ASTM Symposium on Dynamic Testing of Soil and Rock: Field and Laboratory, San Diego, CA, June 28-29, 2012.

20. El Mohtar, Chadi, "Career in Academia: First-hand experience" Talk to the GioInstittue Graduate student chapter at Purdue University (Web-talk).

21. Mustafa B. Erten, Danny D. Reible, Chadi S. El Mohtar and Robert B. Gilbert. "The Behavior Organophilic Clay as an In Situ Cap on Nonaqueous Phase Liquid Contaminated Sediments" 7th International Conference on Remediation of Contaminated Sediments held in Dallas, February 4-7, 2013.

22. M. Khattab, J.S. Yoon and C.S. El Mohtar. "Prediction of Penetration Length of Bentonite Slurry in Soil-Bentonite Slurry walls" 7th International Conference on Remediation of Contaminated Sediments held in Dallas, February 4-7, 2013 (Poster Presentation)

23. El Mohtar, Chadi. "Geotechnical Research at the University of Texas" CAEE Undergraduate Advisory Board 2nd research Forum, March 26, 2013.

24. El Mohtar, Chadi, "Overview of Prof. El Mohtar research at UT", Talk to Student Engineering Council as part of Research Symposium week April 17th, 2013.

25. Betak, J. F., Bhasin, A. and El Mohtar, C.S. "The railroad Engineering Sustainability Lifecycle" 100th ASLRRA Annual Meeting, Atlanta, Georgia, April 28-30, 2013.

26. Sangroya, R., El Mohtar, C.S., Yoon, J. and ElKhattab, M. "Applying Rheology to Enhance Grouting Prediction in Geotechnical Applications", 2013 ASCE Texas Section Fall Conference and Centennial Celebration, Dallas, Texas, Sept. 11-14, 2013

27. Kwan, W.S., Kramer, S., Sideras, S., Rathje, E. and El Mohtar, C.S. "Pore Pressure Generation under Different Loading Histories", 2013 ASCE Texas Section Fall Conference and Centennial Celebration, Dallas, Texas, Sept. 11-14, 2013

28. El Mohtar, C.S. "Grouting in Tunneling", Invited talk to CE 387S: Underground Construction, Austin, Texas, Dec. 4, 2013.

29. W.S. Kwan and C.S. El Mohtar. "Comparison between Shear Strength of dry Sand Measured in CSS device using Wire-reinforced membranes and Stacked Rings" GeoCongress 2014: Geo-Characterization and Modeling for Sustainability, Atlanta, GA, Feb. 23-26, 2014.

30. El Mohtar, C.S., "Putting some engineering into our grouting practice", Invited talk at University of Texas, San Antonio, March 21, 2014.

31. Spears, A., Yoon, J., Hwang, H. and El Mohtar, C.S. "Effects of Bentonite Hydration and Uniformity on Hydraulic Conductivity of Sand-Bentonite Mixtures", National Society of Black Engineers 40th Annual Conventions, Nashville, TN, March 26-30, 2014.

32. El Mohtar, C.S. "Engineering our Grouts", Invited talk at University of Washington, Seattle, WA, May 22, 2014.

Chadi El Mohtar, Ph.D.

Assistant Professor

Geotechnical Engineering