Paul W. Mayne

Brief Biography: 

Professor Paul W. Mayne is an international researcher with a focus on in-situ testing, geotechnical site characterization, foundation systems, and the evaluation of soil & rock properties. Particular interests include the use, conduct, and interpretation of the cone penetrometer, seismic piezocone, and flat dilatometer, evaluation of shallow and deep foundation systems, and ground modification techniques. From 1977-1987, Paul served in geotechnical consulting practice in the Washington DC-Virginia-Maryland region. After receiving a doctorate from Cornell University, he joined the civil & environmental engineering faculty at Georgia Tech in 1990. He served as the Geosystems Engineering Team Leader from 2000 to 2010, 2012-2014, and 2016.

During his residency at GT, Paul served as the chair (2001-2013) of the ISSMGE Technical Committee TC 102 (formerly TC16): Ground Property Characterization by In-Situ Tests ( and later served as ISSMGE Vice President for North America ( With Dr. Peter Robertson, Dr. Mayne hosted and co-edited the two-volume proceedings entitled Geotechnical Site Characterization (ISC-1, 1998) held in Atlanta. In 2000, he co-edited the ASCE GSP No. 97 entitled Innovations & Applications in Geotechnical Site Characterization for the Geo-Institute conference held in Denver. He is the senior author of the National Highway Institute manual on Subsurface Investigations: Geotechnical Site Characterization (2002) and a co-author on the FHWA Geotechnical Engineering Circular (2002) on Evaluation of Soil & Rock Properties and GSP 124 GeoSupport 2004 on foundations. In September 2004, the 2nd Intl. Conf. on Site Characterization (ISC) held in Portugal resulted in the two-volume proceedings: Geotechnical & Geophysical Site Characterization, for which he was a co-editor. Paul served as senior editor for GSP 138 on Site Characterization & Modeling at the 2005 ASCE GeoFrontiers Conference in Austin. Dr. Mayne was selected by the National Academies to prepare the NCHRP Synthesis 368 on the Cone Penetration Test (2007) which is available  He co-edited the proceedings Geotechnical & Geophysical Site Characterization 2008 (ISC-3, Taipei, 2008) and served as host chair and co-editor for two volumes entitled:  Deformational Characteristics of Geomaterials (2008).  In 2009, he prepared GeoEngineering Design Using the CPT for ConeTec. Together with Dr. Peter K. Robertson, Paul co-edited the 3-volume proceedings for the Second International Symposium on Cone Penetration Testing (CPT’10) that was held in Huntington Beach/CA (  He also co-edited the proceedings for the 4th International Conference on Site Characterization (ISC-4) held in Pernambuco, Brazil (2012). Most recently, Paul contributed 4 of the 11 chapters to the new NCHRP 258 Document Subsurface Investigations Manual (2019) published by the National Academies Press for the Transportation Research Board (

Dr. Mayne has delivered international lectures, including a number of invited keynotes presentations, and participated in over 125 continuing education courses.  Paul Mayne is an active member of ASCE, ASTM, TRB, USUCGER, DFI, ADSC, CGS, and ISSMGE and has served as a recent consultant on projects located in the USA, Canada, Australia, Europe, and Asia. He is licensed as a professional registered engineering in Virginia. He is married, has one daughter, and plays bass guitar. 


Last Name: 
Affinity Group / Department: 
Geosystems Engineering
Academic Faculty
Ph.D., Geotechnical Engineering, Cornell University, 1991.
M.S., Geotechnical Engineering, Cornell University, 1977.
B.S., Civil & Environmental Engineering, Cornell University, 1976.
First Name: 
U.S. Patent 7650962 (issued 26 January 2010): GTRC ID No. 2984 entitled "Rotary Actuated Seismic Source and Methods for Continuous Direct-Push Downhole Seismic Testing" was filed September 17, 2004, in the USPTO by M. Quinn, A.V. McGillivray, and P.W. Mayne. ​Note: Licenses awarded to (a) Finite Precision, GA (2011); (b) ConeTec, BC (2012); (c) Gregg Drilling, CA (2014).
Publications (Proceedings): 
Mayne, P.W. (2020). The 26th Széchy Lecture: Use of in-situ geotechnical tests for foundation systems. Proceedings of the Széchy Károly Emlékkonferencia, published by the Hungarian Geotechnical Society, Budapest: 12-73.
Agaiby, S.S. and Mayne, P.W. (2020). Indirect estimation of fines content using the modified CPT material index. Proc. GeoCongress 2020: Modeling, Geomaterials, and Site Characterization, (Minneapolis, GSP 317), ASCE, Reston, VA: 569-582.
