VALUE PROVED-STATE CHANGES SPECIFICATIONS

Specifications are described which allow construction of processed aggregate base with screenings treated with calcium chloride and pugmill mixed. Plant mix designs and surface treatment designs are described. Plant mix material was placed directly opposite a surface treated section. The water and calcium chloride were measured and pugmill mixed. The calcium chloride was added at the rate of 10 lbs. per ton and water was included to obtain optimum moisture content. Two hours after placement began, the water content was 12 percent on the first laid section and 6 percent on the last. Densities of 161.7 lbs. per cubic foot were recorded. On a shoulder mix of 0.75-inch processed stone, the surface treated material had a density of 146.9 lbs. cu ft. Trials in actual construction are summarized. Traffic can be allowed on the base as soon as it is rolled. If the base is left open to traffic for an extended period light application of calcium chloride will maintain enough surface moisture to keep it moist and tight. A flexible pavement design for using calcium chloride treated base aggregate is outlined, which calls for construction of 6-inch calcium chloride stabilized bases on 10-inch subbases for low-type, two lane bituminous concrete pavements, and 4-inch calcium chloride bases sandwiched between a 10-inch minimum subbase and a 6-inch premixed bituminous base for expressway type 4-lane divided bituminous concrete wearing courses.

  • Availability:
  • Corporate Authors:

    of Structural Engineering

    P.O. Box 688
    Ridgewood, NJ  USA  07451
  • Authors:
    • BENNETT, R A
  • Publication Date: 1965-10

Media Info

  • Features: Photos;
  • Pagination: p. 124-125
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00083798
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 29 1975 12:00AM