Effects of Thermal Conductivity of Concrete on Jointed Plain Concrete Pavement’s Performance and Design Slab Thickness

Abstract

This study investigates the influence of thermal conductivity of paving concrete on the performance of Jointed Plain Concrete Pavement (JPCP). The thermal properties of concrete play a crucial role in determining the response of pavements to temperature variations, affecting their durability and structural integrity. Through a comprehensive analysis, this research aims to elucidate the direct relationship between thermal conductivity of paving concrete and JPCP performance. The experimental approach involves varying levels of thermal conductivity in concrete mixtures to observe corresponding changes in pavement behavior. Thermal conductivity alterations are achieved by modifying material composition and incorporating additives. The study evaluates how these changes impact critical factors such as temperature-induced stresses, crack propagation, and overall pavement distress. Results from this investigation contribute valuable insights for optimizing JPCP design and materials selection, with a focus on enhancing pavement performance. By understanding the nuanced effects of thermal conductivity, engineers and practitioners can make informed decisions to improve the resilience and longevity of concrete pavements, especially in regions prone to temperature extremes. The pavement designers should incorporate laboratory tested thermal conductivity data for JPCP design otherwise the use of default data will result in under designed pavement that might fail prematurely. This research has implications for sustainable infrastructure development, offering a foundation for more robust and climate-responsive pavement design practices.