Gray Mullins
Gray Mullins

Department of Civil & Environmental Engineering

4202 E. Fowler Avenue ENG-030
University of South Florida
Tampa, FL 33620-5350
Phone: (813) 974-5845; Fax: (813) 974-2957


  • Ph.D., Civil Engineering, University of South Florida, Tampa.  April 1996.
  • M.S., Civil Engineering, University of South Florida, Tampa. August 1990.
  • B.S., Civil Engineering, University of South Florida, Tampa. April 1988.
  • A.A., Manatee Junior College, Bradenton, Florida.  May 1983..
  • Foundation Load Testing
  • Foundation Rehabilitation
  • Structural and Geotechnical Instrumentation
  • Quality Assurance of Drilled Shafts
  • Post Grouted Drilled Shaft Design and Construction
  • Professor, University of South Florida, 2009 - present
  • Associate Professor, University of South Florida, 2002 - 2009
  • Assistant Professor, University of South Florida, 1996 - 2002
  • Grad. Instructor & Research Assistant, University of South Florida, 1992 - 1996
  • Adjunct Instructor, University of South Florida, 1990 - 1992
  • Teaching Assistant, University of South Florida, 1988 - 1990
  • Research Assistant, University of South Florida, 1989 - 1990
  • Staff Engineer at Greiner Inc, Tampa, 1988 - 1989
  • Registered Profession Engineer, State of Florida #52725 (1998 – Present)
  • American Society of Civil Engineers, Member
  • Deep Foundation Institute, Member
  • American Concrete Institute, Member
  • American Society of Testing Materials, D18-11 Committee
  • Association of Drilled Shaft Contractors, Technical Affiliate Member
  • Academy of Inventors
  • Charles Pankow Award for Innovation, ASCE’s OPAL Award Gala, Washington, DC, March, 2015, “Thermal Integrity Profiler.”
  • Ben C. Gerwick Award for Innovation in Design and Construction of Marine Foundations, Deep Foundations Institute, received in Tarrytown, NY August, 2014
  • C. William Bermingham Award for Innovation “Thermal Integrity Profiler,” Deep Foundations Institute,  received in Phoenix, AZ, October, 2013.
  • Construction Innovation Forum Nova Award Winner, Construction Users Round Table, received in Tucson, AZ, November, 2013.
  • Mullins, G., Sen, R. and Johnson, K. (2016). “Post-Tensioned Pile Splice Part I: Concept Development,” PCI Journal, accepted.
  • Pai, N., Gualtero, I., Alvi, A., Sen, R. and Mullins, G. (2016). “Prioritization Strategy for Replacing Deteriorating Deck Panel Bridges”, ASCE Journal of Bridge Engineering, Published online 1/28/16; 10.1061/(ASCE)BE.1943-5592.0000886
  • Mullins, G. (2015). "Construction QA/QC Methods for Post Grouting Drilled Shafts." J. Perform. Constr. Facil. , 10.1061/(ASCE)CF.1943-5509.0000827 , 04015085.
  • Gualtero, I., Alvi, A., Pai, N, Sen, R., Mullins, G. (2015). “Deterioration Model for Precast Deck Panel Bridges”. TRB 94th Compendium of Papers, Paper No 15-2832, 26 pages
  • Habegger, M.L, Dean M.N, Dunlop, J.W.C, Mullins, G, Stokes, M, Huber, D.R,Winters, D. and Motta, P.J, (2014). “Feeding in Billfishes: Inferring the Role of the Rostrum from a Biomechanical Standpoint,” Journal of Evolutionary Biology (accepted).
  • Mullins, G., Spears, L. and Swanson, C. (2014). “Dynamic Replacement of Soft Soils for Roadways,” ASCE Journal of Geotechnical and Geoenvironmental Engineering, (in review).
  • Mullins, G. (2013). “Advancements in Drilled Shaft Construction, Design and Quality Assurance: The Value of Research,” International Journal of Pavement Research and Technology, vol. 6 No. 2, pp 93-99
  • Fernandez, J., Sagues, A. and Mullins, G. (2013). “Investigation of Stress Corrosion Cracking Susceptibility of High Strength Stainless Steels for Use as Strand Material in Prestressed Concrete Construction in a Marine Environment,” NACE International, Corrosion 2013 Conference & Expo, Paper No. 2686.
  • Alvi, A., Gualtero, I., Sen, R. and Mullins, G. (2012). “Repair of Construction-Related Deterioration in Precast Deck Panel Bridges”. Transportation Research Record, 2292, Issue 1, pp. 104-112.
  • Winters, D. and Mullins, G. (2012). “Thermal Integrity Profiling of Concrete Deep Foundations,” Proceedings Geo-Construction Conference / ADSC Expo 2012,  San Antonio, TX, pp. 155-165.
  • Mullins, G., Likins, G. E., Beim, G (2012). Método de Perfilagem Térmica para Avaliação da Integridade de Fundações Moldadas In Loco. Cobramseg 2012; XVI Congresso Brasileiro de Mecânica dos Solos e Engenharia Geotécnica: Pernambuco, Brazil.
  • Mullins, G., Likins, G., Beim, G., and Beim, J. (2012), “AVALIAÇÃO DA INTEGRIDADE DE FUNDAÇÕES MOLDADAS IN LOCO PELO MÉTODO DE PERFILAGEM TÉRMICA,” Proceedings of the 7th Seminar on Special Foundations Engineering and Geotechnics, Sao Paulo, Brazil, June 17-20, pp.
  • Sen, R., Mullins, G., Aguilar, J. and Winters, D. (2011) “Advances in Corrosion Repair of Piles Using FRP”. ACI-SP for FRPRCS 10, April.

Curriculum Vitae

Geotechnical & Structural Engineering Research Website