Volume List  / Volume 9 (2)



DOI: 10.7708/ijtte.2019.9(2).06

9 / 2 / 198 - 209 Pages


Syed Mubashirhussain - Transportation Division, Department of Civil Engineering, National Institute of Technology, Warangal, Telangana, India -

Venkaiah Chowdary - Transportation Division, Department of Civil Engineering, National Institute of Technology, Warangal, Telangana, India -


The field performance of bituminous roads depends highly upon the rheological properties of the bitumen used. Therefore, it is paramount that the determination of the rheological properties of bitumen binders is done accurately. Determining the time it takes for a specimen to reach the desired test temperature before starting any rheological examination is one such important aspect. This time is known as the time for thermal equilibrium. This study focuses on determining the time it takes for a specimen to achieve the thermal equilibrium. Here, the unaged, rolling thin film oven (RTFO) aged and pressure aging vessel (PAV) aged bitumen binders were subjected to an oscillatory test at 10 rad/s using a Dynamic Shear Rheometer (DSR) and the variation of the complex modulus with time was analyzed. The observed results clearly showed that the test temperature and aging significantly affects the time it takes for a sample to reach the thermal equilibrium.

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The authors gratefully acknowledge the support provided by Prof. J. Murali Krishnan, Department of Civil Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India for providing two different grades of bitumen for this research work.


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