Study on structural optimization of latex cement mortar pouring composite pavement based on finite element method

Abstract

Pouring composite pavement is one new type of pavement structure, which has excellent resistance to permanent deformation. However, due to the difference in the properties of cement-based materials and asphalt-based materials, the interfacial adhesion is not sufficient, which makes the pouring composite pavement have cracking defects. The adhesion of mortar modified by latex agent can improve the crack resistance of composite pavement. In this paper, the mechanical behavior of pavement is simulated by finite element method, and the deflection, bending, tensile stress / strain, shear stress / strain and so on of latex cement mortar pouring composite pavement with different thickness structures are calculated and analyzed. The mechanical control index of pouring composite pavement is obtained, and the thickness of semi-flexible pavement structure which meets the mechanical requirements of pavement is optimized at the same time.