A Synthesis Study of Noncontact Nondestructive Evaluation of Top-down Cracking in Asphalt Pavements

The primary objective of this research study was to conduct an extensive literature review on top-down cracking evaluation studies, prepare a synthesis of findings, and recommend a follow up phase for a pilot study in Mississippi with a candidate technology. The top-down cracking appearing mostly in longitudinal wheel paths on asphalt highway pavements, was first reported in the 1970s in tropical countries, later reported in the 1980s in the United Kingdom, the Netherlands, France and South Africa, followed by field investigations in the late 1990s and 2000s in the United States, several European countries, and Japan. Since then the top-down cracking distress has been identified as the most important distress observed on asphalt highways in many states including Florida, Indiana, Michigan, Washington, Illinois, and Mississippi. Proper and timely maintenance of top-down cracking is critically important for thick asphalt pavements. Therefore, a procedure is needed to expedite field survey of top-down cracking without depending on cores. An existing viable nondestructive and noncontact technology operating at highway speed was not found in this study. Therefore, a problem statement for research need is prepared for a national study through the National Highway Cooperative Research Program (NCHRP).


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 84p

Subject/Index Terms

Filing Info

  • Accession Number: 01516614
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/MS-DOT-RD-13-255, UM-CAIT/2013-01, MS-DOT-RD-13-255
  • Contract Numbers: State Study 255
  • Created Date: Feb 27 2014 10:47AM