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http://dx.doi.org/10.7473/EC.2015.50.3.167

Self-Healing Asphalt Prepared by using Ionic Epoxy Resin  

Lee, Young-Jik (Department of Polymer Engineering, The University of Suwon)
Seo, Jun-Young (Department of Polymer Engineering, The University of Suwon)
Kim, Seo-Yeon (Department of Polymer Engineering, The University of Suwon)
Lee, Seung-Hyun (Department of Polymer Engineering, The University of Suwon)
Hong, Young-Keun (Department of Polymer Engineering, The University of Suwon)
Publication Information
Elastomers and Composites / v.50, no.3, 2015 , pp. 167-174 More about this Journal
Abstract
Anionic epoxy compound was synthesized and added to asphalt aiming to prepare self-healing asphalt. Epoxy-modified asphalt showed excellent modification effect and healing effect as well. The results revealed that with 5% addition of polymer the tensile strength, impact strength and complex shear modulus of the polymer-modified asphalt increased by 65%. 64% and 35%, respectively. It seems that high interaction occurs between polymer and asphalt matrix. Self-healing efficiency of the polymer-modified asphalt based on tensile strength showed 100%, comparing to 79% of straight asphalt. In impact experiment the polymer-modified asphalt showed 99% of healing efficiency, comparing to 77% of straight asphalt. In rheological experiment the polymer-modified asphalt showed 103% of healing efficiency, comparing to 72% of straight asphalt. It appears that the ionic bonding existing in epoxy polymers contributed to high values of self-healing efficiency. The polymer which has high intermolecular force fills the crack of the asphalt, pulling the opponent side each other, and so the original properties were restored.
Keywords
anionic epoxy compound; healing agent; self-healing asphalt; crack healing; healing efficiency;
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