Effect of waste plastic synergistic elasticizer on the high and low temperature properties of asphalt
Waste plastics synergistic elasticizer can improve the high and low temperature performance of asphalt,but the compatibility of different waste plastics and elasticizer still needs to be studied.In this paper,waste polyethy-lene(WPE),waste polyvinyl chloride(WPVC).waste polypropylene(WPP)synergistic elasticizer were used to study the effect of different waste plastics and elasticizer on the high and low temperature performance of asphalt.The test results show that with the increase of waste plastic doping,the high temperature performance of asphalt gradually improved,and the low temperature performance first increased and then decreased.In the WPE dosage of 6％,the enhancement of waste plastic on the asphalt high temperature performance was the most obvious.Elasticizer can significantly improve the low temperature performance of asphalt.The addition of elasticizer in plastic-modified asphalt could simultaneously improve the high and low temperature performance of asphalt.What's more,modified asphalt high-temperature performance increased by 30％and low-temperature performance increased by 90％when the dosage WPVC was 4％and the dosage of dioctyl phthalate was 3％.The research results can provide theoretical references for the preparation of waste plastic modified asphalt and the resource utilization of waste plastic.
waste plasticasphaltelasticizerhigh temperature performancelow temperature performance
万方数据
维普
