EXPERIMENTAL STUDY OF HIGH MODULUS ASPHALT CONCRETE

Asphalt as a typical viscoelastic material,with the temperature sensitivity,in the heavy traffic and high temperature environment conditions,the emergence of a serious early damage,directly affecting the way the use of performance.Therefore,it is necessary to research the high modulus asphalt concrete which has high temperature resistance stability and anti-fatigue performance.This paper investigates the AC-13C coarse aggregate gradation,determined the best optimal asphalt content of different asphalt mixture by testing the volume index of marshal test piece,and contrastive studies pavement performance of asphalt mixture(high modulus asphalt concrete,SBS modified asphalt mixture and base asphalt mixture),including rutting test,bending test at low temperature,the water stability,and the fatigue property test.The results showed that high modulus asphalt concrete has a better pavement performance than both SBS modified asphalt mixture and base asphalt mixture.