Asphalt Pavement Distress Nondstructive Testing And Conservation Technology Research

This paper mainly combines with ground-penetrating radar application,wides radar application scope and application of the validity , efficiently discovers accurate highway internal defects found defects, and provids effective technical means and solutions for preventive maintenance work. It raises corresponding preventive measures and conservation programs with appeared subgrade pavement distress,so we can achieve early preventing and control. Finally It can clear up radical diseases and extend the life of the road.High fill embankment of the road appears to more number of vertical cracks,road subsidence,pits and so on ,and this phenomenon becomes more and more serious as an example to the Beijing-Shanghai Expressway. We can exactly gauge the causes for the diseasethese of these high fill sections of the roads,analyze the development of thse diseases,search out effective measures to avoid these radical diseases and carry preventive maintenance out with the use of advanced means.It is an important practical significance for improving road operating environment and reducing operating costs.