한국건축시공학회지 (Journal of the Korea Institute of Building Construction)

  • 제23권1호
  • /
  • Pages.1-9
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  • 2023
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  • 1598-2033(pISSN)
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  • 2233-5706(eISSN)
한국건축시공학회 (The Korean Institute of Building Construction)
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콘크리트 바탕면의 함수조건이 폴리 우레탄계 방수재 하자에 미치는 영향

Effect of Water-Containing Conditions on Concrete Substrates on Defects of Polyurethane-based Waterproofing Materials

  • Lee, Gun-Cheol (Department of Architectural Engineering, Korea National University of Transportation) ;
  • Kim, Jae-Yeob (Department of Architectural Engineering, Korea National University of Transportation) ;
  • Kim, Young-Min (Department of Architectural Engineering, Korea National University of Transportation) ;
  • Hong, Sung-Rok (Construction Material Center, Korea Conformity Laboratories) ;
  • Kim, Young-Sam (Construction Material Center, Korea Conformity Laboratories) ;
  • Shin, Hong-Chol (Construction Material Center, Korea Conformity Laboratories)
  • 투고 : 2022.11.09
  • 심사 : 2023.01.02
  • 발행 : 2023.02.20
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초록

본 연구에서는 보편적으로 건물의 옥상 등에 사용되는 폴리 우레탄 방수재의 바탕구조물의 함수정도와 시공환경조건에 따른 하자원인을 분석하기 위한 것으로 바탕판의 함수조건에 따른 부착강도, 표면상태를 육안관찰하였고, 온도, 습도의 양생조건에 따라서 방수재 도막의 기계적 성능을 평가하였다. 실험결과 바탕판의 함수상태가 10%이상일 때 도막의 부착이 이뤄지지 않음을 확인하였고, 온습도 조건이 20℃, 80% RH일때는 기초물성이 모두 확보되었으나, 40℃, 60% RH일 때 표면에 기포가 관찰되었으며, 40℃, 80% RH일 때 건조도막 기초물성이 KS F 3211 성능기준이하로, 우레탄 방수재 도포에 있어 시공환경조건의 하자원인 중 바탕판의 함수조건 및 양생 시 절대습도가 중요한 요인임을 확인하였다.

This study is to analyze the cause of the defects in polyurethane waterproofing, a material commonly used on the roof of buildings, and to determine if it has a relation with the curing conditions of humidity and temperature and the moisture content of the base structure. As a result, it was confirmed that the waterproofing coating did not adhere when the moisture content of the base plate was 10% or more. When the temperature and humidity conditions were 20℃ and 80%RH, none of the properties deteriorate but when the temperature was 40℃, 60%RH, air bubbles were formed on the surface, and at 40℃ and 80%RH, the basic properties of the dry coating film were less than the KS F 3211 performance standard.

키워드

과제정보

This research was supported by korea Institute for Advancement of Technology(KIAT) grant funded by the Korea Government(TOTIE)(P0008500, The Competency Development Program for Industry Specialist).

참고문헌

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