Desert Highway Fiber Asphalt Mixture Pavement Research

The expressway in desert area is not only fit for heavy duty traffic, including the large traffic density, heavy duty, channelized traffic, it also constructed in specialized area and it must confronted with the serious climate. The ordinary asphalt mixture can not fulfill the requirement of pavement, so this paper mixed fiber into the asphalt mixture to modified the all round performances of pavement required and studied the application of fiber asphalt mixture in desert area. The research achievement can improve the pavement performance and extend the lifetime of pavement, and it also provides a suggestive reference and guideline for pavement construction in desert area.This paper analyzes and summarizes the existing research results and studied the influence of type and dosage of the fiber to the pavement performance according to a lot of Marshall test and performance test. Then it analyzes the behavior mechanism of fiber in the asphalt mixture and the influence and effect of fiber to the performance of asphalt mixture, we also compare the lab test to the test road and study and give suggestions of the fiber mixture pavement design method and construction arts.The results of lab test show that the fiber asphalt mixture has excellent performance and can fulfill the requirements of expressway in desert area, it can popularize in expressway in desert area.