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Examination of moisture sensitivity of aggregate–bitumen bonding strength using loose asphalt mixture and physico-chemical surface energy property tests

Liu, Yawen; Apeagyei, Alex K.; Ahmad, Naveed; Grenfell, James; Airey, Gordon

Authors

Yawen Liu

Alex K. Apeagyei alex.apeagyei@nottingham.ac.uk

Naveed Ahmad

James Grenfell

Gordon Airey



Abstract

In this study, the moisture sensitivity of different kinds of aggregates and bituminous binders is examined by comparing the performance between five empirical test methods for loose mixtures – static immersion test, rolling bottle test (RBT), boiling water test (BWT), total water immersion test and the ultrasonic method – with more fundamental surface energy-based test data. The RBT and BWT results showed that limestone aggregates perform better than granite aggregates and that, for unmodified binders, stiffer binders provide better moisture resistance compared with softer binder. Both tests were sensitive to aggregate type, binder type and anti-stripping agent type. Ranking of the mixtures by RBT and BWT was in general agreement with the surface energy-based tests, especially for mixtures that performed worst or best in RBT and BWT. The magnitude of the work of debonding in the presence of water was found to be aggregate type dependent which suggests the physico-chemical properties of aggregates may play a fundamental and more significant role in the generation of moisture damage, than bitumen properties.

Journal Article Type Article
Publication Date Jan 1, 2014
Journal International Journal of Pavement Engineering
Print ISSN 1029-8436
Electronic ISSN 1029-8436
Publisher Taylor & Francis (Routledge)
Peer Reviewed Peer Reviewed
Volume 15
Issue 7
APA6 Citation Liu, Y., Apeagyei, A. K., Ahmad, N., Grenfell, J., & Airey, G. (2014). Examination of moisture sensitivity of aggregate–bitumen bonding strength using loose asphalt mixture and physico-chemical surface energy property tests. International Journal of Pavement Engineering, 15(7), doi:10.1080/10298436.2013.855312
DOI https://doi.org/10.1080/10298436.2013.855312
Publisher URL http://www.tandfonline.com/doi/abs/10.1080/10298436.2013.855312#.UzHTyah_uhM
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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