Solving soil interaction problems through a
fundamental science-based inquiry approach in a
creative, collaborative, and interdisciplinary environment.

Resources

 

Publications

Journal Publications

  1. Zettler, T.E., Frost, J.D., and DeJong, J.T. "Shear Induced Changes in Geomembrane Surface Topography"; Geosynthetics International, Vol. 7, No. 3, pp. 243-267, 2000.
  2. DeJong, J.T., Frost, J.D., Cargill, P.E. "Effect of Surface Texturing on CPT Friction Sleeve Measurements"; American Society of Civil Engineers, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 127, No. 2, pp. 158-168, 2001.
  3. DeJong, J.T and Frost, J.D. "A Multisleeve Friction Attachment for the Cone Penetrometer"; American Society for Testing and Materials, Journal of Geotechnical Testing, Vol. 25, No. 2, pp. 111-127, 2002.
  4. DeJong, J.T., Frost, J.D., Saussus, D.R. "Measurement of Relative Surface Roughness at Particulate-Continuum Interfaces"; American Society for Testing and Materials, Journal of Testing and Evaluation, Vol. 30, No. 1, pp. 8-19, 2002.
  5. Frost, J.D., DeJong, J.T., and Recalde, M. "Shear Failure Behavior of Granular-Continuum Interfaces"; Engineering Fracture Mechanics, Vol. 69, No. 17, pp. 2029-2048, 2002.
  6. Frost, J.D., Zettler, T.E., DeJong, J.T., Lee, S.W., and Kagbo, S. "Strain Induced Changes in Geomembrane Surface Topography"; Geosynthetics International, Vol. 9, No. 1, pp. 21-20, 2002.
  7. DeJong, J.T., Randolph, M.F., and White, D.J. "Interface Load Transfer Degradation During Cyclic Loading: A Microscale Investigation"; Soils and Foundations, Vol. 43, No. 4, pp. 81-94, 2003.
  8. Saussus, D.R., Frost, J.D., and DeJong, J.T. "Statistical Analysis of Friction Sleeve Length Effects on Soil Classification"; International Journal of Numerical and Analytical Methods in Geomechanics, Vol. 28, No. 12, pp. 1257-1278, 2004. 
  9. Frost, J.D. and DeJong, J.T. "In Situ Assessment of Role of Surface Roughness on Interface Response"; ASCE Journal of Geotechnical and Geoenvironmental Engineering Vol. 131, No. 4, pp. 498-511, 2005.
  10. Frost, J.D., DeJong, J.T., and Saussus, D.R. "Analytical Investigation of Friction Sleeve Length Effects on Stratigraphic Interpretation"; American Society of Civil Engineers, International Journal of Geomechanics, 2006, Vol. 6, No. 1, pp. 11-29. 
  11. DeJong, J.T. and Westgate, Z.J. "Role of Overconsolidation on Sand-Geomembrane Interface Response and Material Damage Evolution"; Geotextiles and Geomembranes, 2005, Vol. 23, pp. 486-512.
  12. DeJong, J.T., White, D.J., and Randolph, M.F. "Microscale Observation and Modelling of Soil-Structure Interface Behavior Using Particle Image Velocimetry"; Soils and Foundations, 2006, Vol. 46, No. 1, pp. 15-28.
  13. DeJong, J.T., Fritzges, M.B., and Nüsslein, K. "Microbial Induced Cementation to Control Sand Response to Undrained Shear"; ASCE Journal of Geotechnical and Geoenvironmental Engineering, 2006, Vol. 132, No. 11, pp. 1381-1392.
  14. Civjan, S., Bonczar, C., Breña, S.F., DeJong. J.T., and Crovo, D.  "Integral Abutment Bridge Behavior: Parametric Analysis of a Massachusetts Bridge"; ASCE Journal of Bridge Engineering, Vol. 21, No. 1, pp. 64-74, 2006.
