Material and Structural Interpretation of Dynamic Response Data

Abstract

Load response data collected with the foundation layers to pavements using the light weight deflectometer have been plotted by frequiency and by spacial location. The plots show that the light weight deflectometer is sensitive to aggregate grading and packing and a meaningful interpreation of the data can enable a prediction of the surface deflection pattern with a complete pavement . and can be used to certify foundation layers with a pavement. Using the dynamic surface modulus of grunular materials alyers and soill foundation and the dynamic stfiffness modulus of asphalt layers a "long-life" deflection signature with a flexible pavement construction can be made.