Mayne, P.W., Agaiby, S.S., and Dasenbrock, D. (2020). Piezocone identification of organic clays and peats. Proc. GeoCongress 2020: Modeling, Geomaterials, and Site Characterization, (Minneapolis, GSP 317), ASCE, Reston, VA: 541-549
Mayne, P.W. and Sharp, J. (2019). CPT approach to evaluating flow liquefaction using yield stress ratio. Proceedings of Tailings and Mine Waste 2019, Vancouver, Published by Institute of Mining Engineering, Univ. of British Columbia: 655-670.
Mayne, P.W., Paniagua, P., L'heureux, J-S., Lindgård, A., and Emdal, A. (2019). Analytical CPTu model for sensitive clay at Tiller-Flotten site, Norway. Proc. XVII ECSMGE: Geotechnical Engineering Foundation of the Future, Paper 0153, Reykjavik, Icelandic Geotechnical Society:
Ouyang, Z. and Mayne, P.W. (2019). Evaluating rigidity index, OCR, and su from dilatometer data in soft to firm clays. Proc. 16th Pan Am Conference on Soil Mechanics & Geotechnical Engineering (Geotechnical Engineering in the XXI Century, SMIG Cancun), IOS Press, Rotterdam: 286-293. doi: 10.3233/STAL190051
Mayne, P.W. and Agaiby, S.S. (2019). Profiling yield stress and identification of soft organic clays using piezocone tests. Proc. 16th Pan Am Conference on Soil Mechanics & Geotechnical Engineering, (Geotechnical Engineering in the XXI Century, SMIG Cancun), IOS Press, Rotterdam: 220-227. doi: 10.3233/STAL190043
*Niazi, F.S. and Mayne, P.W. (2019). Modeling of shear stiffness reduction from database of axial load tests on pile foundations. Proc. 7th International Symposium on Deformation Characteristics of Geomaterials (IS - Glasgow, Ireland), 2019E3S Web of Conferences Volume. 92, 13002:
Mayne, P.W. (2019). Settlement of 16-story office tower on raft foundation situated on Piedmont residuum. Proceedings GeoCongress 2019: Foundations (8th Intl. Conf. Case Histories in Geotechnical Engineering, Philadelphia, GSP 307), ASCE, Reston/VA: 412-425.
Dagger, R., Dasenbrock, D., Mayne, P.W., and Saftner, D.A. (2019). Traditional and CPT-based foundation designs: a comparative study. Proceedings GeoCongress 2019: Foundations (8th Intl. Conf. Case Histories in Geotechnical Engineering, Philadelphia, GSP 307), ASCE, Reston/VA: 426-434.
Mayne, P.W., Greig, J. and Agaiby, S. (2018). Evaluating CPTu in sensitive Haney clay using a modified SCE-CSSM solution. Proceedings 71st Canadian Geotechnical Conference: GeoEdmonton, Paper ID No. 279, Canadian Geotechnical Society:
Styler, M.A., Mayne, P.W., McGowan, D. and Sharp, J.T. (2018). Predicting changes in static liquefaction susceptibility using cone penetration tests. Proceedings, The Mine Waste and Tailings Conference, Session 10, Paper 41, Brisbane:
Mayne, P.W. and Dasenbrock, D. (2018). Direct CPT method for 130 footings on sands. Innovations in Geotechnical Engineering: (Proc. IFCEE, Orlando, GSP 299 honoring Jean-Louis Briaud), ASCE, Reston, VA: 135-146.
Mayne, P.W. and Peuchen, J. (2018). Evaluation of CPTU Nkt cone factor for undrained strength of clays. Proc. 4th Intl. Symposium on Cone Penetration Testing (Delft), CRC Press/Balkema: 423-430.
Ouyang, Z. and Mayne, P.W. (2018). Calibrating NTH method for ′ in clayey soils using centrifuge CPTu. Proc. 4th Intl. Symposium on Cone Penetration Testing (Delft), CRC Press/Balkema: 491-498.
Agaiby, S.S. and Mayne, P.W. (2018). Evaluating undrained rigidity index of clays from piezocone data. Proc. 4th Intl. Symposium on Cone Penetration Testing (Delft), CRC Press/Balkema: 65-72.
Niazi, F.S. and Mayne, P.W. (2018). Deep foundation analysis from cone penetrometers – a reappraisal. IFCEE'18: Installation, Testing, and Analysis of Deep Foundations (GSP 294: Proc. Intl. Conf. Deep Foundations & Equipment Expo, Orlando), ASCE, Reston, VA: 53-62.
Agaiby, S.S., Adelakun, A., Rish, I.D. and Mayne, P.W. (2018). Geotechnical load factored resistance design (LFRD) calculations of settlement and bearing capacity for shallow bridge foundations. IFCEE'18: Advances in Geomaterial Modeling and Site Characterization (GSP 295: Proc. Intl. Conf. Deep Foundations & Equipment Expo, Orlando), ASCE, Reston, VA: 431-441.
