Interpreting Dynamic Surface Deflections in the Granular Base Layer of the Pavement Structure

摘要

This report presents the results of a follow-up study to further investigate the initial findings of an earlier University of Maryland research project. The principal objective was to explore the consistent lack of agreement between field measured deflections and those computed using elastic-layered theory. During several periods of the year, surface deflections were measured with the FHWA Thumper testing vehicle on three Maryland flexible pavement sections.