A predictive approach of dynamic modulus for characterising Florida hot mix asphalt mixtures
by Enhui Yang; W. Virgil Ping; Yanjun Qiu; Biqing Sheng
International Journal of Forensic Engineering (IJFE), Vol. 2, No. 3, 2015

Abstract: The dynamic modulus is one of the fundamental properties defining the response of asphalt mixtures in a flexible pavement system. It is an essential input of the Mechanistic-Empirical Pavement Design Guide (MEPDG) software for asphalt pavement design. Many studies have been done about the predictive model of dynamic modulus. This paper presents a comprehensive study about developing a predictive approach of dynamic modulus for characterising the asphalt concrete mixtures used in Florida. A laboratory experimental programme was developed to evaluate 20 selected Superpave asphalt concrete mixtures with a range of aggregates and mix designs. Based on the test results and previous models, a predictive E* approach was constructed to characterise the dynamic modulus of the Florida asphalt concrete mixtures. This study could provide a rational approach for State DOT's to have local implementations of the MEPDG with inputs and calibrations that are specific to their region.

Online publication date: Mon, 23-Feb-2015

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