콘크리트 교면용 도막방수재로 사용되는 MMA 수지의 배합비율에 따른 경화상태 및 기본 물성에 관한 연구 = Hardening State and Basic Properties Changes According to the Mixture Ratio of MMA Resin Used as a Waterproofing Coating Material in Concrete Bridges

다국어 초록 (Multilingual 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/㎟ and the elongation percentage was 133% which satisfy the tensile performance of KS F 4932.

참고문헌 (Reference)

• 1 서재운, "교면포장의 방수 및 보수용 MMA관련 연구" 세종대학교 대학원 2008
• 2 박시범, "교량 교면방수재의 종류에 따른 성능평가 및 검토" 우송대학교 공학대학원 2009
• 3 An, K. W., "Property and tensile strength change based of mixture ratio of MMA resin used for bridge waterproofing" 30 (30): 573-574, 2018
• 4 Kim, Y. K., "Performance of waterproofing system of concrete bridge deck" 18 (18): 10-13, 2006
• 5 Park, H. M., "Characteristics of waterproofing system on concrete bridge deck" 18 (18): 20-25, 2006
• 6 Korea Research Institute for Human Settlements, "Brief No. 403"
• 7 Kim, M.J, "A test of shear adhesion performance composite waterproof sheet applied to the waterproofing layer of bridge deck" 30 (30): 581-582, 2018
• 8 Cho, C. H., "A Case Study on the Application of Waterproofing Structure Using Methyl Methacrylate(MMA) Resin" Seoul National University of Science and Technology 2017