Published: Jan 1993
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Asphalt-rubber is a material developed in the late 1960's and which today is being used on a worldwide basis in numerous types of pavement rehabilitation systems. The cost of the asphalt-rubber as a binder in either spray applications or hot mixed concrete is 3 to 4 times the cost of conventional asphalt cement. Because of these high material costs, many engineers believe these materials are only economical when life costs are considered. Further, some authors have written reports comparing costs of asphalt-rubber systems to conventional rehabilitation methods ignoring the basic applications of these materials. This paper presents various rehabilitation systems and case histories where asphalt-rubber has been shown to be economical on both first cost and life cost analysis.
Asphalt-rubber, pavement systems, asphalt-rubber concrete, seal coats, interlayers, SAM, SAMI, cost analysis
Technical Director, International Surfacing, Inc., Chandler, Arizona
Paper ID: STP19857S