Date of Award
College of Engineering and Computer Sciences
Type of Degree
Dr. James Bryce, Committee Chairperson
Dr. Arka Chattopadhyay
Dr. Gregory Michaelson
The Mechanistic Empirical Pavement Design Guide (MEPDG) is commonly referenced as the state-of-the-practice for the analysis and design of new and rehabilitated pavement assets. The Enhanced Integrated Climatic Model (EICM) incorporated within the MEPDG is a well-recognized and standardized method for estimating temperature profiles in pavements; temperature is a portion of the climate inputs in the MEPDG. Many have already begun to convert atmospheric temperature predictions from externally based climate models into the MEPDG to create robust designs for climate change. As pavement designers and researchers seek robust solutions while formulating resilient pavement designs, it is likely that the EICM will be used to import predicted pavement temperature profiles. Previous research by Bryce & Ihnat (2020) has shown that the heat transfer models within the EICM are fundamentally flawed in a way that permits over-predicted temperatures within pavement profiles. This could possibly have tremendous negative social, environmental, and economic repercussions if the models are not corrected. Increased temperatures in flexible pavements have already been shown to contribute to a variety of deformations and increases in total strain. Total strain has an elastic and plastic component; accounting for total strain in a flexible pavement design are a universal step, regardless of pavement design methodology. After research was concluded, we examined total strain results and temperature distribution results and found evidence that increased temperatures cause measured decreases in pavement layer dynamic moduli. Correspondingly, we found corresponding increases in compressive total strain. Directly proportional to the changes in dynamic moduli and total strains are demonstrated shifting in temperature distributions that show shifting towards higher temperatures over time.
Pavements -- United States -- Analysis.
Pavements -- Climatic factors.
Pavements -- United States -- Design and construction -- Evaluation.
Jarrell, Austin Michael, "Climate resilience: Examination of revised heat transfer models in the enhanced integrated climatic model for pavement temperature prediction" (2021). Theses, Dissertations and Capstones. 1361.