Explaining Overlay Tester Results with Digital Image Correlation and Finite Element Analysis

The overlay tester (OT) is a relatively new testing procedure that characterizes the fatigue cracking resistance of asphalt mixtures by evaluating the number of cycles to failure of a specimen. The uncertainty of the results has been a concern to some transportation agencies. A careful experimental evaluation of the OT test protocol reveals the complex stress and strain distributions that should be understood before improving the test. Thus, a study was conducted using the digital image correlation (DIC) and finite element analysis (FEA) methods to analyze the OT testing process and results. The DIC technology can be used to visualize the loading responses of the asphalt specimen and correlate them with the experimental results. The FEA, in addition to predicting the behavior of the hot mix asphalt (HMA), can be used to validate the DIC. Thus, the use of these two methods leads to a better understanding of the OT procedure.

• Record URL:
  • https://doi.org/10.1061/9780784479926.080
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784479926
• Supplemental Notes:
  • © 2016 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Ramos, Estefany
  • Gutierrez, Andrea
  • Tirado, Cesar
  • Stewart, Calvin
  • Abdallah, Imad
  • Nazarian, Soheil
• Conference:
  • 2016 International Conference on Transportation and Development
  • Location: Houston Texas, United States
  • Date: 2016-6-26 to 2016-6-29
• Publication Date: 2016

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 884-894
• Monograph Title: International Conference on Transportation and Development 2016: Projects and Practices for Prosperity

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Deformation curve; Fatigue cracking; Finite element method; Hot mix asphalt; Pavement overlays; Test procedures
• Uncontrolled Terms: Digital image correlation
• Subject Areas: Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 01603214
• Record Type: Publication
• ISBN: 9780784479926
• Files: TRIS, ASCE
• Created Date: Jun 28 2016 4:22PM