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Induction healing of fatigue damage in asphalt test samples

Menozzi, Alessandro; Garcia, Alvaro; Partl, Manfred N.; Tebaldi, Gabriele; Schuetz, Philipp

Authors

Alessandro Menozzi

Alvaro Garcia

Manfred N. Partl

Gabriele Tebaldi

Philipp Schuetz



Abstract

To promote asphalt self-healing, asphalt mixture can be heated via induction heating. This technique consists in adding electrically conductive and magnetically susceptible particles (e.g. steel) into asphalt mixture; then, with the help of an induction heating machine asphalt mixture can be heated. When the temperature of asphalt mixture is above a certain threshold (between 30 °C and 70 °C, depending on the type of bitumen), microcracks start self-healing. Induction healing has been previously demonstrated for repairing asphalt mixture test specimens broken in two pieces, but this technique has never been used for repairing microcracks caused by fatigue damage. In this article, the optimum moment and temperature needed to repair asphalt mixture under fatigue damage have been experimentally determined. With this purpose, Marshall test specimens have been damaged through indirect tensile fatigue tests and healed via induction heating. Finally, damage and healing have been quantified through computed tomography scan tests.

Citation

Menozzi, A., Garcia, A., Partl, M. N., Tebaldi, G., & Schuetz, P. (2015). Induction healing of fatigue damage in asphalt test samples. Construction and Building Materials, 74, 162-168. https://doi.org/10.1016/j.conbuildmat.2014.10.034

Journal Article Type Article
Acceptance Date Oct 21, 2014
Online Publication Date Nov 7, 2014
Publication Date Jan 15, 2015
Deposit Date Sep 17, 2018
Journal Construction and Building Materials
Print ISSN 0950-0618
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 74
Pages 162-168
DOI https://doi.org/10.1016/j.conbuildmat.2014.10.034
Keywords Induction heating, Asphalt mixture, Fatigue damage, Self-healing, Steel particles
Public URL http://www.scopus.com/inward/record.url?eid=2-s2.0-84909619786&partnerID=40&md5=49f4fa911d18e4a06286b46759306222
Publisher URL https://www.sciencedirect.com/science/article/abs/pii/S0950061814011787