  15. Ostendorf, D.W., Hinlein, E.S., Ahlfeld, D.P., and DeJong, J.T. "Calibrated Models of Deicing Agent Solids, Pavement Texture, and Specific Conductivity of Highway Runoff"; American Society of Civil Engineers, Journal of Environmental Engineering, (in press).
  16. DeJong, J.T., Yafrate, N.J., and Don. J. DeGroot. "Development of a Miniature Piezoprobe for High Resolution Detection of Stratigraphic Interfaces"; ASTM Geotechnical Testing Journal, 2006.
  17. Breña, S. F., Bonczar, C., Civjan, S.A., DeJong, J.T., and Crovo, D.S. "Evaluation of Seasonal and Yearly Behavior of an Integral Abutment Bridge"; ASCE Journal of Bridge Engineering, Vol 12., No. 3, pp. 296-305, 2007.
  18. DeJong, J.T. and Christoph, G.G. "Influence of Particle Properties and Initial Specimen State on 1-D Compression and Hydraulic Conductivity at High Stress Levels"; ASCE Journal of Geotechnical Engineering, Vol. 135, No. 3, pp. 449-454, 2009.
  19. DeJong, J.T. and Westgate, Z.J. "Role of Initial State, Material Properties, and Confinement Condition on Local and Global Soil-Structure Interface Behavior"; ASCE Journal of Geotechnical and Geoenvironmental Engineering, Vol. 135, No. 11, pp. 1646-1660, 2009.
  20. Yafrate, N.J., DeJong, J.T., DeGroot, D.J., and Randolph, M.R. "Evaluation of Remolded Shear Strength and Sensitivity of Soft Clay using Full-Flow Penetrometers"; ASCE Journal of Geotechnical and Geoenvironmental Engineering, Vol. 135, No. 9, pp. 1179-1189, 2009.
  21. DeJong, J.T., Mortensen, B.M., Martinez, B.C., and Nelson, D.C. "Bio-Mediated Soil Improvement"; Ecological Engineering, Vol. 36, pp. 197-210, 2010.
  22. DeJong, J.T., Yafrate, N.J., DeGroot, D.J., Lo, H.E., and Randolph, M.F. "Recommended Practice for Full-Flow Penetrometer Testing and Analysis"; ASTM Geotechnical Testing Journal, Vol. 33, No. 2, pp. 137-149, 2010.
  23. Armstrong, R.A., DeJong, J.T., and Yafrate, N.J. "Engaging students with diverse learning styles in large, media-intensive engineering classes using an integrated Tablet PC – Classroom Communication System Platform"; Electronic Journal of Geotechnical Engineering, Vol. 15H, pp. 773-794, 2010.
  24. DeJong, J.T., Yafrate, N.J., DeGroot, D.J., Randolph, M.F., and Lunne, T. "Evaluation of Undrained Shear Strength Using Full-Flow Penetrometers"; ASCE Journal of Geotechnical and Geoenvironmental Engineering, Vol. 137, No. 1, pp. 14-26, 2011.
  25. DeJong, J.T., Soga, K., Banwart, S.A., Whalley, W.R., Ginn, T., Nelson, D.C. Mortensen, B.M., Martinez, B.C., Barkouki, T. "Soil Engineering In-vivo: Harnessing Natural Biogeochemical Systems for Sustainable, Multi-Functional Engineering Solutions"; J. Royal Society Interface, Vol. 8, pp. 1-15, 2011.
  26. Tagliaferri, F., Waller, J., Ando, E., Hall, S.A., Viggiani, G., Besuelle, P., and DeJong, J.T. "Observing Strain Localisation Processes in Bio-cemented Sand using X-ray Imaging"; Granular Matter, 2011, Vol. 13, pp. 247-250.
  27. Mortensen, B.M., Haber, M.J., DeJong, J.T., Caslake, L.F., and Nelson, D.C. "Effects of Environmental Factors on Microbial Induced Calcium Carbonate Precipitation"; Applied Microbiology, Vol. 111, Issue 2, pp. 338-349.
