PAPERS PRESENTED AT TECHNICAL MEETINGS
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"Parametric Study of Open Core-Hole on the Behavior of Drilled Shafts Socketed in Soft Rock ", ASCE, Denver, Colorado, February 18, 2007.
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"Monitoring the Installation and Curing of a Large Diameter ACIP Pile in Very Dense Sand", ", ASCE, Denver, Colorado, February 18, 2007.
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"Microstructural and Geotechnical Properties of Houston-Galveston Area Soft Clays", ASCE, Denver, Colorado, February 19, 2007.
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"Geotechnical Properties of Marine and Deltaic Soft Clays", ASCE, Denver, Colorado, February 20, 2007.
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"Characterization of Soft Clays in the Texas Gulf Coast Using the Texas Cone Penetrometr (TCP)", ASCE, Denver, Colorado, February 18, 2007.
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"Single Lap Joint Testing with analytical and FEM Verification for Pipe-in-Pipe Application", Pipelines 2005, ASCE, Houston, TX, August 21, 2005.
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"Polyuretane Based Grouts for Deep Off-Shore Pipe-in-Pipe Application", Pipelines 2005, ASCE, Houston, TX, August 21, 2005.
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"Thermal and Bonding shear strength of Polymer Based and Cementitious Grouts for Pipe-in-Pipe and Geothermal Heat pump System", Pipelines 2005, ASCE, Houston, TX, August 21, 2005.
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"Two dimensional Model Study on Infiltration Control at a lateral Pipe Joint using Acrylamide Grout", Pipelines 2005, ASCE, Houston, TX, August 22, 2005.
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"Sewer-Pipe Joint Infiltration Test Protocol Developed by CIGMAT ", Pipelines 2005, ASCE, Houston, TX, August 22, 2005.
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"Life cycle Cost Model (LCC-CIGMAT) for Wastewater Systems", Pipelines 2005, ASCE, Houston, TX, August 22, 2005.
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"Bonding Strength of Epoxy Coatings used to protect Concrete in Wastewater Facilities and 3-D FEM Analyses", Pipelines 2005, ASCE, Houston, TX, August 22, 2005.
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"Field Study on Characterizing Backfill materials around Water Pipelines", Pipelines 2005, ASCE, Houston, TX, August 23, 2005.
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"Flowable Backfill with Flexible pipe in Trench condition and FEM Verification", Pipelines 2005, ASCE, Houston, TX, August 23, 2005.
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"Axial Load-Displacement Relationship for ACIP Socketed in Clay Shale", GeoFrontiers 2005, International Conference, ASCE, GeoInstitute, Austin, TX, January 25, 2005.
"Constructability of ACIP Piles in the Texas Gulf Coast Soils", GeoFrontiers 2005, International Conference, ASCE, GeoInstitute, Austin, TX, January 26, 2005.
"Performance of Coated Concrete in Wastewater Environment", Pipelines 2004, International Conference, ASCE Pipeline Division, San Diego, CA, August 4, 2004.
"Behavior of Flexible Plastic Pipe with Sand Backfill in Trench Condition and Verification with Finite Element Method", Pipelines 2004, International Conference, ASCE Pipeline Division, San Diego, CA, August 3, 2004.
"Improved Design Economy for Drilled Shafts in Rock", Texas Department of Transportation, RMC 5 Meeting, Austin, TX, June 7, 2004.
"Nondestructive Properties of Clay shale and Limestone in Dallas, Texas", Proceeding, American Rock Mechanics Association, Houston, TX, June 6, 2004.
"Development and Characterization of Piezoresistive Smart Structural Materials", Engineering, Construction and Operations in Challenging Environments, Earth & Space 2004, ASCE Aerospace Division, League City, TX, March 10, 2004.
"Characterizing of Rocks for Drilled Shaft Socketing", Geosupport 2004, Orlando, FL, January, 2004.
"Verification Testing for Coatings Liners and Grouts for Sewer Systems and LCC Model", Underground Technology Conference, Houston, Texas, January 13, 2004.
"Piled Raft- International Perspective", DFI 28th Annual Conference, Miami, FL, October 24, 2003.
"CIGMAT Testing Programs for Coatings/Linings, Grouts and Pipe-Joints in Sewers", ASCE Pipeline Conference, Baltimore, MD, July 15, 2003.
"CIGMAT Testing Programs for Coatings/Linings, Grouts and Pipe-Joints in Sewers", Proceedings, ASCE Grouting Conference, New Orleans, LA, February 15, 2003.
