Presentations

Invited Presentations

  1. “Improving CPT Based Pile Design Methods Through the Direct In-Situ Measurement of Interface Strength”, American Society of Civil Engineers, Deep Foundations Short Course, Atlanta, GA, January 22, 2000.
  2. “Investigation and Assessment of Interface Mechanisms in Geotechnical Engineering”, GeoDelft, Delft, Netherlands, June, 16, 2000.
  3. “Investigation of Particulate-Continuum Interface Mechanisms and Their Assessment Through a Multi-Friction Sleeve Penetrometer Attachment”, Presented at: University of Texas, Austin (May 8, 2001), University of Massachusetts, Amherst (April 26, 2001), Stanford University (March 8, 2001), Montana State University (February, 2001), Ohio University (January 24, 2001).
  4. “Laboratory and Field Investigations of Factors Affecting Interface Strength”, Center for Offshore Foundation Systems, University of Western Australia, Perth, Australia, September 7, 2001.
  5. “A New Multi-Friction Sleeve Penetrometer”, University of Christchurch, Christchurch, New Zealand, December 3, 2001.
  6. “Interface Load Transfer Degradation During Cyclic Loading”, Northeastern University, March 28, 2003.
  7. “Interface Load Transfer Degradation During Cyclic Loading”, Massachusetts Institute of Technology, April 8, 2003.
  8. “In Situ Detection of Stratigraphic Variations Using a Miniature Piezoprobe”, University of California Davis, January 5, 2004.
  9. “Multi-Scale Characterization and Analysis of Soil-Structure Interfaces”, University of California Davis, April 4, 2005.
  10. “Multi-Scale Characterization and Analysis of Soil-Structure Interfaces”, University of California Berkeley, November 14, 2006.
  11. “Bio-Soils Interdisciplinary Science and Engineering Initiative”, National Science Foundation, August 22, 2007.
  12. “UC Davis Bio-Mediated Cementation of Sands and the US-UK Bio-Soils Initiative”, Transportation Research Board, Washington, D.C., January, 15, 2008.
  13.  “The Use of Full-Flow Penetrometers in Soft Clay”, Norwegian Geotechnical Institute, Oslo, Norway, June 19, 2008.
  14.  “Recommended Testing and Interpretation of Full-Flow Penetrometer Testing”, Fugro Inc, Offshore Engineering Division, Leidschendam, Netherlands, June 20, 2008.
  15.  “Bio-Mediated Soil Improvement”, Opening Keynote Presentation at the 1st International Bio-Geo-Civil Engineering Conference, Delft, Netherlands, June 23, 2008.
  16. “Recommended Testing and Interpretation of Full-Flow Penetrometer Testing”, Deltares, Delft, Netherlands, June 25, 2008.
  17. “General Report – In-situ Testing” 17th International Conference on Soil Mechanics and Foundation Engineering, October 7, 2009.
  18.  “Effects of Sample Disturbance and Consolidation Procedures on the Behaviour of Intermediate Soils”, Center for Offshore Foundation Systems, University of Western Australia, May 28, 2010.
  19. “Bio-Mediated Ground Improvement – Part of the Future?”, Deep Foundations Institute, Ground Improvement Workshop, Los Angeles, CA, October 12, 2010.
  20. “The Use of Full Flow Penetrometers in Soft Clay”, ConeTec, Vancouver, Canada, January 27, 2011.
  21. “Seismic and Resistivity Measurements for Real-Time Monitoring of Bio-Mediated Soil Improvement”, American Geophysical Union, Session Keynote Presentation, SanFrancisco, CA, December 6, 2011.
