Abstract
The mechanism of moisture-induced debonding in asphalt mixtures is described using data obtained from pull-off and direct tensile tests of aggregate-mastic bonds and miniature 20 mm diameter cored asphalt mixture specimens, respectively. Moisture conditioning using deionised water was conducted at multiple temperatures for periods of up to 40 days. Analyses of the results led to the development of a novel framework for describing moisture-induced debonding in asphalt mixtures in moisture-susceptible aggregates. Damage models describing debonding as cohesive damage in the bulk asphalt and/or adhesive failure at the aggregate-mastic interface resulting from monotonic tensile loading were derived based on load versus conditioning time. Debonding at the aggregate-bitumen interface was found to be the main mechanism of moisture-damage in the moisture-susceptible acidic aggregates that were tested. The trends in debonding with conditioning time was found to be neither test-mode (pull-off versus direct tension) nor conditioning temperature (20 °C versus 60 °C) dependent which suggest the presence of moisture at the aggregate-bitumen interface is a key factor influencing the mechanism of moisture-induced debonding in asphalt mixtures.
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References
Airey GD, Choi YK (2002). State of the art report on moisture sensitivity test methods for bituminous pavement materials. Road Materials & Pavement Design; 3(4): 355-372
Airey GD, Collop AC, Zoorob SE, et al (2008). The influence of aggregate, filler and bitumen on asphalt mixture moisture damage. Constr Build Mater, 22(9): 2015-2024
Apeagyei AK, Grenfell JRA, Airey GD (2014). Observation of reversible moisture damage in asphalt mixtures. Construction and Building Materials 60 73–80
Apeagyei AK, Grenfell JRA, Airey GD (2015). Influence of aggregate absorption and diffusion properties on moisture damage in asphalt mixtures. RMPD, 16(sup1): 404-422
Horgnies M, Darque-Ceretti E, Fezai H, Felder E (2011). Influence of the interfacial composition on the adhesion between aggregates and bitumen: investigations by EDX, XPS and peel tests. Int J Adhes Adhes, 31 (5): 238–247
Kringos N, Scarpas A, de Bondt A (2008). Determination of moisture susceptibility of mastic-stone bond strength and comparison to thermodynamical properties. Journal of the Association of asphalt Paving Technology, 77: 435–478
Kringos N, Khedoe R., Scarpas A de Bondt A (2011). A new asphalt concrete moisture susceptibility test methodology. In: 90th Annual Meeting of TRB Compendium of Papers DVD TRB
Zhang J, Apeagyei AK, Airey GD, Grenfell JRA (2015). Influence of aggregate mineralogical composition on water resistance of aggregate–bitumen adhesion. Int J Adhes Adhes, 62: 45–54
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Apeagyei, A.K., Grenfell, J.R., Airey, G.D. (2016). Moisture-Induced Debonding Mechanisms in Asphalt Mixtures. In: Chabot, A., Buttlar, W., Dave, E., Petit, C., Tebaldi, G. (eds) 8th RILEM International Conference on Mechanisms of Cracking and Debonding in Pavements. RILEM Bookseries, vol 13. Springer, Dordrecht. https://doi.org/10.1007/978-94-024-0867-6_83
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DOI: https://doi.org/10.1007/978-94-024-0867-6_83
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