Synthesis of Information Related to Highway Practices. Topic 53-18. Moisture Measurement for Pavement Foundations and Slopes

Accurate and timely moisture measurement of soils, aggregates, and recycled materials is critical to properly compacting these materials. There are numerous methods for measuring the moisture content of the soil; some are laboratory-based, and some are done in-situ. The objective of this synthesis is to document state department of transportation (DOT) practices for field and laboratory moisture measurement for pavement foundations and slopes. Information for this study was gathered through a literature review, a survey of state DOTs, and follow-up interviews with selected DOTs. Case examples of three state DOTs provide additional information on practices for moisture measurement. Claudia Zapata and Saleh Alothman, Arizona State University, collected and synthesized the information and wrote the report. The members of the topic panel are acknowledged on page iv. This synthesis is an immediately useful document that records practices that were acceptable within the limitations of the knowledge available at the time of its preparation. As progress in research and practice continues, new knowledge will be added to that now at hand.


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  • Status: Completed
  • Funding: $45000
  • Contract Numbers:

    Project 20-05, Topic 53-18

  • Sponsor Organizations:

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001

    American Association of State Highway and Transportation Officials (AASHTO)

    444 North Capitol Street, NW
    Washington, DC  United States  20001

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Project Managers:

    Gause, Jo

  • Performing Organizations:

    Arizona State University

    660 S. College Ave
    PO Box 873005
    Tempe, Arizona  United States  85287
  • Principal Investigators:

    Zapata, Claudia

  • Start Date: 20211019
  • Expected Completion Date: 20230518
  • Actual Completion Date: 20230518

Subject/Index Terms

Filing Info

  • Accession Number: 01771591
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 20-05, Topic 53-18
  • Files: TRB, RIP
  • Created Date: May 17 2021 10:39PM