Research On Performance Of Used Rubber And Plastic Asphalt Mixture

In recent years,with the development of economic construction and the continuous improvement of people's living standards,the number of cars has continued to increase,and a large number of used tires and plastics have been hoarded,causing serious “black pollution” problems.The extensive use of rubber modified bitumen,rubber modified bitumen and plastic modified bitumen,to a certain extent,provide solutions to the above problems and alleviate the environmental pollution of used rubber and plastic products.However,so far,many years of research results are on the performance of these several environmental protection materials in a certain aspect of the comparison,based on limited data for comparison,less data on its performance.This article aims to test the rubber-modified asphalt mixture,rubber modified asphalt mixture,and plastic modified asphalt mixture through indoor rutting test,low temperature bending test,freeze-thaw cleavage test,fatigue test,and dynamic modulus test.Its road performance and mechanical properties,and with the commonly used 70 # matrix asphalt mixture,SBS modified asphalt mixture for comparison,in order to obtain a more objective evaluation results.Choose the fine-grain asphalt mixture AC-13,SMA-13,medium-grain asphalt mixture AC-20,coarse-grain asphalt mixture AC-25,4 types of asphalt mixture commonly used for pavement,and prepare rubber and plastic Asphalt mixture,rubber modified asphalt mixture,high-modulus asphalt mixture,SBS modified asphalt mixture,and 70# matrix asphalt mixture,and subjected to high temperature,low temperature,water stability,Comparison of fatigue properties and dynamic modulus.The results show that the different types of used rubber and plastic modified asphalt mixture are different in high temperature,low temperature,water stability and fatigue performance,and their mechanical properties are also quite different,but all make the traditional 70# matrix asphalt.The performance has been greatly improved,and waste rubber and plastic asphalt mixture has a good use prospect.