A sulfur-asphalt paving binder has been developed in which up to 50 percent of the asphalt is replaced by molten sulfur. A specially designed blending unit called a sulfur-asphalt module (SAM) automatically mixes sulfur and asphalt in the correct proportions and at the correct temperature and pumps the blend to a pug mill where it is mixed with aggregate to form paving material. This method conserves hydrocarbons and it provides a market for sulfur removed in increasing amounts from natural gas, crude oil, and other fuels. It also provides road surfaces that have nearly double the strength of conventional pavement and can thus be built thinner. It is also claimed that the pavements are more resistant to climatic change. Other economics include sulfur bridging effects which make it possible to use low-grade local aggregate. A number of test strips have been laid in Ontario, Alberta, and Michigan.

  • Corporate Authors:

    American Chemical Society

    1155 16th Street, NW
    Washington, DC  United States  20036
  • Publication Date: 1978-5-22

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Filing Info

  • Accession Number: 00177145
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 14 1978 12:00AM