Resources

Meeting Presentations

• "Opportunities for Improving CPT Based Pile Design Methods", Transportation Research Board, Annual Meeting 1999, Washington, D.C., January 13, 1999.
• "Improved Measurements of Side Friction Using Textured CPT Friction Sleeves", American Society of Civil Engineers, Geo-Institute, GeoDenver2000, Denver, Colorado, August, 5, 2000.
• "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.
• "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.
• "Detection of Soil Layering in Varved Clay using a Miniature Piezoprobe", Soil Rock America 2003 Conference, Boston, MA, June 23, 2003.
• "Effect of Cementation on Cyclic Soil-Structure Interface Behavior", American Society of Civil Engineers, Engineering Mechanics Conference 2003 Conference, Seattle, WA, July 18, 2003.
• "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.
• "Role of Initial Specimen State and Particle Properties to the Breakage Potential of Granular Soils", Geo-Quebec Conference, Quebec City, Canada, October 25, 2004.
• "Pore Pressure Characterization of Geotechnical Site Using Multi-Level Vibrating Wire Piezometers", Geo-Quebec Conference, Quebec City, Canada, October 27, 2004.
• "Interface Critical State Measurements from Microscale PIV Analysis", NSF-EPSRC Workshop on Micro-Geomechanics Across Multiple Strain Scales, Cambridge, UK, March 21, 2005.
• "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.
• "Biologically Induced Improvement of Loose Sand", 8th National Conference on Earthquake Engineering, San Francisco, CA, April 21, 2006.

Convocation Speaker

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

Invited Presentations

• "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.
• "Investigation and Assessment of Interface Mechanisms in Geotechnical Engineering", GeoDelft, Delft, Netherlands, June, 16, 2000.
• "Investigation of Particulate-Continuum Interface Mechanisms and Their Assessment Through a Multi-Friction Sleeve Penetrometer Attachment", University of Massachusetts, Amherst, Amherst, Massachusetts, April 26, 2001
• "Laboratory and Field Investigations of Factors Affecting Interface Strength", Center for Offshore Foundation Systems, University of Western Australia, Perth, Australia, September 7, 2001.
• "A New Multi-Friction Sleeve Penetrometer", University of Christchurch, Christchurch, New Zealand, December 3, 2001.
• "Interface Load Transfer Degradation During Cyclic Loading", Northeastern University, March 28, 2003.
• "Interface Load Transfer Degradation During Cyclic Loading", Massachusetts Institute of Technology, April 8, 2003.
• "In Situ Detection of Stratigraphic Variations Using a Miniature Piezoprobe", University of California Davis, January 5, 2004.
• "Multi-Scale Characterization and Analysis of Soil-Structure Interfaces", University of California Davis, April 4, 2005.
• "Multi-Scale Characterization and Analysis of Soil-Structure Interfaces", University of California Davis, November 15, 2006.

Conference Session Moderator / Organizer

• DeJong, J.T. (2005) "Field Methods for Detection of Stratigraphic Interfaces and Thin Layers", American Society of Civil Engineers, Geotechnical Special Publication, for the American Society of Civil Engineers, Geo-Institute, Geo-Frontiers 2005 Austin Conference
• DeJong, J.T. and McDowell, G. (2005) "Session II: MicroGeomechanics from the Millistrain Perspective", NSF-EPSRC Workshop on Micro-Geomechanics Across Multiple Strain Scales, Cambridge, UK, March 21, 2005.
• DeJong, J.T. (2006) Session on Dynamic Soil Properties, 8th National Conference on Earthquake Engineering, San Francisco, CA, April 19, 2006.

Conference Organizer

• Organizing Committee - Technical Co-Chair, Program Co-Chair, Short Course, Workshop and Debate Chair, (2006) Geotechnical Engineering in the Information Technology Age, GeoCongress Atlanta 2006, February 26 – March 1, 2006.