  22.  “Life Cycle Assessment of Ground Improvement Methods: Implementation & Challenges”, NRC Committee on Geological and Geotechnical Engineering Meeting, Washington, D.C., December 15, 2011.
  23. “Variable Penetration Rate Cone Testing for Characterization of Intermediate Soils”, 4th International Site Characterization Conference, Keynote Presentation, Receife, Brazil, September 19, 2012.
  24. “Variable Penetration Rate Cone Testing: A Numerical & Experimental Investigation”, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil, May 2, 2013.
  25. “Characterization of Intermediate Soils: Laboratory vs. In-situ Characterization”, University of Cambridge, Cambridge, UK, May 30, 2013.
  26. “Biological Improvement of Sand for Liquefaction Prevention & Mitigation”, Geotechnique Symposium in Print @ Institute of Civil Engineer Headquarters, London, UK, June 3, 2013.
  27. “Bio-Geo-Chemical Processes for Improvement of Soil Engineering Properties”, Couple Phenomena in Environmental Geotechnics, Turin, Italy, July 2, 2013.
  28. “Characterization of Intermediate Soils “Should I Trust Laboratory or
    In-situ Measurements?”, GEI Consultants, Rancho Cordova, CA, November 22, 2013.
  29. “Geophysical Measurements for Real-time Monitoring of Biogeochemical Processes for Improvement of Soil Engineering Properties and Subsurface Environmental Conditions”, American Geophysical Union, San Francisco, CA, December 12, 2013.
  30. “iBPT Analysis at Headworks West Reservoir”, LADWP, Los Angeles, CA, February 13-14, 2014.
  31. “Bacteria, Bio-films, and Invertebrates…the Next Generation of Geotechnical Engineers?”, GeoCongress 2014,  Atlanta, GA, February 24, 2014.
  32. “iBPT Analysis at Headworks West Reservoir”, LADWP, Los Angeles, CA, February 13-14, 2014.
  33. “Instrumented Becker Penetration Test (iBPT) for Improved Characterization of Gravelly Deposits”, NC State, Raleigh, N.C., February 27, 2014.
  34. “A new instrumented Becker Penetration Test (iBPT) for Improved Characterization of Gravelly Deposits”, USBR, Denver, CO, March 31, 2014.
  35. “Instrumented Becker Penetration Test for Liquefaction Assessment of Gravelly Soils”, USACE – Sacramento Section, Sacramento, CA, December 4, 2014.
  36. “Instrumented Becker Penetration Test for Liquefaction Assessment of Gravelly Soils”, IACGE 18th Geotechnical Workshop, Los Angeles, CA, February 20, 2015.
  37. “Liquefaction Characterization of Gravelly Soils”, CalGeo Conference, Carmel, CA, April 24, 2015.
  38. “Characterization of Gravelly Alluvium”, 6th ICEGE, Christchurch, NZ, November 2, 2015.
  39. “Characterization of Gravelly Soils for Geotechnical Engineering Applications”, Cavendish Laboratory, Cambridge University, April 21, 2016.
  40. “Sustainable Biogeotechnics: The Emergence of Bio-inspired and Bio-mediated Geotechnical Innovation”, Geotechnical Engineering Group, Cambridge University, April 27, 2016.
  41. “Integrated Approach to Characterization of Gravelly Alluvium”, BP Institute, Cambridge University, April 28, 2016.
  42. “Bio-mediated Soil Improvement”, Geotechnical Engineering Group, University of Dundee, May 10, 2016.
  43. “Considerations in the Development of CPT Based Empirical Correlations”, Offshore Engineering Group, Fugro Engineers B.V., Nootdorp, Netherlands, July 6, 2016.
  44. “Transforming Sand to Sandstone: Increasing the Reliability of Civil Infrastructure”, Sand – An (In)finite Resource, Course by ETH Zurich & TU Delft, July 7, 2016.

