Research on Crack Resistance of Semi-flexible Pavement Materials

Semi-flexible pavement has been widely used in China's road construction due to its excellent rutting resistance. Due the large difference volume stability between matrix asphalt mixture and cement mortar, internal stress of semi-flexible material is concentrated cracking likely occur. To explore influence different Influencing factors on resistance materials. This paper orthogonal design method mix ratio ordinary mortar. On this basis, admixtures (silica fume, emulsified asphalt, water-based epoxy resin) were added prepare special Then, using mortar type, porosity, aggregate type as influencing factors, article studied his crack Tests show that have varying degrees pavement. The effect porosity low temperature greatest, followed by types, lowest type. Enhancing flexibility enhancing elastoplasticity are conducive improving low-temperature performance pavements.