"Verification Testing for Coatings and Grouts Used in Sewer Rehabilitation and Pipe Joints at CIGMAT- University of Houston,",Underground Technology Conference, Houston, Texas, January 15, 2002.
"Production and Characterization of YBCO Nanoparticles," Applied Superconductivity Conference, ACS-2002, Houston, Texas, April 28, 2002.
"Joining BSCCO Tapes and Bulk Materials," Applied Superconductivity Conference, ACS-2002, Houston, Texas, April 28, 2002.
"Leaching of Calcium from Concrete in Acidic and Sulfate Environments," ACI Fall Convention, Dallas, Texas, November 1, 2001.
"Performance of Coated Concrete in Sulfuric Acid Environment," ACI Fall Convention, Dallas, Texas, November 1, 2001.
"Controlled Verification Testing of Sewer Rehabilitation Techniques and Pipe Joints at CIGMAT- University of Houston," ASCE, World Water & Environmental Resources Congress 2001, EWRI, Orlando, Florida, May 21, 2001.
"Current Trenchless Technoology Research at CIGMAT," Underground Construction Technology (UCT) Conference, UCT-2001, Session 64, Houston, Texas, January 23, 2001.
"Fatigue Crack Growth in Polyester Polymer Concrete," ACI Spring Convention, San Diego, California, March 27, 2000.
"Fracture Properties of Polyester Polymer Concrete with Chopped Graphite Fibers, ACI Spring Convention, San Diego, California, March 27, 2000.
"Properties of Fly Ash-Cement Cellular Grouts for Sliplining and Backfililng Applications," Advances in Grouting and Ground Modification, ASCE, Denver, CO, June 18, 2000
"Designing Flowable Grout Mixes Using Foundry Sand, Clay and Fly Ash," Advances in Grouting Technologies ASCE, , Denver, CO, June 18, 2000.
"Mechanical Properties and Chemical Resistance of Auger Grouts," Advances in Foundation Technologies, ASCE, Denver, CO, June 19, 2000.
"Characterizing the Behavior of Hydrophilic Polyuretane Grout," Advances in Grouting Technologies ASCE, GSP 104, Denver, CO, pp. 234-245.
"Factors Affecting the Joining of Superconducting Materials," 6th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors (M2S-HTSC-VI), Houston, Texas, February 21, 2000.
"Testing Coating Materials for Concrete and Clay Brick Wastewater Facilities," Society for Protective Coating, Houston, Texas, November 15, 1999.
"New Corrosion-Resistant Materials for the Construction Industry," Multi-Disciplinary Workshop on the Biodeterioration of Construction Materials, NSF Sponsored, Houston, Texas, October 15, 1999.
"Research to Benefit Municipal Construction & Rehabilitation," Underground Construction Technology (UCT) Conference, UCT-99, Session 41, Houston, Texas, January 13, 1999.
"Recycled Materials for Embankment Construction,", ASCE, Boston, MA, October 1998.
"Role of Constituents on the Behavior of Flowable Fly Ash Fill," ASCE, Boston, MA, October 1998.
"Testing Program for Coating and Liners," Underground Construction Technology (UCT) Conference, UCT-98, Houston, Texas, January 1998.
"Role of Constitutents on the Behavior of Composite BSCCO Tapes," Materials Research Society, San Francisco, California, April 1997
"Pulse Velocity for Characterizing Bulk Materials," Materials Research Society, San Francisco, California, April 1997.
"Recycled Materials for Highway Embankment in Texas," Texas Solid Waste Management Conference, TNRCC, Austin, Texas, pp. 485-498, 1996.
"Development and Characterization of Cellular Grouts," Materials for New Millennium, ASCE, Washington D.C., November 1996.
"Shrinkage Control in Polyacrlyamide Grouts and Grouted Sands," Materials for New Millennium, ASCE , pp. 829-839, Washington D.C., November 1996.
"Coating Materials for Watewater Facilities," Materials for New Millennium, ASCE , Washington D.C., November 1996.
"Behavior of Polymer Concrete," Materials for New Millennium, ASCE , Washington D.C., November 1996.
"Fly ash and Tire Chips for Highway Embankments," Materials for New Millennium, ASCE, Washington, D.C., November 1996.
"Role of Constitutents on the Behavior of Composite BSCCO Tapes," Materials Research Society, San Francisco, California, April 1996.
