Fatigue Life Of Asphalt Concrete With Rubber Grains
Author(s)
A. D’Andrea & N. Fiore
Abstract
Fatigue life of asphalt concrete with rubber
grains
A. D' Andrea, N. Fiore
Department of Hydraulics, Transportation and Roads,
"La Sapienza " University of Rome, Italy
Abstract
This paper presents some results achieved in a wide research carried out in the
road material laboratory of the Rome University "La Sapienza" to assess the
suitability of a new hot mix asphalt (HMA), containing crumb rubber (particle
size 2-5 mm), as sub-ballast in railways or base layer in road pavements. This
material could be effective in the reduction of vehicular traffic vibrations;
however, crumb rubber is responsible for reducing mechanical characteristics of
the asphalt concrete. The aim of this step of the program here discussed is to
evaluate the influence of kind and content of crumb rubber on bituminous
mixes, regarding fatigue life. The experimental analysis was directed to detect
the initial modulus value, above which this bituminous material will remain
structurally serviceable for a considerable period.
Keywords
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