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With the growth of traffic , the aggravation of the axle load and traffic canalized , global warming brought sustained high temperatures , making the asphalt pavement rutting problem is worsening, affect the vehicle's ride comfort and driving safety , and maintenance difficult , therefore, how to delay and reduce the occurrence of rut , has become the asphalt pavement urgent need to address the problem . In this paper, a systematic analysis of the rutting formation mechanism of influencing factors on the basis of aggregate gradation and the outer doped anti - rutting agent perspective , the study measures to improve the asphalt mixture rutting resistance temperature . First, in the analysis of various grading types of advantages and disadvantages based on the use of grading theory designed the grading curve in the five specifications within the recommended range , and then the five kinds of grading curve of the asphalt mixture Marshall test , rutting test water stability test , combined with five level with the composition of asphalt mixture Bailey method parameter values ??and road performance of a comprehensive contrast , the test results show that the mineral aggregate gradation composition effect on the high temperature properties of the asphalt mixture , AC - 13k -level with range of three graded asphalt mixture has good high temperature rutting resistance , water was also stable , verified by Bailey method also confirmed three graded asphalt mixture material to form a better skeleton structure , but also that the CA value of about 0.45 fluctuations skeleton structure better, therefore , AC - 13K more suitable for use in high temperature and rainy areas . Secondly, the AC - 13 , AC - 16 , AC - 20 three kinds of asphalt mixture asphalt mixture , SBS modified asphalt mixture , mixed with different doses of anti - rutting agent asphalt mixes Marshall test , rutting test , water stability test, low temperature crack resistance , combined with the modification mechanism of the anti- rutting agent to study mixed with anti-rutting and mixed with different doses of anti - rutting agent with the performance of the asphalt mixture , the test results show that mixed anti - rutting agent to improve the high temperature performance of asphalt mixture obvious advantages , the stability of water and low temperature cracking performance has improved to some extent , the outer doped with 0.3 to 0.4% of the anti- rutting agent , asphalt mixture can be more balanced the road performance .
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