Research On Asphalt-Rubber And Mixture Road Performance

The paper researches the rubber powder, and evaluates the road performance of rubber asphalt and mixture. A large number of experiments show that with the use of rubber asphalt pavement can obtain good road performance, it not only can improve the high temperature performance and low temperature performance of the rubber asphalt pavement, but as well solve the environmental pollution as a result of the accumulation of waste tires and save resources.Analyze the reaction mechanism of rubber asphalt by microscopic analysis. Through domestic and international research, propose the evaluating indicator of rubber asphalt. By means of using theory and experiment we research the softening point, penetration, ductility, viscosity and so on with different mesh number and different proportion of rubber asphalt. The results show that rubber powder can significantly improve the high-temperature and low-temperature performance. For asphalt mixture, the study evaluates the road performance of asphalt rubber mixture (wet process). The high temperature stability, anti-crack resistance in low temperature and resistance to water damage performance can be improved with rubber powder mixed in asphalt mixture in different degrees. The paper verify the evaluating indicators of rubber asphalt through high and low temperature performance of mixture, and suggest the evaluation criterion by combining with evaluation of rubber asphalt performance.Through the research of the rubber asphalt gravel sealing layer, we get the conclusions that it has better results with the use of asphalt rubber at different temperatures (25℃,45℃and 60℃). So it can provide some useful technical guidances for use of rubber asphalt in project.The paper make a contribution to the large-scale promotion and application for the use of rubber asphalt and mixture.