Effect of Polyethylene Terephthalate Percentages in Asphalt Concrete by Using Modified Dry Mixing Method

In Vietnam, there are fewer research on the utilization of Polyethylene Terephthalate as an additive in asphalt. To be used widely, it is essential to do specific and completed studies on improving the efficiency of mixing Polyethylene Terephthalate and asphalt binder. The study is database for reference and evaluation of subsequent synthetic Polyethylene Terephthalate studies in Vietnam to propose the solution of mixing Polyethylene Terephthalate and asphalt binder by dried method and find out the optimum content of Polyethylene Terephthalate. The study used Polyethylene Terephthalate granules mixed with asphalt mixture at many rates of the total weight of aggregate. The properties of hot mix asphalt, which maximum aggregate size is 19 mm, are evaluated through laboratory tests such as Marshall stability, indirect tensile strength, and static resilient modulus test.