Waste sulphur, shale, hard clay, and old pavement are currently being field tested to fit the asphalt industry. A new asphaltic mix has been developed in which sulphur replaces half the asphalt binder normally used in highway construction. One overlay and one full depth strip were placed in a technique which involved homogenizing hot asphalt and molten sulphur without additives immediately before adding the blend to the aggregate. In another process, sulphur is piped into the plant pugmill after mixing of aggregates and asphalts. Synthetic aggregates are being produced by crushing shale and sintering it to expand and harden it. Expansive clays such as montmorillonite are being similarly treated. Compressed garbage, dipped in heavy asphaltic bath is being used as a patching compound. Composted refuse has been successfully utilized as filler in basic pavement mixes. Preparation of the mix and test results on pavements are described. Worn-out asphalt pavement has been successfully utilized in preparing new surfaces. Details are outlined of such a reparing project in Las Vegas. Broken concrete is being tested as aggregate for asphaltic concrete. The utilization of low-cost locally available aggregates in Illinois is described.

  • Corporate Authors:

    Construction Digest, Incorporated

    Box 603, 101 East 14th Street
    Indianapolis, Indiana,   United States  46206
  • Publication Date: 1975-3-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00084300
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 22 1975 12:00AM