A Review of Aggregate and Asphalt Mixture Specific Gravity Measurements and Their Impacts on Asphalt Mix Design Properties and Mix Acceptance: TechBrief

Details

• Corporate Creators:
  United States. Federal Highway Administration. Office of Pavement Technology
• Subject/TRT Terms:
  • Aggregates
  • Asphalt mixtures
  • Measurement
  • Mix design
  • Specific gravity
  • Highways
  • Materials
  • I31: Bituminous Binders and Materials
• Publication/ Report Number:
  FHWA-HIF-11-033
• Resource Type:
  Brief
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Federal Highway Administration. Office of Pavement Technology
• Description:
  Current practices for asphalt mix design and acceptance testing rely on volumetric properties. Vital to the calculation of mix volumetric properties are specific gravity measurements of the mixture and the aggregate in the mixture. In essence, the specific gravity measurements are conversion factors which allow conversion of mass percentages to volume proportions/percentages. The accuracy and reliability of the specific gravity measurements are therefore fundamental to the business of building quality hot-mix asphalt (HMA) pavements. This Technical Brief summarizes a critical review of specific gravity measurement methods. The objectives of this review are to summarize problems and issues with current methods, examine possible improvements and/or alternate methods, and identify areas that need further research and development.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/37967/dot_37967_DS1.pdf
• File Type:
  [PDF - 348.68 KB]
• Collection(s):
  Federal Highway Administration
• Main Document Checksum:
  urn:sha-512:cfedf5a9515a90590e3cde2026644ac8aa91692e6215d77ba382e0836e1817b87cb8d687083030de3af15b1cda0512ceddf33a2b700c4c3346b027f0b0a452b6