Analysis of FWD Data from Field Test for Existing Cement Concrete Pavement

Based on the measured FWD(Falling Weight Deflectometer) data from the field test of the existing cement concrete pavement of a national highway, this paper analyses the relationships between the values derived from the FWD measurement and the pavement condition data which was collected by means of field visual survey and test. Some qualitative and quantitative methods for obtaining the joint load transfer and pavement stiffness and load bearing capacity of the existing cement concrete pavement slab are discussed.An idea of evaluating the load bearing capacity of overall pavement structure with summation of FWD deflections in center of loading plate is offered.