A MECHANISTIC BASED DESIGN PROCEDURE FOR JOINTED CONCRETE PAVEMENTS

Abstract

This study introduces a mechanistic-based design procedure tailored for jointed concrete pavements, encompassing both jointed plain (JPCP) and jointed reinforced (JRCP) types, primarily developed for Illinois' pavements but adaptable to various regions. The design methodology focuses on preventing transverse cracking through fatigue analysis, which takes into account stresses induced by traffic loads and temperature gradients. Utilizing equivalent damage ratios and considering various environmental factors, material properties, and shoulder types, the procedure calculates fatigue damage to determine pavement longevity. Moreover, the document discusses the influence of joint spacing, reinforced with the goal of mitigating slab cracking by optimizing joint layout, thereby enhancing pavement performance. The procedure is validated through finite element model ILLI-SIAB, allowing for nuanced analysis of pavements under different conditions, including the effect of stabilized subbases on stress and deflection. This comprehensive approach to pavement design is showcased through example calculations, demonstrating its potential to guide the development of more durable concrete pavements with tailored thickness and joint configurations to accommodate specific traffic and environmental conditions. (Abstract generated by AI tool ChatGPT 4)