Abstract:Mechanical strength and fatigue properties of cement stabilized gravel produced by vibration compaction method(VTM CSG) were studied. The strength criteria of VTM CSG against fatigue failure was proposed based on the load response of pavement, mechanical and fatigue properties of VTM CSG as well as Miners theory of fatigue accumulation. The results show that the mechanical properties(unconfined compressive strength; splitting strength and compressive resilient modulus) of VTM CSG enhance linearly with the increase of cement content, and increase nonlinearly with the increase of curing age. The VTM CSG with skeleton dense structure shows better mechanical properties. The growth equation of VTM CSG strength can accurately describe the characteristics of strength growth. When the test conditions were limited, the mechanical index relationship equation can be used to predict the other mechanical strengths. The fatigue equation of VTM CSG is put forward, and the fatigue properties of skeleton dense gradation is better than that of suspension dense gradation under high stress level. The compressive strength and splitting strength criteria of VTM CSG against fatigue failure are proposed, which are correlated with pavement structure and layer material properties and service life. The goal of structure material integrated control of VTM CSG base fracture is realized.