Mean Profile Depth Analysis of Field and Laboratory Traffic-Loaded Chip Seal Surface Treatments

This paper presents a laboratory and field study to evaluate the mean profile depth (MPD) parameter that represents the surface texture of chip seal pavements. The 3-D laser profiler is used to determine the MPD values from field pavement sections and field samples tested in the laboratory by the third-scale Model Mobile Loading Simulator (MMLS3). Data obtained from five different field-constructed chip seal sections are used to evaluate the effects of different factors on the MPD of chip seal pavements, including aggregate type, emulsion application rate, field versus MMLS3 traffic loading, and traffic volume. The results presented in this paper suggest: (1) that the chip seal pavements constructed using lightweight aggregate have larger initial MPD values and faster reduction in the MPD as a function of number of wheel passes than those constructed using granite 78M aggregate; (2) that the MPD values from the dryer section drops faster initially and more significantly, resulting in a much smaller ultimate MPD value; (3) that in general the MPD values under the MMLS3 loading are similar to those under the field traffic loading, thus allowing the translation of the laboratory MMLS3 data to the field response; and (4) that the shorter rest periods in the higher traffic volume road retards the recovery of the binder and therefore greater permanent changes in the MPD.

Language

  • English

Media Info

  • Media Type: DVD
  • Features: Figures; Photos; References; Tables;
  • Pagination: 16p
  • Monograph Title: TRB 89th Annual Meeting Compendium of Papers DVD

Subject/Index Terms

Filing Info

  • Accession Number: 01155549
  • Record Type: Publication
  • Report/Paper Numbers: 10-3834
  • Files: TRIS, TRB
  • Created Date: Jan 25 2010 11:57AM