  28. Barkouki, T.H., Martinez, B.C., Mortensen, B.M., Weathers, T.S., DeJong, J.T., Spycher, N.F., Ginn, T.R., Smith, R.W., and Fujita, Y., "Forward and inverse bio-geochemical modeling of microbially induced calcite precipitation in 0.5m columnar experiments"; Transport in Porous Media, 2011 (in press).
  29. Weil, M.H., J.T. DeJong, B.C. Martinez, B.M. Mortensen, and J.T. Waller, "Seismic and Resistivity Measurements for Real-Time Monitoring of Microbially Induced Calcite Precipitation in Sand"; ASTM Journal of Geotechnical Testing (in press).
  30. DeJong, J.T., Randolph, M.F., DeGroot, D.J., and Yafrate, N.J. "Closure to Discussion of ‘Evaluation of Remolded Shear Strength and Sensitivity of Soft Clay Using Full-Flow Penetrometers’"; ASCE Journal of Geotechnical and Geoenvironmental Engineering, 2011 (in press).
  31. DeJong, J.T. and Randolph, M.F. "Influence of Partial Consolidation during Cone Penetration on Estimated Soil Behavior Type and Pore Pressure Dissipation Measurements"; ASCE Journal of Geotechnical and Geoenvironmental Engineering (in review).
  32. Westgate, Z., DeJong, J.T., and White, D.J. "Shear Zone Localization During Monotonic and Cyclic Interface Shearing of Sand"; ASCE Journal of Geotechnical and Geoenvironmental Engineering (in review).
  33. Martinez, B.C., DeJong, J.T., Mortensen, B.M., Barkouki, T.H., Ginn, T.R., Hunt, C., Tanyu, B., Major, D. "Experimental Optimization of Microbial Induced Carbonate Precipitation"; ASCE Journal of Geotechnical and Geoenvironmental Engineering (in review).
  34. Mortensen, B.M., Gerhard, R., DeJong, J.T., Weil, M.H., Martinez, B.C., and Pederson, L. "Fabrication, Operation, and Health Monitoring of Bender Elements in Aggressive Environments"; ASTM Journal of Geotechnical Testing (in review).
  35. Dahl, K. R., DeJong, J. T., Boulanger, R. W., Pyke, R., and Wahl, D. "Characterization of an alluvial silt and clay deposit for monotonic, cyclic and post-cyclic behavior."; ASCE J. Geotechnical and Geoenvironmental Engineering (in review).
  36. Dahl, K.R., DeJong, J.T., Boulanger, R.W., and Driller, M.W. "Effects of disturbance and consolidation procedures on the behavior of intermediate soils."; Canadian Geotechnical Journal (in review).
  37. DeJong, J.T., Tibbett, M., and Fourie, A. "Geotechnical Systems that Evolve with Ecological Processes."; J. Royal Society Interface (in review).

Conference Publications

  1. DeJong, J.T., Cargill, P.E., and Frost, J.D. "Measurements of Side Friction Using Textured CPT Friction Sleeves"; Innovations and Applications in Geotechnical Site Characterization, American Society of Civil Engineers, Geotechnical Special Publication, 97, pp. 80-93, 2000.
  2. DeJong, J.T., Frost, J.D., Sacs, M. "Relating Quantitative Measures of Surface Roughness and Hardness to Geomaterial Interface Strength"; Proceedings of GeoEng2000, Sydney, Australia, CD-ROM, 6 pp., 2000.
  3. DeJong, J.T. and Frost, J.D. "Effect of CPT Friction Sleeve Roughness and Position on fs Measurements"; Proceedings of International Conference on In Situ Characterization of Soil Properties, Bali, pp. 637-642, 2001.
  4. Frost, J.D., and DeJong, J.T. "A New Multi-Friction Sleeve Attachment"; Proceedings of 15th International Conference of Soil Mechanics and Geotechnical Engineering, Istanbul, Turkey, pp. 41-44, 2001.
