Comparative Study on Fatigue Performance of High Content Rubber Powder Modified Asphalt Mixture
In order to compare and study the fatigue performance of high content rubber powder modified asphalt mixtures,5 different types of mixture gradation and 3 types of modified asphalt were selected to design 8 types of asphalt mixtures for fatigue testing.The results show that:1)The road performance of high content rubber powder modified asphalt mixture is superior to that of SBS modified asphalt mixture;2)The fatigue performance of 40%rubber powder modified asphalt mixtures with different grading types is generally better than that of 30%rubber powder modified asphalt mixtures,and the fatigue performance advantage shows a trend of first increasing and then decreasing with the increase of strain level;3)Compared to SBS modified asphalt mixtures,rubber powder modified asphalt mixtures have significant advantages in fatigue performance;4)As the nominal maximum particle size increases,the fatigue performance of different grading types of asphalt mixtures with the same amount of rubber powder modified asphalt shows a downward trend,and as the strain level increases,the fatigue life gradually decreases.
high content of rubber powdermodified asphaltaggregate gradationasphalt mixturefatigue performance
NETL
NSTL
万方数据
