Laboratory Evaluation of Microsurfacing Bond Strength
Publication: Journal of Materials in Civil Engineering
Volume 34, Issue 2
Abstract
This paper summarizes the results of a study that was conducted to evaluate the influence of different factors on the bond strength between a microsurfacing layer and an existing pavement structure. The considered factors included the tack coat residual application rate and the dilution rate, as well as the residual binder content of microsurfacing mix. To this end, five tack coat residual application rates, two dilution rates, and three different residual binder contents of the microsurfacing mix were evaluated. A new method for preparing and testing samples was developed to measure the microsurfacing mix bond strength using pull-off and torque tests. The results of this study indicated that the microsurfacing samples with tack coat had significantly higher interlayer bond strength values than those without tack coat. The use of a high dilution rate resulted in an excess amount of water, which significantly reduced the interlayer bond strength. The results also indicated that the amount of residual binder content in the microsurfacing mix significantly affected their bond strength with the existing pavement. Thus, the results of this paper indicate that the bonding between the microsurfacing layer and the existing pavement layer is a function of the properties of the microsurfacing mix and the applied tack coat material.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
References
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 34 • Issue 2 • February 2022
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Dec 28, 2020
Accepted: Jun 17, 2021
Published online: Nov 25, 2021
Published in print: Feb 1, 2022
Discussion open until: Apr 25, 2022
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Cited by
- Ramin Khafajeh, Mohsen Shamsaei, Ali Latifi, Babak Amin Javaheri, Michel Vaillancourt, Comprehensive Investigation of Influential Mix-Design Factors on the Microsurfacing Mixture Performance, Journal of Materials in Civil Engineering, 10.1061/JMCEE7.MTENG-15212, 35, 7, (2023).
- Ahmad Al-Hosainat, Munir D. Nazzal, Sk Abu Talha, Sang-Soo Kim, Ala Abbas, Louay Mohammad, A comprehensive laboratory evaluation of the factors affecting the Micro-Surfacing interlayer bond strength, Construction and Building Materials, 10.1016/j.conbuildmat.2022.126538, 323, (126538), (2022).