Abstract
An investigation was executed to determine the influence of laboratory aging on moisture susceptibility and elasticity of polyethylene and polypropylene-modified asphalt concrete mixtures (PEMCMs and PPMCMs). The design bitumen content was obtained for dense mixture by the Marshall method using aggregate blends which conformed to the American Standard for Testing and Materials, ASTM (D-3515). Marshall stability, Marshall modulus of stiffness, indirect tensile strength, tensile strength ratio, and resilient moduli of the aged PEMCMs and PPMCMs at temperature of 100 °C and at two aging levels between 48 and 96 h are used to evaluate the performance change of PEMCMs and PPMCMs. The PEMCMs and PPMCMs achieve the ASTM specified limits; they reveal superior durability, elasticity, and adhesive characteristics with higher resistance to permanent deformation and moisture damage.
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