Asphalt Rubber Technology Information Center
A Laboratory Evaluation of Rubber-Asphalt Paving Mixtures
Author(s):
Carey, Donald E.  
Origin:
Louisiana  
Date:
June, 1974  
Categories:
Performance  
Key Words:
rubber asphalt, temperature susceptibility, aging characteristics, plasticity, dispersion, pavement mixtures, stripping  
Summary:
Asphalts modified with different rubbers, including devulcanized CRM and other synthetic rubbers, were evaluated in the
laboratory with respect to their physical characteristics.  The data would seem to indicate that an acceptable cement can
be expected, provided the quantity of rubber additive is closely controlled.  Bituminous mixtures were molded using a
Marshall hammer and also the Gyratory Compactor.  Results for the gyratory compacted specimens indicate rubberized
asphalt mixes possessed higher Marshall stabilities, equal or lower flow values, and less tendency to flush or bleed.
© 2015 - Rubber Pavements Association (RPA). All rights reserved.