How to Determine the Stiffness of the Pavementu27s Upper Layer (Base) Based on the Overall Stiffness and the Stiffness of the Lower Layer (Subgrade)

摘要

In road construction, it is important to estimate difficult-measure stiffness of the pavementu27s upper layer based the easier-to-measure overall stiffness and the stiffness of the lower layer. In situations when the overall stiffness is not yet sufficient, it is also important to estimate how much more we need to add to the upper layer to reach the desired overall stiffness. In this paper, for the cases when a linear approximation is sufficient, we provide analytical formulas for the desired estimations.