Investigating the Effect of Ethylene Vinyl Acetate and High Density Polyethylene on the Dynamic Properties of Hot Asphalt Mixture

Document Type : Original Article

Authors

1 Assistant Professor, Department of Civil Engineering, Savadkooh Branch, Islamic Azad University, Savadkooh, Iran.

2 M.Sc., Student, Department of Civil Engineering, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran.

3 Assistant Professor, Department of Civil Engineering, University of Science and Technology of Mazandaran, Behshahr, Iran.

Abstract

The production of industrial waste has increased greatly in recent decades due to rapid industrial developments. On the other hand, serious environmental issues have been caused by excessive use of natural resources. Plastic bottles are one of the waste materials that may degrade very slowly and cause the highest level of pollution. Due to the properties of ethylene vinyl acetate and the properties of HDPE, they can be used as bitumen modifiers. Therefore, the current research was conducted with the aim of investigating the effect of EVA in asphalt mixture containing HDPE, to investigate the dynamic characteristics of modified asphalt with optimal use of recycled plastic. The results of dynamic tests of stiffness modulus (at 25°C), fatigue (at 20°C) and Repeated Load Axial (RLA) (at 40 and 60°C) showed that the mixture containing these additives after rest and Loading had good elasticity and resistance. The results of the tests showed that adding HDPE and increasing the amount of EVA additive improved rutting distress, increased fatigue life and resilient modulus of asphalt mixture. The mixing plan containing 4% of HDPE and 3% of EVA was the best mixture to improve the studied properties. Due to the fact that the desired mixture is very sensitive to temperature changes and loses its elasticity at high temperature, the use of two additives (HDPE and EVA) is more desirable in areas with moderate and cold climates.

Keywords

References

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Journal of Transportation Research
Volume 20, Issue 2
April 2023
Pages 325-338

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