Kootahi, K. and Mayne, P.W. (2018). A two-fold empirical approach for estimating the preconsolidation stress in clay deposits. Proceedings 4th GeoShanghai 2018 International Conference: Multi-physics Processes in Soil Mechanics and Advances in Geotechnical Testing, Springer: 391-399.
Mayne, P.W. (2017). Stress history of soils from cone penetration tests. 34th Manual Rocha Lecture, Soils & Rocks, Vol. 40 (3), Sept-Dec., Brazilian Society for Soil Mechanics, Saö Paulo: 203-218.
Mayne, P.W., Styler, M., Woeller, D.J. and Sharp, J. (2017). Identifying contractive soils by CPT material index for flow liquefaction concerns. Proceedings GeoOttawa 2017: 70 Years of Canadian Geotechnics and Geoscience, Canadian Geotechnical Society:
Job Title: 
Professor Emeritus
Research Interests: 
In-situ testing
Site characterization
Geotechnical parameter identification
Foundation systems
Soil properties determination
Geostatic stress state
Ground improvement by dynamic compaction and plasma arc vitrification
Publications (Articles): 
Ouyang, Z. and Mayne, P.W. (2020). Effective stress friction angle of normally-consolidated and overconsolidated intact clays from piezocone tests. Geotechnical Engineering Journal of the SEAGS and AGSSEA, Vol. 51, No. 2 (June): 1-6. (Special issue honouring Prof. Harry Poulos).
Ouyang, Z. and Mayne, P.W. (2020). Variable rate piezocone data evaluated using NTH limit plasticity solution. ASTM Geotechnical Testing Journal. https//
DiBuö, B., D'Ignazio, M., Selãnpaã, J., Länsivaara, T. and Mayne, P.W. (2019). Yield stress evaluation of Finnish clays based on analytical CPTu models. Canadian Geotechnical Journal:
Agaiby, S.S. and Mayne, P.W. (2019). CPT evaluation of yield stress in soils. Journal of Geotechnical & Geoenvironmental Engineering 145(12):
Tuttle, M.P., Hartleb, R., Wolf, L. and Mayne, P.W. (2019). Paleoliquefaction studies and the evaluation of seismic hazard. GeoSciences 2019, 9, 311 MDPI: doi:10.3390/geosciences9070311
Mayne, P.W., Cargill, E. and Miller, B. (2019). Geotechnical characteristics of sensitive Leda clay at Canada test site in Gloucester, Ontario. AIMS Geosciences 5(3), American Institute of Mathematical Sciences: 390-411. DOI: 10.3934/geosci.2019.3.390.
Ouyang, Z. and Mayne, P.W. (2019). Modified NTH method for assessing effective friction angle of normally consolidated and overconsolidated clays from piezocone tests. Journal of Geotechnical & Geoenvironmental Engineering 145(10),
Ouyang, Z. and Mayne, P.W. (2018). Effective stress parameters of clays from DMT. ASTM Geotechnical Testing Journal, September, Vol. 41, No. 5: 851-867: doi.10.1520/GTJ20170379.
Agaiby, S.S. and Mayne, P.W. (2018). Interpretation of piezocone penetration and dissipation tests in sensitive Leda Clay at Gloucester Test Site. Canadian Geotechnical Journal, 55(12): 1781-1794:
Ouyang, Z. and Mayne, P.W. (2018). Effective friction angle of clays and silts from piezocone. Canadian Geotechnical Journal. 55(9): 1230–1247;
Agaiby, S., Ouyang, Z., and Mayne, P.W. (2018). Helical probe tests in residual soils of the Appalachian Piedmont. Geomechanics & Geoengineering: An Intl. Journal. Vol. 13 (3): 217-225. Taylor & Francis Group, London.
Publications (Books): 
Uzielli, M. and Mayne, P.W. (2019). Probabilistic assignment of effective friction angle of sands and silty sands from CPT using quantile regression. Georisk: Assessment & Management of Risk for Engineered Systems and Geohazards 13(4): 272-275. DOI: 10.1080/17499518.2019.1663388
Rix, G.J., Mayne, P.W., Bachus, R.C., et al. (2019), NCHRP Manual on Subsurface Investigation, Web Document 258, National Cooperative Highway Research Board, Transportation Research Board, Washington, DC: 373 pages.
Saftner, D., Mayne, P.W., and Dagger, R. (2018). Cone Penetration Test Design Guide for State Geotechnical Engineers, Report No. 2018-32, Minnesota Dept. of Transportation, St. Paul, MN: 225 p.
