Abstract:To solve the problem of fine material shrinkage cracking problem, refining steel slag pavement base materials in Guangxi Beihai steel slag as the research object, by studying the reduction enhancer of components only mixed, mixed strength of steel slag pavement base materials, research, and development of stability of steel slag cement pavement base material is a special reduced enhancer, enhance the strength, inhibit contraction, verify its road performance, By scanning electron microscope (SEM), the action mechanism of shrinkage reduction and reinforcement agent was investigated through the microstructure of pavement base material. The test results show that the optimal cement content in the cement stabilized steel slag mixture is 8%. The mixing ratio of shrinkage reduction and the strengthening agent was desulfurization gypsum:early strength agent:early expansion agent:MgO:silica fume:NaOH= 17:14.5:17:8.5:14.5:28.5, and the optimal mixing amount was 3%. The compressive strength, bending tensile strength, and splitting strength of 3% shrinkage reducing and reinforcing agent are 6.19MPa, 2.13MPa, and 0.93MPa, all of which meet the requirements of the specification. Through the comparative analysis of dry shrinkage and temperature shrinkage between-group C1 (8% cement and 3% shrinkage reduction reinforcing agent) and group D (8% cement only), the addition of shrinkage reduction reinforcing agent can effectively inhibit the temperature shrinkage and dry shrinkage of cement-stabilized steel slag base.