A Review of Research on The Performance of Warm Mix Rubber Powder Modified Asphalt Mixture Under Freeze-thaw Cycles

Abstract

The performance of asphalt mixture plays a key role in the service life and driving safety of roads. In the central and western regions of Gansu Province, my country, because the winter lasts for a long time, the ice and snow are not easy to melt, which has a great impact on the performance of road pavement. We often melt snow by spreading deicing salt on the road surface. However, asphalt pavement is in a state of constant alternation of freeze-thaw cycles. At the same time, spreading deicing salt into solution will also cause erosion to the road surface. Therefore, the service life and driving safety of asphalt mixtures have put forward a severe test for the performance of asphalt pavements that have been used for a long time. This paper aims at the influence of freeze-thaw cycles on the performance of asphalt pavement, and changes the performance of asphalt mixtures by adding rubber powder to the mixture. Warm mix rubber powder modified asphalt mixture combines the advantages of warm mix technology and rubber powder modification, and has the advantages of energy saving and emission reduction, cost reduction, and increased utilization of waste tires, providing a reference for the future development direction of this field.