Ranking Binder Creep Performance Using the ARRB Elastometer
Publication: Journal of Materials in Civil Engineering
Volume 22, Issue 5
Abstract
This paper discusses a laboratory study used to characterize bituminous binders based on their dynamic creep resistance. Laboratory testing using four different loading regimes on asphalt mixes with six different bituminous binders was undertaken. Creep cycles to 2% accumulated strain were used to define the creep resistance of the asphalt mixes with the various binders. Underlying viscosities of the bitumens were derived using the Australian Road Research Board (ARRB) Elastometer. Marshall stability was measured on the specimens that were prepared using gyratory compaction. Regression plots were prepared that link creep resistance, underlying viscosity, and Marshall stability. It was found that the ARRB Elastometer is able to measure underlying viscosity, which is a reasonable predictor of dynamic creep resistance. Marshall stability was also shown to be a good indicator of dynamic creep resistance. Therefore, simpler tests such as Marshall stability and Elastometer can be used to rank bituminous materials for asphalt mix design purposes in the laboratory.
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Acknowledgments
The writers gratefully acknowledge Mr. R. O’Connor and Mr. M. Janosevic for preparing and testing the asphalt specimens. The helpful insights and suggestions from the Director of Geotechnical Engineering, Mr. V. Wijeyakulasuriya were greatly appreciated by the writers. Thanks are also due to the Queensland Department of Main Roads, for providing financial support for the lead writer during the research.
References
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Published In
Journal of Materials in Civil Engineering
Volume 22 • Issue 5 • May 2010
Pages: 451 - 459
Copyright
© 2010 ASCE.
History
Received: Dec 3, 2008
Accepted: Aug 28, 2009
Published online: Sep 1, 2009
Published in print: May 2010
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