Report No.	AZP31 (jot this number down to order)
Title	Asphalt-Rubber Stress Absorbing Membranes - Field Performance and State-of-the-Art
Author(s)	Morris, Gene R. & McDonald, Charles H., P.E.
Publisher	Arizona DOT
Pub. Date
Pages	68
Keywords
Description	The maintenance of existing pavements is the foremost problem facing engineers today. Paving cracking and subsequent reflection through overlays is directly associated with pavement deterioration and maintenance problems. During the early 1960's a concept was developed utilizing a composition of 25% ground tire rubber reacted with 75% hot asphalt. This process has been utilized in full scale field projects in the form of seal coats, stress absorbing interlayers, and as waterproof membranes. Results from approximately 2000 lane miles of construction clearly show that this basic elastomeric material performs as a waterproof membrane with a high capacity to absorb direct tensile, flexural, and sheering stresses. The paper reviews the performance of the asphalt-rubber seal coats placed since 1967 and will present the state-of-the-art of design and construction.
Postage	$ 8.00 : U.S. $ 8.80 : Canada/Mexico $ 9.60 : Rest of the World

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