SPTC Seminar Series

Attending an SPTC Seminar is an excellent way to stay informed and earn professional development hours. Information on upcoming seminars will be posted when available.

March 16, 2018

Click Here to Register! 

Download Flyer (PDF)

Title: Lessons Learned from Forensic Investigations of Premature Failures and Pavement Rehabilitation Strategies in Texas

Friday, March 16th, 10:30 am-11:30 am
ODOT Commission Room, 200 NE 21st St, Oklahoma City, OK 73105

Presenter: Dar Hao Chen, Ph.D.

ABSTRACT: Forensic investigations of pavement failures are critical, as the information gained can be used to identify the underlying causes of the problem, develop an optimal rehabilitation strategy, and to resolve construction disputes.  Knowledge of the presence and extent of subsurface defects is critical to prevent the problem from reoccurring.  The use of nondestructive testing techniques (NDT) such as GPR and Total Pavement Acceptance Device (TPAD) are well established within the Texas Department of Transportation (TxDOT).  For rehabilitation projects, it is critical to identify weak spots and then to apply localized repairs before placing a structural overlay. A NDT survey in coordination with augering, coring, and DCP testing can rapidly determine the extent and cause of the problem.  This testing provides a comprehensive evaluation of subsurface conditions about the entire project.  These techniques have been used to resolve hundreds of problematic projects and are applicable to a wide range of forensic studies of premature failures and pavement rehabilitation studies. Numerous case studies and lessons learned will be presented in this seminar.  
Dr. Dar Hao Chen joined the Texas Transportation Institute (TxDOT) recently as a Research Associate. Dr. Chen was an APT System Manager and Pavement Engineer at the Texas Department of Transportation for the past 23 years.  He has led hundreds of complicated and controversial forensic and rehabilitation studies. He has served as a panel member for the National Cooperative Highway Research Program and is the Editor in Chief for the Innovative Infrastructure Solutions, Springer and Associate Editor for the Journal of Performance of Constructed Facilities, ASCE. Dr. Chen has published over 160 technical papers in various prestigious journals. He has been invited to speak at national and international conferences and has served on reviewing panels for national and regional organizations. Dr. Chen is co-chair and Secretary General for Geohunan International Conference 2009 & 2011, GeoHubei 2014, GeoChina 2016 and GeoChina 2018 International Conferences. 

Attendees will earn 1 professional development hour (PDH). You must register with your own email to receive your PDH.


Seminar Archive

This archive includes all previous seminars, including PDF presentation files and photos.

12/1/17 Performance Evaluation and Mix Design Aspects of Foamed WMA Containing RAP, Manik Barman, Rouzbeh Ghabchi, Amir Arshadi, Musharraf Zaman, Mohammad Ashiqur Rahman, OU

12/1/17 Selection and Evaluation of Tack Coats in Oklahoma, Rouzbeh Ghabchi, Musharraf Zaman, and Shivani Rani, OU 

11/9/17 Chemomechanical behavior of multiphasic porous media: Conception and formulation, Changfu Wei

11/8/17 Climate and Transportation Seminar Series - Consideration of Climate in Prioritizing Bridge Maintenance and Repair, Royce Floyd, OU

6/30/17 Effect of WMA and Anti-Stripping Additives on PPA-Modified Binder, Rouzbeh Ghabchi, Musharraf Zaman, and Shivani Rani, ODOT, OU

6/30/2017 Applicability of MSCR Grading of Polymer- and RAP-Modified Binders, Rouzbeh Ghabchi, Musharraf Zaman, and Shivani Rani, ODOT, OU

4/18/2017 Climate and Transportation - What's the Big Deal?, Esther Mullens, OU

4/6/2016 Career Opportunities and Leadership Development in Transportation Fields,  Dawn Sullivan, ODOT

4/6/2016 Field Investigation of Spread Slab Beam Bridge Systems and Development of Design Parameters, Mary Beth Hueste, TAMU

12/13/2015 Swelling Clays in Pavement Applications: Their Characterization and Stabilization using Geosynthetics, Jorge Zornberg, UT

11/16/2015 Modeling of Rutting Using the Unified Disturbed State Concept, Chandrakant Desai, University of Arizona

11/13/2015 Accelerated Bridge Construction University Transportation Center, Atorod Azizinamini, FIU

3/12/2015 Fatigue Performance of Asphalt Pavements Containing RAS and RAP, Musharraf Zaman, Rouzbeh Ghabchi, Manik Barman, OU

12/04/2014 Evolution of AASHTO-based Bridge Design, John Kulicki, Modjeski and Masters, Inc.

7/28/2014  Innovative Road Construction in India, Braj Bhushan Pandey, Indian Institute of Technology

4/24/2014  Important Aspects of Chemical Stabilization of Fine-Grained Soils, Amy Cerato, Gerald Miller, OU

4/16/2014  Long Term Bridge Performance Program – An Update, Ali Maher, School of Engineering, Rutgers University

3/18/2014  Temperature Prediction Model of Flexible Pavement in Taiwan, Yu-Min Su, National Central University