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Title |
Evaluation of Chemical Resistance Performance of Synthetic Rubber and Cement Based Injection Repair Materials Used in Underground Concrete Structures
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Authors |
김수연(Soo-Yeon Kim) ; 이정훈(Yeon-Sil Lee) ; 송제영(Je-Young Song) ; 김병일(Byoungil Kim) ; 오상근(Sang-Keun Oh) |
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DOI |
https://doi.org/10.11112/jksmi.2017.21.5.148 |
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Keywords |
지하 콘크리트 구조물 ; 화학 저항성 ; 주입형 누수보수재료 ; 합성고무계 ; 시멘트계 Underground Concrete Structure ; Chemical Resistance ; Injection Type Leakage Repair Material |
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Abstract |
In this study, by using the international standards ISO TS 16774, Part 2 Test method for chemical resistance as a quality control method of injection type repair material used for leakage crack of underground concrete structure, the performance requirement against of chemical environment of underground concrete structures for repair materials was tested. For this testing 3 types for each of the 2 classes of repair materials(synthetic rubber, cement), with a total of 9 types repair materials, were selected and examined. As a result, the test results showed that the smallest performance deterioration by the change in the mass was with the synthetic rubber(RG) type as opposed to the cement type system, showing that the synthetic rubber type had the strongest relative resistance to chemical exposure. Furthermore, it is necessary to investigate the material with high resistance to chemical substances and to examine the material which can increase resistance to sodium hydroxide and sodium chloride in cement system. These results can be used as a basic index for the selection of repair materials with the strongest resistance to chemical environment found in concrete structures. In addition, it is expected that the test results derived in this study can be used as reference data that can be reflected in the quality improvement of the maintenance material to be developed later.
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