Correlation Between Dynamic CBR and Compaction and Bearing Capacity of Pavement Foundation Layers

This paper presents a dynamic California Bearing Ratio (CBR_d) device that can be used on a prepared pavement foundation layer to obtain a certain parameter of the tested material in the laboratory and in situ in a direct and fast way. For the selected natural material (gravel), it is shown that the laboratory CBR_d can be used to estimate the compaction and bearing capacity, because it correlates well with the parameters of the standard and modified Proctor compaction tests. Comparative tests revealed that there is good correlation between the field CBR_d and the deformation modulus, and dynamic deformation modulus values obtained by field tests.