Mechanistic Evaluation of Test Data From LTPP Jointed Concrete Pavement Test Sections
Primary Topic: Pavement Maintenance
Description: This study was conducted to assess how well some of the existing concrete pavement mechanistic-empirical based distress prediction procedures performed when used in conjunction with the data being collected as part of the national Long-Term Pavement Performance (LTPP) program. As part of the study, appropriate data were obtained from the National Information Management System (NIMS) for the GPS-3 and GPS-4 experiments. Structural analysis was performed for up to 140 axle load configurations for the selected test sections. Then, ILLICON and the Portland Cement Association (PCA) procedures were used to predict fatigue cracking and joint faulting damage, respectively. The computed results were compared with observed values.
This study has shown that, even given the many current limitations in the LTPP database, the LTPP data can be used successfully to develop better insight into pavement behavior and to improve pavement performance.
FHWA Publication Number: FHWA-RD-98-094
Publication Year: 1998