Asphalt Rubber Technology Information Center
Design Methods for Hot-Mixed Asphalt-Rubber Concrete Paving Materials
Author(s):
Chehovits, James G.  
Origin:
Industry  
Date:
1989  
Categories:
Performance  
Key Words:

Summary:
The properties and use of asphalt-rubber materials for various paving and maintenance activities have been well
documented in the literature.  The majority of this literature reports on properties of asphalt-rubber materials (1-12), and
use of asphalt-rubber in stress absorbing membranes (SAM) and interlayers (SAMI) (13-25).  Research studies have
shown that asphalt-rubber materials have significantly modified physical properties when compared to asphalt cement.  
These modifications include increased high temperature modulus, viscosity, and toughness; increased elasticity,
reduced temperature susceptibility, and less age hardening.  In several state and countries abroad, use of asphalt-rubber
in SAM and SAMI applications has become routine construction practice for rehabilitating deteriorated pavements and
extending overlay life.
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