Incorporating Slab Underlying Layer Interaction Into The Concrete Pavement Analysis Procedures

The research project investigated the interaction between the concrete slab and base layer in jointed plain concrete pavements (JPCP) and continuously reinforced concrete pavements (CRCP). The research study performed the following: 1. Reviewed literature characterizing the interaction between the slab and base layer; 2. Identified factors that influence slab-base behavior and pavement performance using full-scale pavement data and analysis methods; 3. Evaluated the AASHTO mechanistic empirical (M-E) models for JPCP and CRCP performance and structural friction models for slab base interaction; and 4. Investigated alternative models and modifications for the AASHTO M through E procedure to better account for the effects of slab base interaction on pavement performance.