A COMPREHENSIVE PAVEMENT EVALUATION SYSTEM: APPLICATION TO CRCP

A continuing study of the performance of CRC pavement was undertaken in an attempt to evaluate and recommend improved design and construction techniques. The evaluation study consisted of three steps: 1) reconnaissance survey; 2) pavement condition survey; 3) detailed field evaluation survey. Results of the condition survey indicated that subbase type, methods of steel placement and steel fabrication, concrete slump and age of the pavement since opened to traffic were major factors in pavement performance. A further investigation was conducted to evaluate the parameters which contributed to CRCP performance in the condition survey. In this phase a field investigation of in-service CRC sections was undertaken. Results of the study show that CRCP failures are a function of a number of interacting variables. Support conditions under CRCP are of particular significance relative to performance. Granular subbases with high stability and good internal drainage have shown good performance.