Authors
Abstract
This study is the second stage of the paper “Study the Effect of Rubber Silicon
on Physical Properties of Asphalt Cement”. This study took the effect of additives on
asphalt mixture performance.
Asphalt mixture has been designed by Marshall method for determining the
optimum asphalt content and geophysics properties of mix according to ASTM (D-
1559 ). Rubber silicon at different percentage (1%, 2%, 3% and 5%) was added to
asphalt binder and three specimens of asphalt rubber silicon mixture (ARSM) are
prepared and evaluating according to Marshall method. Diametric tensile creep test
ASTM (D-1075) at 60 Co used to evaluating permanent deformation and modulus of
elasticity for ARSM.
The study shown that the Rubber-Silicon has more effects increasing the
marshal stability, air voids, and reducing the flow and bulk density compared with the
original mix.. Increase the flexibility properties of the mix and this appear from
reducing the permeate deformation at test temperature (60C), the reduction percent
is about (30 to 70)%
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