MODELLING THE LINEAR VISCOELASTIC RHEOLOGICAL PROPERTIES OF BASE BITUMENS

Authors

  • Nur Izzi Md Yusoff Nottingham Transportation Engineering Centre (NTEC), School of Civil Engineering University of Nottingham, University Park, NG7 2RD, Nottingham, United Kingdom
  • Marc-Stéphane Ginoux Nottingham Transportation Engineering Centre (NTEC), School of Civil Engineering University of Nottingham, University Park, NG7 2RD, Nottingham, United Kingdom
  • Gordon Dan Airey Nottingham Transportation Engineering Centre (NTEC), School of Civil Engineering University of Nottingham, University Park, NG7 2RD, Nottingham, United Kingdom
  • Mohd Rosli Hainin Department of Geotechnique and Transport Faculty of Civil Engineering Universiti Teknologi Malaysia81310, Skudai, Johor, Malaysia

DOI:

https://doi.org/10.11113/mjce.v22.15798

Keywords:

modelling, complex modulus, phase angle, and creep

Abstract

A laboratory work has been carried out on four different unaged pure bitumens to determine the properties of the 2S2P1D (combination of two springs, two parabolic elements and one dashpot) model. Two types of tests namely the oscillatory dynamic and creep tests, were conducted in order to obtain the rheological data by means of the dynamic shear rheometer (DSR). Then, a method based on inter-conversions function was proposed to model the creep behaviour of base bitumen. It was found that the model which consists of seven parameters simulates in an excellent way the linear visco-elastic properties of the bitumens over a wide range of temperature and frequencies. Furthermore, a simple approximation applied to the 2S2P1D model allows to model the creep data satisfactorily. The goodness of fit statistical analysis showed that the model had a good correlation compare to the measured dynamic modulus data.

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Published

2018-06-04

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How to Cite

MODELLING THE LINEAR VISCOELASTIC RHEOLOGICAL PROPERTIES OF BASE BITUMENS. (2018). Malaysian Journal of Civil Engineering, 22(1). https://doi.org/10.11113/mjce.v22.15798