Study on fatigue performance of SBS/N-SiO2 composite modified asphalt and its mixtures
The fatigue life of SBS modified asphalt,N-SiO2 modified asphalt,SBS/N-SiO2 modified asphalt and their mixtures are investigated by using linear amplitude scanning test(LAS)and four-point bending fatigue test,respectively,and the corresponding fatigue equations are established.In addition,the correlation equations between the fatigue performance of asphalt and asphalt mixtures were also established.The results showed that the fatigue life of asphalt and its mixtures could be significantly improved by adding SBS/N-SiO2 composites,and 6%N-SiO2+5%SBS was the best modification combination;there was a good linear relationship between the fatigue life of asphalt and asphalt mixtures.
NETL
NSTL
万方数据
