The purpose of this project was to develop a satisfactory and realistic procedure for determining moisture movement and moisture equilibria in pavement systems and to develop procedures for utilizing this information in pavement design. The specific objectives of this report were to fulfill the requirements of Phases 2 and 3 as follows: 1) Phase 2: Moisture Movement and Moisture Equilibria Studies. 2) Phase 3: Summarize the study findings and make recommendations to sponsoring agencies regarding the practical application of the findings and utilization of the moisture model in pavement design. The data from the field test sites were analyzed and summarized. From the research, procedures for determining and utilizing hydraulic parameters important to predicting moisture movement and moisture equilibria in soils and pavement materials were developed. By use of the field data and moisture model the influence of climate and intrinsic pavement conditions on subgrade moisture content and pavement behavior were analyzed. It was shown that parameters such as precipitation, temperature, time of year, and water table depth affected subgrade moisture content and pavement behaviour. It was indicated that the moisture model provided the capability of predicting moisture content trends and the sensitivity of subgrade soils and pavement materials to various boundary conditions. /FHWA/

  • Corporate Authors:

    University of Illinois, Urbana-Champaign

    Department of Civil and Environmental Engineering
    205 North Mathews Avenue
    Urbana, IL  United States  61801-2352

    Illinois Department of Transportation

    Bureau of Materials and Physical Research
    126 East Ash Street
    Springfield, IL  United States  62704-4766

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Dempsey, B J
  • Publication Date: 1979-9

Media Info

  • Pagination: 111 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00303974
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA-IL-UI-179 Final Rpt., FCP 45C2-161
  • Contract Numbers: IHR-604
  • Created Date: Apr 22 1980 12:00AM