Research On Determination For Cement Concrete Pavement Void And Grouting Treatment

When the cement concrete pavement appears diseases of void ,etc, maintenance is not promptly, the technology of maintenance is not standard, it will be make the result of that the pavement diseases which have an important influence on pavement life and vehicles' security operation spread out quickly. Therefore, we have the necessity to study the technology for cement concrete pavement void-contorl to enable its effective government to the void and enhances the functional performance of the road.The most advanced equipment of non-destructive inspection of pavement is the Falling Weight Deflectometer and the pavement radar testing system presently. The research is mainly based on these two kinds of equipment to develop and apply the void determination methods at home and abroad. Through the radar and FWD determines on the spot,the article which make a comparison on the method of angle ,FWD and the radar criterion for the accuracy of void determination accuracy, has carried on the revision to the included angle law, and proposed the reasonable value of deflection difference criterion of slab angle (flange), based on summarize void decision method which is commonly used presently.Grouting is an effective treatment to cement concrete pavement void, this paper based on motar consistency,compressive strength test, combining theoretical research results, proposed mortar mix, grouting point and void test method. it can guide the grouting works.