In-Depth Investigation of Premature Distresses of Four Ohio SHRP Test Road Sections

The Ohio SHRP Test Road, constructed on U.S. 23 in Delaware County about 25 miles north of Columbus, Ohio, contained forty test sections in the SHRP SPS-1, SPS-2, SPS-8, and SPS-9 experiments. During the summer of year 2002, a forensic study of Sections 390103, 390108, 390109, and 390110 in the SPS-1 experiment was conducted through a series of non-destructive tests, destructive tests, and laboratory tests to determine the underlying cause of premature distresses that had developed in these four pavement sections. Non-destructive testing conducted on each section included falling weight deflectometer, transverse profiling, and Humboldt stiffness measurements. Dynamic Cone Penetration tests were used to determine resilient modulus of the subgrade. Trenches were excavated at locations with various levels of distress to measure transverse layer profiles, to determine the thickness of individual material layers, and to obtain material samples for laboratory testing. The forensic investigation revealed substantial variability in stiffness and high level of moisture in the subgrade under all four pavement sections. Unanticipated high subgrade moisture level was the underlying cause of rutting. Rutting observed in the pavement surface had propagated up from the subgrade without any significant rutting occurring in asphalt concrete layer itself. The top-down longitudinal cracking observed in all test sections was primarily resulted from the segregation of aggregates in the asphalt mixture at the time of construction.

Language

  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; Photos; References; Tables;
  • Pagination: 12p
  • Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

Filing Info

  • Accession Number: 01044014
  • Record Type: Publication
  • Report/Paper Numbers: 07-0063
  • Files: TRIS, TRB
  • Created Date: Feb 8 2007 4:37PM