  5. Frost, J.D. and DeJong, J.T. "Physical Evidence of Shear Banding at Granular-Continuum Interfaces"; American Society of Civil Engineers, Engineering Mechanics Conference 2002 Conference, New York, New York, CD-ROM Proceedings, 8 pp., 2002.
  6. DeJong, J.T., White, D.J. and Randolph, M.F. "Effect of Cementation of Cyclic Soil-Structure Interface Behavior"; American Society of Civil Engineers, Engineering Mechanics Conference 2003 Conference, Seattle, Washington, CD-ROM Proceedings, 4 pp., 2003.
  7. DeJong, J.T., DeGroot, D.J., Yafrate, N.J., and Jakabowski, J. "Detection of Soil Layering Using a Miniature Piezoprobe"; Soil Rock America 2003 (12th Panamerican Conference for Soil Mechanics and Geotechnical Engineeering and the 39th US Rock Mechanics Symposium), Boston, MA. Vol. 1, pp. 151-156, 2003.
  8. DeJong, J.T., Howey, D.T., Civjan, S.A., Brena, S.F., Butler, D.S., Crovo, D.S., and Hourani, N. "Influence of Daily and Annual Thermal Variations on Integral Abutment Bridge Performance"; American Society of Civil Engineers, Geo-Trans Conference, Los Angeles, California, pp. 496-505, 2004.
  9. DeJong, J.T., Yafrate, N.J., DeGroot, D.J., and Jakubowski, J. "Evaluation of the Undrained Shear Strength Profile in Soft Layered Clay Using Full-Flow Probes"; 2nd International Site Characterization Conference, Porto, Portugal, Vol. 1, pp. 679-686, 2004.
  10. DeJong, J.T., Fritzges, M.B., Sellers, J.B., and McRae, J.B.     "Pore Pressure Characterization of Geotechnical Experimentation Site Using Multilevel Vibrating Wire Piezometers"; Geo-Quebec Conference, Quebec City, Canada, 8 pp., 2004.
  11. DeJong, J.T. and Christoph, G.G. "Relation of Initial Specimen State and Particle Properties to the Breakage Potential of Granular Soils"; Geo-Quebec Conference, Quebec City, Canada, 7 pp., 2004.
  12. Westgate, Z. and DeJong, J.T. "Particle Crushing at the Soil-structure Interface During Cyclic Loading"; American Society of Civil Engineers, Engineering Mechanics Conference 2004 Conference, Delaware, 5 pp., 2004.
  13. Frost, J.D., Hebeler, G.L., Evans, T.M., and DeJong, J.T. "Interface Behavior of Granular Soils"; 9th ASCE Aerospace Division International Conference on Engineering, Construction and Operations in Challenging Environments, Houston, TX, pp. 65-72, 2004.
  14. Bonczar, C., Breña, S.F., Civjan, S.A., DeJong, J., Crellin, B., and Crovo, D. "Field Data and FEM Modeling of the Orange-Wendell Bridge"; Proceedings: 2005 FHWA Conference: Integral Abutment and Jointless Bridges (IAJB 2005), Baltimore, MD, pp. 163-173, 17-19 March 2005.
  15. Bonczar, C., Breña, S.F., Civjan, S.A., DeJong, J., and Crovo, D. "Integral Abutment Pile Behavior and Design – Field Data and FEM Studies"; Proceedings: 2005 FHWA Conference: Integral Abutment and Jointless Bridges (IAJB 2005), Baltimore, MD, pp. 174-184, 17-19 March 2005.
  16. Yafrate, N.J. and DeJong, J.T. "Detection of Stratigraphic Interfaces and Thin Layering Using a Miniature Piezoprobe"; American Society of Civil Engineers, Geo-Frontiers Conference, Austin, TX. GSP 138, 11 pp., 2005.
  17. DeJong, J.T. and Yafrate, N.J. "Considerations in Evaluating the Remoulded Undrained Shear Strength from Full Flow Penetrometer Cycling"; International Symposium on Frontiers in Offshore Geotechnics, Perth, Australia, 991-997 pp, 2005. 
