Comparison of Dynamic Modulus Assignments for Isparta State Highways According to Mechanistic-Empirical Pavement Design Method

Mechanistic-Empirical Pavement Design Method (MEPDM) determines the necessary pavement thickness for given design inputs and deformations in pavement by combining the parameters of mechanical modeling and observations of pavement performance through the pavement design life. To examine various distresses including cracking, rutting and roughness in MEPDM, pavement dynamic modulus (E*) which is a function of age, temperature, rate of loading, and mixture properties, such as aggregate air voids, gradation, binder stiffness and binder content needs to be determined. For this, there are three levels of analysis in MEPDM. In Level 3, there is no need for laboratory tests, and there are prediction models to assign the dynamic modulus. These models can implement time-dependent analysis of pavement. In this study, statistical climate data analysis of 20 years including 1995–2014 period of Isparta province was examined. Then, the prediction models were used to determine the dynamic modulus master curves of Isparta state highways, and these master curves were compared.