Tuttle, M.P., Wolf, L.W., Dyer-Williams, K., Mayne, P.W. (2018). Paleoliquefaction studies in moderate seismicity regions with a history of large events. NUREG Document CR-7257, Office of Nuclear Regulatory Research, Washington DC: 445 pages.
Mayne, P.W. and Styler, M. (2018). Soil Liquefaction Screening Using CPT Yield Stress Profiles. Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290, Proc. GEESD-V, Austin), ASCE, Reston, VA: 605-616.
Tuttle, M., Wolf, L., Mayne, P.W., Dyer-Williams, K., and Lafferty, R. (2018). Guidance Document: Conducting Paleoliquefaction Studies for Earthquake Source Characterization, Report NUREG/CR-7238, Division of Engineering, U.S. Nuclear Regulatory Commission Washington, DC 20555: 191 pages. Download:
26th Szechy Lecture, Hungarian Geotechnical Society, Budapest (14 Feb 2020)
21st Robert L. Schiffman Lecture, Civil & Environmental Engineering, Cornell University (05 Nov. 2019):
Cross-USA Lecture (2018-2019) awarded by ASCE Geo-Institute (May 2018 to May 2019): total 36 talks:
26th Spencer Buchanan Lecture, Texas A&M University, Bryan, TX (30 November 2018):
34th Manuel Rocha Lecture, Portuguese Geotechnical Society, Lisbon (11 October 2017):
Opening Keynote Lecture: 3th Bolivian International Conference on Deep Foundations, Univ. Santa Cruz (27-29 April 2017).
Keynote Lecture on In-Situ Testing: Chicago ASCE Geo-Institute Section, Univ. Illinois - Chicago (05 May 2017).
14th Nonveiller Lecture, Croatian Geotechnical Society, Berislavićeva 6, 10000 Zagreb; held at the University of Zagreb, (5 Oct. 2016).
Paul W. Mayne selected as "GeoLegend" - ASCE GeoStrata magazine (May - June 2016; pp 22-28).
Keynote Lecture: 5th International Conference on Site Characterization (ISC-5), Jupiters Resort, Gold Coast, Australia (08 Sept 2016).
Keynote Lecture: In-situ geocharacterization of soils in the year 2016 and beyond. XV Pan American Conf. on Soil Mechanics & Geotechnical Engineering, Buenos Aires (Nov. 2015)
Editor's Choice: Canadian Geotechnical Journal paper by F. Niazi and P.W. Mayne (November 2014):
Hal Hunt Lecture, 39th Deep Foundations Institute Conference, Atlanta Marriott Marquis (Oct 2014):
The James Hoover Distinguished Lecture, 38th Geotechnical Conference, Iowa State University, 10 April 2014
The 12th Jennings Lecture given in Capetown, Durbin, and Pretoria, South African Institution of Civil Engineers (SAICE), 4-6 February 2014:
The 16th George F. Sowers Lecture, ASCE Georgia Geotechnical Section, Atlanta, GA (07 May 2013)
Keynote Talk: Shaking the Foundations of GeoEngineering Education, Univ. Ireland, Galway: 04 July 2012
Keynote Speaker: 2012 Nordic Geotechnical Meeting, Copenhagen: 09 May 2012.
2012 Ardaman Lecture: University of Florida, Gainesville, 10 April 2012: "Advanced Geotechnical Site Testing"
2012 State-of-the-Art: “Requirement of multi‐channel in‐situ tests for routine geotechnical site characterization” ASCE GeoCongress (25-29 March 2012), Oakland, CA:
2010 Opening Keynote - Overview of CPT Regional Reports - International Symposium on Cone Penetration Testing (CPT'10), Hyatt Resort, Huntington Beach CA (09-13 May 2010):
2009 State-of-the-Art (SOA-1) Lecture: Geomaterial Behavior & Testing, 17th International Conference on Soil Mechanics & Geotechnical Engineering (ICSMGE), Alexandria, Egypt - 05 - 10 October 2009:
2009 Michael W. O'Neill Lecture - University of Houston during the annual CIGMAT Conference (06 March 2009). Center for Innovative Grouting, Materials, and Testing:
2007 Cross-Canada Lecture (Fall) - Canadian Geotechnical Society, National Research Council of Canada, Ottawa; (Delivered 14 presentations visiting 12 cities in 2 weeks; December 2007):
2006 James K. Mitchell Lecture delivered during GeoShanghai International Conference (June 2006
Appreciation Award, USUCGER Board Service, November 2001.
Certificate of Appreciation for Ten Years of Dedicated Service, April 2000, Georgia Tech.
Interdisciplinary Research Area(s): 
Resilient Infrastructure Systems