Experimental Study on Mechanical Properties of High Modulus Asphalt Concrete

Starting from design of composition of high modulus asphalt concrete material,this paper,through the mechanical performance test for asphalt concrete,analyzed the law how low-grade asphalt and additive amount affect the mechanical properties of high modulus asphalt concrete. The result shows that low-grade asphalt may increase mechanical strength of asphalt concrete; the modulus of resilience,cleavage strength and dynamic compressive modulus of asphalt concrete may increase with the increase of additive amount,and when the additive amount reaches 0. 7 % of the mixture amount,the average increment of the modulus of resilience may reach about 50 %; and for the asphalt concrete with additive,the accumulated deformation will reduce to some extent.