"Electromechanical Properties of Jointed BPSCCO Composites," Materials Research Society, San Francisco, California, April 1996.
"Bioremediation of Phenol Contaminated Soils," Geoenvironmental 2000, American Society of Civil Engineering, New Orleans, Louisiana, February 1995.
"Solidification/Stabilization of Phenol Contaminated Soils," Geoenvironmental 2000, American Society of Civil Engineering, New Orleans, Louisiana, February 1995.
"Effect of Clay and Biosurfactant on the Bioremediation of Toluene," Geoenvironmental 2000, American Society of Civil Engineering, New Orleans, Louisiana, February 1995.
"Electromechanical Properties of BSCCO Tapes," Materials Research Society, San Francisco, California, April 1995.
"Residual Stresses and TEM Analysis on BSCCO Tapes," Materials Research Society, San Francisco, California, April 1995.
"Treating Contaminated Cracked and Permeable Field Clay with Grout," Geoenvironmental 2000, American Society of Civil Engineering, New Orleans, Louisiana, February 1995.
"Bioremediation of Phenol Contaminated Soils," Geoenvironmental 2000, American Society of Civil Engineering, New Orleans, Louisiana, February 1995.
"Solidification/Stabilization of Phenol Contaminated Soils," Geoenvironmental 2000, American Society of Civil Engineering, New Orleans, Louisiana, February 1995.
"Effect of Clay and Biosurfactant on the Bioremediation of Toluene," Geoenvironmental 2000, American Society of Civil Engineering, New Orleans, Louisiana, February 1995.
"Fracture Behavior of Cement Grouted Sand," American Society of Civil Engineering, Atlanta, Georgia, October 1994.
"Flexural and Fracture Properties of Polyester of Polymer Concrete," American Concrete Institute, Tampa, Florida, October 1994.
"Compressive Behavior of Steel-Polymer Concrete Composite Elements," American Concrete Institute, Tampa, Florida, October 1994.
"Reprocessing of Sintered and Melt High Temperature Superconducting Materials," Materials Research Society, San Francisco, California, April 1994.
"Metal Fiber-YBCO Bulk Composites: Electromechanical Behavior," Materials Research Society, San Francisco, California, April 1994.
"Processing and Characterization of BSCCO-2223 Tapes," Materials Research Society, San Francisco, California, April 1994.
"Polymer-Melt YBCO Interaction," Materials Research Society, San Francisco, California, April 1994.
"Biosurfactant Production using Non-aseptic Fermentation of Mixed Cultures," Materials Research Society, Spring Meeting, San Francisco, California, April 1994.
"Waste Treatment Using Fly Ash," American Coal Ash Association, south-Central Region Ash Use Workshop, Houston, Texas, April 1994.
"Chemical Crack Injection Technology and Application," International Concrete Repair Institute (ICRI), Texas, March 1994.
"Solidification/Stabilization of Metal Contaminated Field Waste with Binder Mixtures," 24 th Fine Particle Society Meeting, Chicago, Illinois, August 1993.
"Effect of Clay Types and Binders on the Solidified Phenol Contaminated Soils," 24 th Fine Particle Society Meeting, Chicago, Illinois, August 1993.
"Processing Pressures for Sintered Bulk Superconducting Ceramic Composite," 24 th Fine Particle Society Meeting, Chicago, Illinois, August 1993.
"Integrated Treatment Train for Soils Contaminated with Organics and Metals," Fourth Symposium, GCHSRC, Beaumont, Texas, April, 1993.(poster)
"Influence of Additives on Cement Grouts and Grouted Sands," 1992 Texas Section Fall Convention, ASCE, Houston, Texas, October 1992.
"Polymer Concrete and Potential Applications," 1992 Texas Section Fall Convention, ASCE, Houston, Texas, October 1992.
"Solidification/Stabilization of Metal Contaminated Field Waste," 1992 Texas Section Fall Convention, ASCE, Houston, Texas, October 1992.
"Seepage Control in Kaolinite Clay with Simulated Cracks," ASCE Specialty Conference on Grouting, Soil Improvement and Geosynthetics, New Orleans, Louisiana, February 1992.
"Properties of Cement Grouts and Grouted Sands with Additives," ASCE Specialty Conference on Grouting, Soil Improvement and Geosynthetics, New Orleans, Louisiana, February 1992.
"Bonding Strength of Grouts and Behavior of Silicate Grouted Sand," ASCE Specialty Conference on Grouting, Soil Improvement and Geosynthetics, New Orleans, Louisiana, 1992.
