Study On The Performances Of Crumb Rubber Modified SMA Asphalt Mixture

With the continuous development of society, the use of cars increased rapidly, followed by the discarded tires are also increasing, the accumulation of discarded tires to take the environmental hazards. To solve this problem, many countries have embarked on the study, discarded tires rubber powder as a modifier, the use of the road in a good way.Through studies of the status quo at home and abroad, through testing, using different meshes of the rubber powder, different content and different base asphalt, discarded tires on the asphalt rubber powder on the modified results and reference laboratory test, combined Engineering practice, the proposed site of the asphalt rubber processing methods.Laboratory determined by the appropriate amount of rubber powder, and in the appropriate amount of mixture under the pilot. SMA from the design experience, through different gradation mixture of porosity, set a goal of grading. With the target level, a mixture of road performance tests. Mixture of performance tests showed that rubber asphalt SMA has a good low-temperature and high temperature performance, yet is a solution to meet the needs of the environment and a good material.