Sasobit-modified asphalt binder rheology

Khalid A. Ghuzlan; Mohammad O. Al Assi

doi:10.1061/(ASCE)MT.1943-5533.0001996

Sasobit-modified asphalt binder rheology

Khalid A. Ghuzlan
, Mohammad O. Al Assi

Jordan University of Science and Technology

Research output: Contribution to journal › Article › peer-review

58 Scopus citations

Abstract

This research discusses the effect of Sasobit on asphalt binder rheology and how different percentages of Sasobit affect its performance. Evaluation is performed according to the Superpave test specifications. Tests include the rotational viscosity (RV), the dynamic shear rheometer (DSR), and the bending beam rheometer (BBR). Several rheological parameters are investigated: the dynamic viscosity (η), the complex modulus (G*), the phase angle (γ), the creep stiffness (S), and the m-value. The behavior of modified asphalt binder is investigated at a wide range of temperatures (-6-160°C). Results show an improvement of the asphalt binder performance at high temperatures, but adverse effects on asphalt binder performance at the low temperatures are observed. The optimum percentage of Sasobit is found to be 2% by mass of the asphalt binder; higher percentages are not recommended.

Original language	English
Article number	04017142
Journal	Journal of Materials in Civil Engineering
Volume	29
Issue number	9
DOIs	https://doi.org/10.1061/(ASCE)MT.1943-5533.0001996
State	Published - 1 Sep 2017
Externally published	Yes

Keywords

Asphalt binder
Rheology
Sasobit
Warm mix asphalts

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10.1061/(ASCE)MT.1943-5533.0001996

Cite this

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title = "Sasobit-modified asphalt binder rheology",

abstract = "This research discusses the effect of Sasobit on asphalt binder rheology and how different percentages of Sasobit affect its performance. Evaluation is performed according to the Superpave test specifications. Tests include the rotational viscosity (RV), the dynamic shear rheometer (DSR), and the bending beam rheometer (BBR). Several rheological parameters are investigated: the dynamic viscosity (η), the complex modulus (G*), the phase angle (γ), the creep stiffness (S), and the m-value. The behavior of modified asphalt binder is investigated at a wide range of temperatures (-6-160°C). Results show an improvement of the asphalt binder performance at high temperatures, but adverse effects on asphalt binder performance at the low temperatures are observed. The optimum percentage of Sasobit is found to be 2\% by mass of the asphalt binder; higher percentages are not recommended.",

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AU - Ghuzlan, Khalid A.

AU - Al Assi, Mohammad O.

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AB - This research discusses the effect of Sasobit on asphalt binder rheology and how different percentages of Sasobit affect its performance. Evaluation is performed according to the Superpave test specifications. Tests include the rotational viscosity (RV), the dynamic shear rheometer (DSR), and the bending beam rheometer (BBR). Several rheological parameters are investigated: the dynamic viscosity (η), the complex modulus (G*), the phase angle (γ), the creep stiffness (S), and the m-value. The behavior of modified asphalt binder is investigated at a wide range of temperatures (-6-160°C). Results show an improvement of the asphalt binder performance at high temperatures, but adverse effects on asphalt binder performance at the low temperatures are observed. The optimum percentage of Sasobit is found to be 2% by mass of the asphalt binder; higher percentages are not recommended.

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KW - Rheology

KW - Sasobit

KW - Warm mix asphalts

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DO - 10.1061/(ASCE)MT.1943-5533.0001996

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Sasobit-modified asphalt binder rheology

Abstract

Keywords

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