"Recycling of Used Oil: Review and Laboratory Verification," HMC-92, HMCRI, New Orleans, Louisiana, February 1992.
"Biodegradation of Phenol with Activated and Acclimated Sludge," HAZTEC International, Houston, Texas, February 1992
"Solidification and Performance of Cement Doped with Phenol," HMHW/HMC-South '91, HMCRI, Houston, Texas, February, 1991.
"Cement/Fly Ash Treatment for Metal-Contaminated Field Waste," HMHW/HMC-South '91, HMCRI, Houston, Texas, February, 1991.
"Treatment for Cracked and Permeable Houston Clay," HMHW/HMC-South '91, HMCRI, Houston, Texas, February, 1991.
"Solidification/Stabilization of Organic Hazardous Wastes," Third Symposium, GCHSRC, Beaumont, Texas, February, 1991.(poster)
"Repair of Cracked and Permeable Clays," Third Symposium, GCHSRC, Beaumont, Texas, February, 1991.(poster)
"Flexural Strength, Toughness and Fracture Properties of Glass Fiber Reinforced Polyester PC," Session on Polymer Concrete, ACI, Philadelphia, Pennsylvania, November, 1990.
"Microprobe, XPS Analysis and Properties of Ceramic-Polymer Composite," Fall Convention, ASME, Dallas, Texas, November, 1990.
"Aggregates, Fibers and Coupling Agent in Polyester PC" Materials Engineering Congress, ASCE, Denver, Colorado, August, 1990.
"Immobilization of Phenol Using Polyester Polymer," HMCRI's 7th National RCRA/SUPERFUND, St. Louis, Missouri, May, 1990.
"Laboratory Evaluation of Repairing Cracked Kaolinite Clay Under Hazardous Waste Environment" HMCRI's 7th National RCRA/SUPERFUND, St. Louis, Missouri, May, 1990.
"Fracture Properties of Polyester Polymer Concrete," ANTEC-90, Dallas, Texas, May 1990.
"Repairing of Cracked and Permeable Clays," Second Symposium, GCHSRC, February, 1990. (poster)
"Characterization of Superconducting Ceramic- Fiber Composite," Spring Convention, American Ceramics Society, April, 1990,
"Behavior of Ceramic-Polymer Composite," Material Research Society, Fall Convention, Boston, November, 1989.
"Processing and Performance of Metal Fiber Reinforced HTSC," Material Research Society, Fall Convention, Boston, November, 1989
"Laboratory Modeling of Pile Driving in a Pressure Chamber," Foundation Engineering Congress, American Society of Civil Engineers, Evanston, Illinois, June 26,1989.
"Behavior of Epoxy and Polyester Polymer Concrete," American Society of Civil Engineers, Texas Section, Spring Convention, Dallas, March, 1989.
"Properties of MMA Modified Superconducting Ceramics," Material Research Society, Fall Convention, Boston, November, 1988.
"Influence of Aggregate on the Fracture Behavior of Polyester Polymer Concrete," American Concrete Institute, Spring Convention, Orlando, Florida, March, 1988.
"Fracture Behavior of Polymer Concrete," American Concrete Institute, Fall Convention, Seattle, Washington, November 13, 1987.
"Bonding Agent in Polyester Polymer Concrete," Tuthill International Symposium, American Concrete Institute, Fall Convention, Seattle, Washington, November 11,1987.
"Stress-Strain Behavior of Polymer Concrete Systems," Fifth International Congress on Polymers in Concrete," Brighton, England, September 23, 1987.
"Fracture Properties of Epoxy Polymer Concrete," SEM-RILEM International Conference on Fracture of Concrete and Rock, Houston, Texas, June 19, 1987.
"Influence of Fiber Reinforcement on Polyester Polymer Concrete," 45th Annual Technical Conference (ANTEC 1987) of Society of Plastic Engineers, Los Angeles, California, May 1987.
"Modeling Grouted Sand Behavior Under Torsional Loading," 65th Annual Meeting of the Transportation Research Board, Washington, D.C., January 1986.
"Tensile Properties of Chemically Grouted Sand," 64th Annual Meeting of the Transportation Research Board, Washington, D.C., January 1985.
"Erosion Model for Reclamation Areas," 1982 National Symposium on Surface Mining, Hydrology, Sedimentology and Reclamation, Lexington, Kentucky, 1982.

