Study on Dynamic Modulus of Waste Plastic Modified Asphalt Mixture Using Waste Plastic Bag Chips

Abstract:

The objective of this study is to investigate the possibility of using waste plastic as an additive to modify asphalt mixtures thereby reducing the waste plastic stream in our environment. High density polyethylene plastic bags obtained from the retail store were shredded into chips and added into asphalt mixtures at the rate of 0% (control sample), 2, 5 and 8% based on binder weight. Three different temperatures of 4, 21.3 and 39.2°C and frequencies ranging from 0.1 to 25 Hz were used in the dynamic modulus test. It was found that most of the asphalt mixtures modified with waste plastic have higher dynamic modulus when compared with the control samples. However, no significant trend on phase angle was found among all the samples tested based on the test results. In this study, it was found that the modified asphalt mixture with 2% waste plastic had the highest dynamic modulus and phase angle. Based on the test results, it was found that plastic modified asphalt mixture will have a better performance under intermediate and high temperature conditions.

• Periodical: Advanced Materials Research (Volumes 261-263)
• Pages: 824-828
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.261-263.824
• Online since: May 2011
• Authors: Qian Zhang, Shu Wei Goh, Zhan Ping You
• Keywords: Asphalt Mixture (AC), Asphalt Pavement, Dynamic Modulus, Modified Asphalt, Waste Plastic

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