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Sulfer Extended Asphalt

by Sanford P. LaHue, (M.ASCE), Dir.; Office of Highway Operations, Federal Highway Administration, Wash., D.C.,
Frank V. Botelho, Highway Engr.; Engrg. and Traffic Operations, Federal Highway Administration, Wash., D.C.,


Serial Information: Civil Engineering—ASCE, 1981, Vol. 51, Issue 5, Pg. 57-59


Document Type: Feature article

Abstract:

Since the 1973 oil embargo, the Federal Highway Administration has researched and promoted the experimental use of a new pavement binder, sulfur-extended asphalt (SEA). In SEA paving mixes, a portion of the asphalt, typically 30-40 percent by weight, is replaced with elemental sulfur. To date, experimental SEA pavements have been constructed in 17 states and are performing as well as the control asphalt cement sections. The availability of sulfur for SEA is reviewed, as are SEA's properties, mix design techniques, and construction methods. The relative economics of various pavement materials is also examined.

Subject Headings: Asphalt pavements | Seas and oceans | Sulfur | Pavements | Construction methods | Construction materials | Concrete pavements

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