Invited Seminars
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"Advances in Deep foundations in North America", International Workshop on Deep Foundations, Port and Airport Authority, Yokosuka, Japan, January 28, 2007. (Keynote Speaker)
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"Coating and Grouting Materials for Infrastructure Rehabilitation", EPA/ETV Workshop, Dallas, Texas, May 9, 2007.
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"Grouting Materials and Applications in Geotechnical Engineering", Special Seminar, Texas A&M University, College Station, Texas, September 21, 2006.
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"Repair Materials for Wastewater Systems", EPA Workshop on Water Infrastructure, EPA, Washington D.C., March 19-21, 2006.
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"Designing and Contracting ACIP Piles for a Bridge Foundation in Mixed Soil Profile", Special Seminar, Georgia Institute of Technology, Atlanta, GA, January 25, 2006.
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"Nanoparticles and Smart Materials in environmental and Civil engineering Applications", 8th Annual Technological Advances in Science, Medicine & Engineering Conference, University of Guelph, Ontario, Canada, July 3, 2004.
"Polymer Composites - Mechanical Properties and Chemical Resistance", ExxonMobil Chemical, Baytown Technology and Engineering, Baytown, Texas, September 26, 2003.
"ASR and DEF Problems in Concrete", AGC and ACI Joint Workshop, Houston, Texas, July 10, 2003.
"Verification Testing Program for Rehabilitating Wastewater Systems" Colorado Municipal Forum on Trenchless Technology, University of Colorado, Boulder, Colorado, April 3, 2002.
"Applications of Foundry Sands in TxDOT Applications," 9th Annual Conference," Sponsored by Texas Cast Metal Association (TCMA), Austin, Texas, March 29, 2001.
"Testing A Polymer Concrete Coating for Concrete/Clay Brick Wastewater Facilities," 30th Anniversary" Sponsored by ACI, Philadelphia, Pennsylvania, March 28, 2001.
"Testing Protocol for Coating and Lining Materials for Concrete Wastewater Facilities," National Sanitary Foundation-International, Stakeholder's Meeting, Baltimore, Maryland, February 6, 2001.
"Testing Protocol for Leak Control Using Grouts," National Sanitary Foundation-International, Stakeholder's Meeting, Baltimore, Maryland, February 6, 2001.
"Testing Protocol for Sewer Pipe Joint Infiltration," Environmental Protection Agency, Stakeholder's Meeting, Houston, Texas, January 26, 2001.
"Testing Program for Coating and Lining Materials for Concrete Wastewater Facilities," National Sanitary Foundation-International, Stakeholder's Meeting, Houston, Texas, March 2, 2000.
"Coating, Lining and Grouting Materials for Concrete Wastewater Facilities," National Sanitary Foundation-International, Stakeholder's Meeting, Baltimore, Maryland, November 1999.
"Rehabilitation Materials for Concrete Wastewater Facilities," EPA-Watershed Facilities, Lecture Series, , New Jersey, May 1999.
"Testing of Coating and Lining Materials for Concrete Wastewater Facilities," Internationl Concrete Repair Institute, Spring Convention, Houston, Texas, March 1998.
"Are Coating and Liners Effective Rehabilitation Techniques," International Concrete Repair Institute (ICRI), Houston Chapter, October 1996.
"Waste Treatment Using Fly Ash," American Coal Ash Association, South-Central Region Ash Use Workshop, Houston, Texas, April 1994.
"Chemical Crack Injection Technology and Application," International Concrete Repair Institute (ICRI), Texas, March 1994.
"Behavior of Grouts and Grouted Sands", Department of Civil Engineering Seminar Series, Rice University, Houston, Texas, October, 1992.
"Solidification/Stabilization of Phenolic Waste Using Cementitious and Polymeric Materials," Solidification /Stabilization: Mechanisms and Applications, Second Annual Symposium GCHSRC, February, 1990.
"Laboratory Modeling of Pile Driveability," Structural and Geotechnical Engineering Seminar, University of Washington, Seattle, November 13, 1987.
"Laboratory Modeling of Pile Driveability Using Vibratory Driver and Impact Hammer," 11th Annual Meeting of the Deep Foundations Institute, October 23, 1986.
"Interactive Role of Constituents on the Mechanical Behavior of Chemically Grouted Sand," Special Seminar, Colloquia on Modern Topics in Mechanics, Council on Theoretical and Applied Mechanics, Northwestern University, Evanston, Illinois, July 27, 1984.
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