Cement Stabilized Macadam Base Materials Design

Due to many prominent advantages of cement-stabilized aggregate, it has been widely used on china highway construction. However, in course of practical application, there is not an effective solution to solve crack and reflect crack of semi-rigid base especially cement-stabilized aggregate. Some reasons such as deficient road structure design, overload, and unreasonable HMA design can explain the very serious situation of early disease of highway, but more essential reasons are short longevity of semi-rigid base. This essay emphasizes on the fields as follow: design of road structure and parameter of base material; the gradation of cement-stabilized aggregate and its evaluation method; design method of mixture; synthetical performance evaluation based on multi-target; performance of cement-stabilized aggregate after wearing out.This essay selects 4 kinds of gradation; designs 13 kinds of mixture by cubage designing and usual method; carries thought experimentation about cement, flying ash cement and lime flying ash cement stabilized aggregate on the field of performance. The experimentation includes mechanics, anti-crack, scour, anti-froze and wearing out performance. At last, thought synthetical performance evaluation, this essay try to give a proposal about of cement-stabilized aggregate gradation and mixture design method.