In order to strengthen the construction of permanent pavement and improve the performance of asphalt pavement and extend the service life of pavement,30%rubber powder modified asphalt mixture(ARHM20)was studied.The best oil-stone ratio was determined by Marshall test to be 4.8%,and the Marshall stability was 9.61kN,void fraction was 3.3%,and gross volume density was 2.436g/cm3.Through the rut test,the dynamic stability was 6683 times/mm.The maximum flexural tensile strain was 4456,the flexural tensile strength was 13.45MPa,and the bending stiffness modulus was 3089MPa.Based on the ac-tual project,the high content of rubber powder modified asphalt mixture has good pavement performance,and the research results can be popularized in the industry.
关键词
高掺量/橡胶粉/路用性能/改性机理
Key words
high dosage/rubber powder/road performance/modification mechanism
维普
万方数据