Researches On The Optimum Joint And Structure Of Cement Concrete Pavement

The higher rigidity, better transferring ability of traffic load and stability of pavement structure characterize cement concrete pavement (CCP). The CCP has the merits of better applicability, more extensive sources of materials and being constructed easily. So the CCP can meet the need of modern transportation well. For the CCP, however, the technique of joint is a real problem of the whole pavement design. Some studies have indicated that the joint is not only the part of being destroyed easily, but also the origin of many damages of pavement such as pumping, angle alternated and broken. The life of CCP will be decreased, when the joint is destroyed badly so as to be dangerous to drive there.This paper's major purpose is about the technique of the joint of CCP. Upon the basis of the technique of the joint in this area, the author analyzed various kinds of the traditional damages of CCP, gave the suggestions of these damages' prediction and treatments, finite element analysis (FEA) was carried out for CCP, including in the analysis of transferring ability of traffic load, modeling, and the finite element analysis of CCP board. According to the research and the numerical results of FEA, this paper proposed the better form of the joint and the pavement structure, as well as the joint materials and corresponding construction techniques, which are more compatible to the CCP of Hubei Province.