Study On Pavement Performance Of Semi Flexible Material With Rubber Particles

With the increase of the traffic flow and the axle load,the problems of the traditional flexible pavement asphalt concrete and rigid cement concrete pavement can not meet the development needs.Based on the semi flexible pavement was born,the semi flexible pavement structure is a new type of pavement structure,it is porous asphalt concrete based on matrix(void ratio reached 20%～25%),go into the high fluidity and strength to meet the requirements of the formation of composite cement mortar.The semi flexible pavement has the advantages of the flexibility of the cement concrete and the rigidity of the asphalt concrete,which absorbs the advantages of the two traditional pavement.As a kind of material with high elasticity and not sensitive to water and temperature,rubber particles can not only improve the pavement performance but also protect the environment.Therefore,it is of great practical significance and practical value to develop and apply this kind of pavement material.This paper is based on the research at home and abroad,through the indoor test of cement mortar mix ratio of the performance test,and finally determined to meet the relevant requirements of the cement mortar mix proportion.Taking the large void asphalt concrete OGFC--13 as the matrix,the porosity is 24%,and the rubber particles are added into the mixture.Then,the pavement performance of rubber asphalt asphalt semi flexible pavement was studied under the conditions of high temperature stability,low temperature crack resistance,water stability,water holding capacity and so on.The experimental results show that the semi flexible pavement with rubber particles has good application prospect and value.