Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
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A Basic Study to Prepare a Watertightness Evaluation Plan for Sealant Applied to Joints Between Members of PC Structures

PC 구조물 부재간 접합부에 적용되는 실링재의 수밀성 평가방안 마련을 위한 기초적 연구

  • Kim, Tae-Ho (Housing & Building Tech. R&D Institute, DL E&C) ;
  • Kim, Yong-Ro (Housing & Building Tech. R&D Institute, DL E&C) ;
  • Ko, Hyo-Jin (Housing & Building Tech. R&D Institute, DL E&C) ;
  • Park, Jin-Sang (Korea Advanced Material Testing & Reaserch Institute Co., Ltd.) ;
  • Kim, Dong-Bum (Korea Advanced Material Testing & Reaserch Institute Co., Ltd. ) ;
  • Lee, Sang-Wook (Korea Advanced Material Testing & Reaserch Institute Co., Ltd. )
  • Received : 2022.10.30
  • Accepted : 2022.11.19
  • Published : 2023.02.20
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Abstract

This study was conducted to examine the feasibility of preparing a durability evaluation plan in watertightness for sealant applied to a PC structure. To this end, 5 types of sealant that equally satisfy the quality standards of the relevant KS standard were selected and tested. Through this testing, it was found that 3 of the 5 types of sealant showed deterioration in watertightness and durability, such as falling off and cracking from the substrate. For the remaining two types, a visual observation showed no significant changes, but additional analysis, confirmed that there was a large difference in the stress reduction rate of the material. Therefore, based on the above results, the need for a performance review in durability between sealant was confirmed, and based on this, the validity of the durability evaluation plan that can be used in product selection was quantitatively confirmed.

본 연구는 PC공법에 적용되는 실링재를 대상으로 수밀성 측면의 내구성 평가방안 마련의 타당성을 검토하기 위하여 진행하였다. 이를 위해 관련 KS표준의 품질기준에 동일하게 만족하는 실링재 5종을 선정하여 시험을 진행하였으며, 시험결과 5종의 실링재 중 3개 실링재가 바탕면과의 탈락 및 균열 등 수밀성 저하를 나타냈으며, 2종의 경우 육안관찰 상 큰 변화는 없었으나, 추가분석을 통해 소재의 응력 저하율의 차이가 크게 발생하는 것을 확인할 수 있었다. 이에 상기 결과를 근거로 향후 실링재 간 수밀성 측면의 성능검토 필요성을 확인하였으며, 이를 기반하여 제품 선정 시 활용 가능한 수밀성 평가방안의 타당성을 정량적으로 확인하였다.

Keywords

Acknowledgement

This work is supported by the Korea Agency for Infrastructure Technology Advancement(KAIA) grant funded by the Ministry of Land, Infrastructure and Transport(Grant 22ORPS-C158135-03).

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