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IPOD Abstract for presentation (Poster or Podium) with a Paper in the Conference Proceedings

Highway Pavements

1666915 - Effects of Heat Capacity and Thermal Conductivity on Longevity and Performance of Rigid Pavements

Tuesday, June 18, 2024
10:40 AM - 11:00 AM ET
Room: 223
Abstract:

As the global climate undergoes significant changes, the impact of temperature fluctuations on critical infrastructure, particularly roadways, becomes a growing concern. Jointed Plain Concrete Pavement (JPCP) is a common choice for road construction, and its performance is inherently linked to its ability to withstand temperature-related stress. This study explores the effects of two key material properties, heat capacity and thermal conductivity, on the performance and pavement slab thickness of JPCP. To assess these effects, a comprehensive investigation was carried out, involving laboratory experiments and numerical simulations with Pavement ME design (PMED) software. The heat capacity and thermal conductivity of paving concrete were characterized, and their influence on the pavement's performance and slab thickness was evaluated. A variety of scenarios were considered to provide a holistic perspective on JPCP performance. The results revealed that the heat capacity and thermal conductivity of the paving concrete play pivotal roles in determining the pavement's response. Pavements with higher heat capacity tend to exhibit improved thermal stability, as they can absorb and dissipate heat more effectively resulting in improved JPCP performance. Similarly, paving concrete with higher thermal conductivity promote efficient heat transfer, which can help reduce temperature differentials within the pavement structure. Understanding the impact of heat capacity and thermal conductivity in paving concrete is essential for designing resilient and sustainable road infrastructure. These findings offer valuable insights for engineers, researchers, and policymakers seeking to enhance the durability and reliability of transportation networks in a dynamically changing climate.

Learning Objectives:

Attendees can expect to learn the following from this session:
  • Upon completion, the participants will be able to define the role of heat capacity and thermal conductivity on the performance of JPCP.
  • Upon completion, the participants will be able to identify the impact of concrete thermal properties on the pavement slab thickness of JPCP.
  • Upon completion, the participants will be able to describe the effects of thermal properties of paving concrete on the design life of JPCP.