Faculty Directory

Richard A. Coffman

Richard A. Coffman

Associate Professor

College of Engineering

(CVEG)-Civil Engineering

Phone: 479-575-7455

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  • Remote Sensing for Geotechnical Engineering Applications
    • Satellite-based Interferometric Synthetic Aperture Radar (SInSAR)
    • Ground-based Real Aperture Radar (GRAR)
  • Deep Foundations
    • Axial and Lateral Capacity of Drilled Shafts
    • Blast Induced Liquefaction
  • Measurement of Soil Properties
    • Field Testing
      • Determination of In-situ Hydraulic Characteristics of Soils and Geosynthetics 
            Two-Stage Borehole Test (Boutwell) 
            Sealed Double Ring Infiltrometer
      • Determination of In-situ Soil Water Characteristic Curves (Volumetric Moisture Content and Soil Suction)
            Time Domain Reflectometry     
            Soil Water Matric Potential
            Remote Sensing  
    • Geotechnical Engineering Laboratory Testing 
          Shear Strength (Triaxial Compression and Extension, Direct Simple Shear) 
          Permeability (Constant Head and Constant Rate-of-Flow) 
          Consolidation (Constant Rate-of-Strain and Incremental Load)
          Dynamic Properties (Resonant Column/Torsional Shear and Bender Elements)
  • Soil Mechanics (Undergraduate)
  • Measurement of Soil Properties (Graduate)
  • Seepage and Consolidation (Graduate)
  • Geo-Environmental Engineering (Graduate)
  • Ph.D., University of Missouri, Columbia Missouri (2009)
  • M.S., The University of Texas, Austin Texas (2003)
  • B.S., University of Wyoming, Laramie Wyoming (2002)

2015 Journal Articles

  • Zhao, Y., Coffman, R.A., (2015). “Back-Pressure Saturated Constant-Rate-of-Strain Consolidation Device with Bender Elements: Verification of System Compliance.” Journal of Testing and Evaluation. Accepted for Publication (In Typesetting).
  • Salazar, S.E., Barnes, A.R., Coffman, R.A., (2015). “Development of an Internal Camera Based Volume Determination System for Triaxial Testing.” Geotechnical Testing Journal. Vol. 38, No. 4, pp. 1-7. doi: 10.1520/GTJ20140249. Link
  • Salazar, S.E., Coffman, R.A., (2015). “Discussion of A Photogrammetry-based Method to Measure Total and Local Volume Changes of Unsaturated Soils During Triaxial Testing by X. Zhang, L. Li, G. Chen, and R. Lytton.” Acta Geotechnica. Vol. 10, Issue 4, pp. 1-4. doi: 10.1007/s11440-014-0346-8. Link
  • Race, M.L., Coffman, R.A., (2015). “Response of Drilled Shaft Foundation Constructed in Redrilled Shaft Excavation Following Collapse.” Deep Foundations Institute Journal. Accepted for Publication (Advance Article Prior to Print).  doi:10.1179/1937524715Z.00000000020. Link 
  • Race, M.L., Coffman, R.A., (2015). “Load Tests on Drilled Shaft Foundations in Moderately Strong to Strong Limestone.” Deep Foundations Institute Journal, Vol. 9, Issue 1. pp. 1-10. doi:10.1179/1937525514Y.0000000004. Link
  • Race, M.L., Bey, S.M., Coffman, R.A., (2015). “Statistical Analysis to Determine Appropriate Design Methodologies for Drilled Shafts Foundations.” Geotechnical and Geological Engineering. Vol. 33, Issue 3, pp. 713-726. doi:10.1007/s10706-015-9854-z. Link
  • Salazar, S.E., Coffman, R.A., (2015). “Consideration of Internal Board Camera Optics for Triaxial Testing Applications.” Geotechnical Testing Journal. Vol. 38, No. 1, pp. 1-11. doi:10.1520/GTJ20140163. Link

Recent Article About the Geotechncial Investigation Associated with the AHTD TRC-1204 Research Project in Foundation Drilling Magazine (January)

Recent Article About the Full-Scale Load Tests Associated with the AHTD TRC-1204 Research Project in Foundation Drilling Magazine (July)

The articles originally appeared in the January 2014 and July 2014 issues of Foundation Drilling magazine, respectively, the official publication of ADSC: The International Association of Foundation Drilling.  Detailed information about the ADSC-IAFD and its technical materials can be found on their website: www.adsc-iafd.com.  Permission for reuse of the articles, on this website, was granted by ADSC-IAFD. 

  • College of Engineering 2013-2014 Outstanding Service to Students in Civil Engineering
  • College of Engineering 2012-2013 Outstanding Researcher in Civil Engineering
  • College of Engineering 2011-2012 Outstanding Teacher in Civil Engineering
  • Outstanding Mentor (University of Arkansas Office of Nationally Competitive Awards) in 2010, 2011, 2012, 2013, 2014 
  • University of Arkansas New Faculty Commendation for Teaching Commitment in 2010, 2011, 2012