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Title |
A Study on the Elastic Restoration Characteristics According to Environmental Resistance Condition of Structural Sealing Finishing Materials
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Authors |
장필성(Pil-Sung Jang) ; 강동원(Dong-Won Kang) ; 홍순구(Soon-Gu Hong) ; 김영근(Young-Geun Kim) ; 김성래(Sung-Rae Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2018.22.1.006 |
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Keywords |
실란트 ; 실링 ; 마감재 ; 탄성복원력 ; 온도 변화 ; 내환경성 ; 구조용 실링재 Sealant ; Sealing ; Finishing materials ; Elastic restoring ; Temperature change ; Environmental resistance ; Structural sealing |
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Abstract |
Recently, The use of the curtain wall method is increasing in construction. The curtain wall construction is widely applied to the exterior wall of the building for shortening construction period and economical efficiency. However, the replacement of deterioration of the weather resistance and structural behavior of the sealing material connecting the curtain wall method and the glass frame is necessary for introduction of the stable curtain wall method and quality improvement in accordance with KS F 4910 standard. In this study, the elastic restoring force test was performed in the external environment. In this study, the deterioration of the sealant was evaluated for structural sealants. In Korea, studies on the variable displacement behavior of structural sealants are lacked. In this study, the reproduced results in laboratory conditions are compared with the deteriorating conditions exposed to the external environment, and they are reflected in the design of sealing materials in the future. According to the results of the study, it was confirmed that the existing structure sealant meets the quality standard of KS F 4910, but in the conditions performed in this study, adhesion failure of the specimen and cracking of the surface occurred. Especially, in the weather resistance test, it is necessary to evaluate the long-term durability performance of the structural sealant used in the curtain wall method by checking the insoluble state of all the test pieces. Therefore, in order to apply a conventional structural sealant to the site, it is necessary to introduce another durability performance evaluation.
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