2019 Volume 10 Issue 2 Special Issue
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A Model of DSR Performance to Evaluate the Rutting Parameter of Bitumen at High Temperatures


Iman Eslami, Mohammadworya Khordehbinan, Sajad Rezaei, Zeinab Eslami
Abstract

Rheological properties of bituminous materials are normally measured using a dynamic shear rheometer (DSR). In this paper, a model of DSR incorporation into the finite element method (FEM), based on prony series, by existent simulation facilities in ABAQUS, is presented. To try this work, the dynamic shear modulus (G* ), phase angle (δ) and G*/sinδ  (to check the superpave rutting indication) of aged and un-aged bitumen and modified bitumen with Polybutadiene rubber (PBR), at high temperatures were measured by DSR and then were calculated using stress-strain values of ABAQUS output. Afterwards, the model and DSR results of G*  and G*/sinδ  were compared. The comparison has shown that the utilization of such numerical analysis technique is useful for the evaluation of rutting parameter of bitumen.


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