Meeting Presentations

  1. “Opportunities for Improving CPT Based Pile Design Methods”, Transportation Research Board, Annual Meeting 1999, Washington, D.C., January 13, 1999.
  2. “Improved Measurements of Side Friction Using Textured CPT Friction Sleeves”, American Society of Civil Engineers, Geo-Institute, GeoDenver2000, Denver, Colorado, August, 5, 2000.
  3. “The ’S-Shaped’ Response of Soil Under Cyclic Shearing: a Micro-Mechanical Investigation”, Center for Offshore Foundation Systems Workshop, University of Western Australia, Perth, Australia, November 13, 2001.
  4. “Physical Evidence of Shear Banding at Granular-Continuum Interfaces”, American Society of Civil Engineers, Engineering Mechanics Conference 2002 Conference, New York, New York, June 4, 2002.
  5. “Detection of Soil Layering in Varved Clay using a Miniature Piezoprobe”, Soil Rock America 2003 Conference, Boston, MA, June 23, 2003.
  6. “Effect of Cementation on Cyclic Soil-Structure Interface Behavior”, American Society of Civil Engineers, Engineering Mechanics Conference 2003 Conference, Seattle, WA, July 18, 2003.
  7. “Evaluation of the Undrained Shear Strength Profile in Soft Layered Clay Using Full-Flow Probes”, 2nd International Site Characterization Conference, Porto, Portugal, September 21, 2004.
  8. “Role of Initial Specimen State and Particle Properties to the Breakage Potential of Granular Soils”, Geo-Quebec Conference, Quebec City, Canada, October 25, 2004.
  9. “Pore Pressure Characterization of Geotechnical Site Using Multi-Level Vibrating Wire Piezometers”, Geo-Quebec Conference, Quebec City, Canada, October 27, 2004.
  10. “Interface Critical State Measurements from Microscale PIV Analysis”, NSF-EPSRC Workshop on Micro-Geomechanics Across Multiple Strain Scales, Cambridge, UK, March 21, 2005.
  11. “Considerations in Determining the Remoulded Undrained Shear Strength from Full Flow Penetrometer Cycling”, International Symposium on Frontiers in Offshore Geotechnics, Perth, Australia, September 21, 2005.
  12. “Biologically Induced Improvement of Loose Sand”, 8th National Conference on Earthquake Engineering, San Francisco, CA, April 21, 2006.
  13. “The influence of full-flow penetrometer area ratio on undrained strength measurements”, 6th International Conference on Offshore Site Investigation and Geotechnics, Society for Underwater Technology (SUT), September, 13, 2007.
  14. “Bio-Mediated Ground Improvement”, Transportation Research Board, Washington, D.C., January, 15, 2008.
  15. “Bio-Medited Calcite Precipitation”, ASCE Geo-Congress, New Orleans, March 10, 2008.
  16. “Linking Micro-Scale Behavior with Measured Global Interface Response”, Research Symposium on the Characterization and Behavior of Interfaces, September 21, 2008.
  17.  “Real-Time Geophysical Monitoring of Bio-Mediated Soil Improvement”, AGU Chapman Conference on Bio-Geophysics, October 13-16, 2008.
  18.  “Bio-Mediated Soil Improvement: Load Transfer Mechanisms at the Micro- and Macro- Scales” U.S.-China Workshop on Ground Improvement Technologies, March 14, 2009.
  19.  “Upscaling of bio-mediated soil improvement”, 17th International Conference on Soil Mechanics and Foundation Engineering, October 8, 2009.
  20. “Engaging Students with Diverse Learning Styles in Large Geotechnical Engineering Classes”, ASCE Geo-Institute Annual Conference: Geo-Frontiers 2011, March 14, 2011.
  21. “Biological Improvement of Sand for Liquefaction Prevention and Damage Mitigation”, NSF NEESR Annual Conference, Boston, MA, July 11, 2012.
  22. “2nd International Workshop on Bio-Soil Interactions and Engineering”, NSF CMMI Annual Conference, Boston, MA, July 10, 2012.
  23. “Bacteria, Bio-films, and Invertebrates… the Next Generation of Geotechnical Engineers?”, GeoCongress 2014, Atlanta, GA, Feb. 24, 2014.
  24. “Improved Characterization of Gravelly Soils Using an Instrumented Becker Penetration Test”, PEER Annual Meeting, Oakland, CA, October 26, 2012.
  25. “New instrumented Becker Penetration Test (iBPT) for Improved Characterization of Gravelly Deposits Within and Underlying Dams”, ASDSO Conference, San Diego, CA, September 22, 2014.

Convocation Speakers

  1. “The Story We Find Ourselves In”, University of Massachusetts Amherst, College of Engineering Graduation Faculty Speech, May 21, 2006.

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