  18. Fritzges, M.B., DeJong, J.T., and Nusslein, K.  "Biologically Induced Improvement of Loose Sand"; Proc. 8NCEE Conference, Paper #1691, 10 pp., 2006.
  19. Westgate, Z.J. and DeJong, J.T. "Evolution of Sand-Structure Interface Response During Monotonic Shear Using Particle Image Velocimetry";  Geo-Congress Atlanta – Role of Geotechnical Engineering in the Information Technology Age, 6 pp., 2006.
  20. Westgate, Z.J. and DeJong, J.T. "Evolution of Local Soil-Structure Interface Response using Particle Image Velocimetry"; Proc. International Symposium on Geomechanics and Geotechnics of Particulate Media, 6 pp., 2006.
  21. Yafrate, N.J. and DeJong, J.T. "Interpretation of Sensitivity and Remolded Undrained Shear Strength with Full Flow Penetrometers"; Proceedings ISOPE Conference, San Francisco, CA, 6 pp., 2006.
  22. Westgate, Z.J. and DeJong, J.T. "Geotechnical Considerations for Offshore Wind Farm Development and Foundation Optimization"; WindPower 2006 Conference, Pittsburg, PA, 10 pp., June 2006.
  23. Yafrate, N.J. and DeJong, J.T. "Influence of Penetration Rate on Measured Resistance with Full Flow Penetrometers"; ASCE GI GeoDenver Conference, Denver, CO, 10 pp., 2007.
  24. DeGroot, D.J., DeJong, J.T., Yafrate, N.J., Landon, M.M., and Sheahan, T.C. "Application of Recent Developments in Terrestrial Soft Sediment Characterization Methods to Offshore Environments"; Offshore Technology Conference, Paper No. 18737, 2007.
  25. Yafrate, N.J., DeJong, J.T. and DeGroot, D.J. "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), London, pp. 461-468, 2007.
  26. DeJong, J.T., Yafrate, N.J., and Randolph, M.F. "Use of a Full Flow Ball Penetrometer with Pore Pressure Measurements in Soft Clay"; ISC-3: 3rd International Conference on Site Characterization (ISSMGE), Taipei, Huang and Mayne (eds). pp. 269-1275, 2008.
  27. Low, H.E, Randolph, M.F, DeJong, J.T, and Yafrate, N. J. "Variable Rate Field Penetration Tests In Soft Clay"; ISC-3: 3rd International Conference on Site Characterization (ISSMGE), Taipei, Huang and Mayne (eds). pp. 1087-1092, 2008.
  28. Dahl, K.R., Boulanger, R.W., and DeJong, J.T. "Cyclic Strength Testing of Low Plasticity Fine-Grained Soils"; Proceedings of Dam Safety, Association of State Dam Safety Officials, Indian Wells, CA, September, 14 p., 2008.
  29. Jaeger, R.A., DeJong, J.T., and Boulanger, R.W. "Variable Rate Cone Penetration Testing"; United States Society of Dams, Issue 146, 1 p., 2008.
  30. Barkouki, T., Martinez, B., Mortensen, B., Weathers, T., DeJong, J., Spycher, N., Ginn, T., Fujita, Y., and Smith, R. "Forward and Inverse Bio-geochemical modeling of microbially induced calcite precipitation in 0.5m columnar experiments" TOUGH Symposium, Lawrence Berkeley National Laboratory, Berkeley, California, 8 pp., 2009.
  31. DeJong, J. T. and Martinez, B.M. "Bio-Mediated Soil Improvement: Load Transfer Mechanisms at the Micro- and Macro- Scales"; Advances in Ground Improvement: Research to Practice in the United States and China, ASCE GSP No. 188, pp. 242-251, 2009.
  32. DeJong J.T., Martinez, B.C., Mortensen, B.M., Nelson, D.C. , Waller, J.T., Weil, M.H., Ginn, T.R., Weathers, T., Barkouki, T., Fujita, Y., Redden, G., Hunt, C., Major, D., Tanyu, B., "Upscaling of bio-mediated soil improvement"; 17th International Conference on Soil Mechanics and Foundation Engineering, Alexandria, Egypt, Vol. 3, pp. 2300-2303, 2009.
