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http://dx.doi.org/10.14190/JRCR.2019.7.3.224

Hardening State and Basic Properties Changes According to the Mixture Ratio of MMA Resin Used as a Waterproofing Coating Material in Concrete Bridges  

An, Ki-Won (Convergence Institute of Biomedical Engineering and Biomaterials Program of Architecture, Seoul National University of Science and Technology)
Kang, Hyo-Jin (Convergence Institute of Biomedical Engineering and Biomaterials Program of Architecture, Seoul National University of Science and Technology)
Oh, Sang-Keun (Dept. of Architectural Eng., Seoul National University of Science and Technology)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.7, no.3, 2019 , pp. 224-234 More about this Journal
Abstract
Waterproof layers are installed in civil engineering structures and bridge construction is commonly finished by applying a layer of regular or asphalt concrete above the waterproof layer. However, asphalt materials are susceptible to melting at high temperature due to its superior temperature sensitivity, and this causes the waterproofing material to melt due to the high temperature of the asphalt concrete, thereby increasing the defect occurrence rate due to the thickness reduction. In this study, tensile strength and elongation of hard and soft type of MMA(Methyl Methacrylate) applied to bridges were compared in accordance to standard performance criteria based on different mixture ratios. Results of comparative testing showed that hard MMA resin can display a satisfactory tensile strength, and soft MMA resin displays satisfactory elongation properties, but as the two resin types are separately used, neither types are able to satisfy the standard requirements outlined in KS F 4932. When the amount of the powder exceeds 56.25% of the total amount, voids are generated on the surface after curing and self leveling was impossible and a heterogeneous surface is formed. Furthermore, when the hard resin: soft resin: powder mixture ratio was set to 15g: 85g: 150g. the tensile strength was $1.5N/mm^2$ and the elongation percentage was 133% which satisfy the tensile performance of KS F 4932.
Keywords
Bridge coating material; MMA resin; Mixing ratio; Tensile performance;
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  • Reference
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