CONTROL OF AC COMPACTION USING AN END-RESULT SPECIFICATION. FINAL REPORT

This report is a summary of the California Department of Transportation's development of test procedures for determining the density and relative compaction of asphalt concrete (AC) and end-result specifications for the compaction of AC pavements. The test method utilizes the backscatter mode of nuclear density gages currently in use by Caltrans. These gages were found to be reliable for determining the densities of layers 0.15 ft, or more, thick. The specification is based upon a direct comparison between the density of the inplace pavement and laboratory-compacted samples of the same material. Test strips are not required. Attempts to modify test procedures and to redesign a nuclear gage for testing layers less than 0.15 ft thick are discussed also.

• Supplemental Notes:
  • This study has been conducted in cooperation with the Federal Highway Administration, under the research project entitled, Asphalt Concrete Compaction Study.
• Corporate Authors:

  California Department of Transportation

  Transportation Laboratory
  5900 Folsom Boulevard
  Sacramento, CA  United States  95819

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Alexander, M L
• Publication Date: 1985-3

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 99 p.

Subject/Index Terms

• TRT Terms: Asphalt concrete; Compaction; Density; Measurement; Nuclear gauges; Pavement layers; Pavements; Specifications; Test procedures; Thickness
• Old TRIS Terms: Density measurement
• Subject Areas: Construction; Highways; Materials; Pavements; I52: Construction of Pavements and Surfacings;

Filing Info

• Accession Number: 00457712
• Record Type: Publication
• Report/Paper Numbers: FHWA-CA-TL-85-08
• Contract Numbers: F78TL04
• Files: TRIS, USDOT, STATEDOT
• Created Date: Aug 31 1987 12:00AM