EVALUATION OF AGGREGATE SIEVING METHODS FOR HOT-MIX ASPHALTIC CONCRETE DESIGN AND PRODUCTION. INTERIM REPORT

The purpose of this research was to determine: 1)if the use of wet sieving (with its associated additional effort) to replace or supplement dry sieving is justified, based on the additional knowledge gained and problems alleviated, for the design and production monitoring of hot mixes; and 2) if the use of concrete sieves in place of hot-mix sieves for hot-mix design and production monitoring is justified based on the additional knowledge gained and the unified use of the same sieve sizes for both concrete and hot-mix testing. A minimum of 10 dry, wet and extraction sieve analyses were accomplished on 10 different produced hot-mixes for the SDHPT during the summer of 1982. In all, four hot-mixes were sampled from four weigh-batch plants, and six were sampled from four drum-dryer plants. The predominant type of hot-mix sampled was SDHPT Item 340 Type "D". Most of the aggregate combinations had limestone coarse aggregates and siliceous field sand fine aggregates, although one mixture consisted entirely of crushed gravel and another entirely of pit run iron ore.

Media Info

  • Media Type: Digital/other
  • Pagination: 79 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00462300
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA/TX-85/3+285-2, Research Rpt 285-2
  • Contract Numbers: Study 2-9-80-285
  • Files: NTL, TRIS, USDOT, STATEDOT
  • Created Date: Feb 28 1987 12:00AM