Behavior of Polymer-Modified Asphalt (PMA) Concrete Under Cyclic Loadings

This paper present result of a study on the rheological characteristics of polymer-modified asphalt (PMA) concrete under dynamic loading conditions. A number of dynamic creep tests were conducted on the PMA mix samples with two different polymers obtained from waste products. Also a series of resonant column tests were conducted to evaluate the shear modulus and damping values of PMA mixes. The results of the study indicated that polymer modification slightly decreases stiffness and substantially increases damping, making it very attractive material by using for road construction. Even though PMA may cost up to 100 % more than regular asphalt, the advantages such as increased service life of the road or proper waste utilization for a sustainable environment may justify the added cost.