Study on Hair Crack Rubblization of the old Cement Concrete Pavement

摘要

The optimum overlay structure and the better regeneration of the old cement concrete pavement were analyzed by empirical method, which compared the merits and faults of crack-seat and rubblization with the better regeneration to the old cement concrete pavement, then the concept of hair-crack-rubblization (HCR) was put forward, specific parameter standard of HCR was calculated by mechanical method. According to the desired requirement of HCR the hair-crack-rubblization machine was produced by Xi'an Changda Highway Maintenance Technology Co., Ltd. After that concrete realizable control standards of HCR and the optimum overlay scheme were gotten by the construction condition, then the merits of high strength, stable plate, good water-resistant and so on after HCR of the old cement concrete pavement, which combines the merits of crack-seat and rubblization, were showed by the engineering application.