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Direct Substitution of Sulfur for Asphalt in Paving Materials.

McBee-WC; Sullivan-TA

NTIS: PB 290 113 :23 pages

10007854

Prompted by forecasts of a sulfur oversupply, the Bureau of Mines, U.S. Department of the Interior, is conducting research on potentially large-scale uses of this commodity to extend or replace such construction materials as asphalt, cement, and mineral aggregates. Through these efforts, paving materials have been developed in which sulfur replaces up to 50 pct of the asphalt normally present and which can be prepared and placed with existing mixing and paving equipment. Laboratory properties and design methods for this direct mixing process are described along with properties obtained on small- and large-scale field demonstration projects. These properties are compared with those obtained from control materials prepared without sulfur additions. Monitoring for toxic gases during laboratory and commercial mixing and paving operations is discussed also.

19780101

IH; Report of Investigation;

1978

PB-290113

A03

RI 8303

BCEL;

NTIS: PB 290 113