  33. DeJong J.T. "General Report for Technical Session 1D: In-situ Testing"; 17th International Conference on Soil Mechanics and Foundation Engineering, Alexandria, Egypt, Vol. 4, pp. 3278-3287, 2009.
  34. DeJong, J.T. and Westgate, Z. "Linking Micro-Scale Behavior with Measured Global Interface Response"; Research Symposium on the Characterization and Behavior of Interfaces, IOS Press, pp. 24-34, 2010.
  35. Park, D., Kutter, B.L., and DeJong, J.T. "Centrifuge modeling of a sensitive clay slope for simulation of strain softening"; 7th International Conference on Physical Modeling in Geotechnics, pp. 159-164, 2010.
  36. Jaeger, R.A., DeJong, J.T., Boulanger, R.W., Low, H.E., and Randolph, M.F. "Variable penetration rate CPT in an intermediate soil"; 2nd International Symposium on Cone Penetration Testing, 15 pp., 2010.
  37. Dahl, K. R., DeJong, J. T., Boulanger, R. W., and Driller, M. W. "Laboratory testing of an alluvial clayey and silty sand"; United States Society on Dams Annual Conference, Sacramento, CA, April 12-16, pp. 185-199, 2010.
  38. Dahl, K. R., DeJong, J. T., Boulanger, R. W., and Driller, M. W. "Effects of sample disturbance and consolidation procedures on cyclic strengths of intermediate soils"; Fifth International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics and Symposium in Honor of Professor I. M. Idriss, San Diego, CA, 24-29 May, Paper No. OSP1, pp. 1-20, 2010.
  39. Martinez, B., Barkouki, T., DeJong, J.D., and Ginn, T.R. "Upscaling of Microbial Induced Calcite Precipitation in 0.5m Columns: Experimental and Modeling Results"; ASCE Geo-Institute Annual Conference: Geo-Frontiers 2011, Dallas, TX, pp. 4049-4059, 2011.
  40. Al Qabany, A., Mortensen, B., Martinez, B., Soga, K., and DeJong, J.T. "Microbial Carbonate Precipitation: Correlation of S-Wave Velocity with Calcite Precipitation"; ASCE Geo-Institute Annual Conference: Geo-Frontiers 2011, Dallas, TX, pp. 3993-4001, 2011.
  41. Mortensen, B.M., and DeJong, J.T. "Strength and Stiffness of MICP Treated Sand Subjected to Various Stress Paths"; ASCE Geo-Institute Annual Conference: Geo-Frontiers 2011, Dallas, TX, pp. 4012-4020, 2011.
  42. Jaeger, R.A., DeJong, J.T., and Boulanger, R.W. "Cylindrical Cavity Expansion Analysis of Varialbe Penetration Rate Cone Penetration Testing using an Anisotropic Soil Model"; ASCE Geo-Institute Annual Conference: Geo-Frontiers 2011, Dallas, Texas, pp. 2288-2297, 2011.
  43. Armstrong, R.J., DeJong, J.T., and Yafrate, N.J. "Engaging Students with Diverse Learning Styles in Large Geotechnical Engineering Classes"; ASCE Geo-Institute Annual Conference: Geo-Frontiers 2011, Dallas, TX, pp. 2857-2866, 2011.
  44. Thurairajah, A., DeJong, J.T., and Shantz, T. "A Reusable Instrumented Test Pile for Improved Pile Design"; ASCE Geo-Institute Annual Conference: Geo-Frontiers 2011, Dallas, TX, pp. 27-35, 2011.
  45. Bernardi, D., Mortensen, B., DeJong, J.T., and DeJong, M.J. "Bio-Cemented Sandstone Bricks"; IABSE-IASS 2011 Conference, London, UK, September 21-24, (in press).