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Thermal Stability Test Evaluation of Applying the Artificial-Crack of Water-Leakage Repair Materials Used in the Maintenance of Concrete Structure

콘크리트 구조물의 유지보수에 사용되는 누수보수재료의 인공 균열을 이용한 온도 안정성 시험평가

  • Kim, Soo-Youn (Department of Convergence Institute of Biomedical Engineering and Bio materials Program of Architecture Doctoral Course, Seoul National University of Science and Technology) ;
  • Kim, Byoung-ll (Department of Civil Engineering, Seoul National University of Science and Technology) ;
  • Oh, Sang-Keun (Department of Civil Engineering, Seoul National University of Science and Technology)
  • 김수연 (서울과학기술대학교 의공학 바이오소재 융합협동과정 건축프로그램) ;
  • 김병일 (서울과학기술대학교 건축학부) ;
  • 오상근 (서울과학기술대학교 건축학부)
  • Received : 2016.09.07
  • Accepted : 2016.09.22
  • Published : 2016.09.30

Abstract

This study is about the method to control the quality of material used to repair leakage and crack of concrete structure and suggests the "Temperature Stability Test Method" as a follow-up study. In the result of performance evaluation for 45 samples of 15 types in 5 series, the temperature stability test showed different material changes including rolling down, volume change, and color change as they are frozen and melt repeatedly in the somewhat extreme conditions at low($-20^{\circ}C$) and high($60^{\circ}C$) temperatures, where 13 samples (approx. 29%) and 32 samples (approx. 71%) showed leakage, respectively, in the permeability test to evaluate leakage. This result shows the enough importance of setting the quality control criteria of leakage repair material currently used to maintain concrete structures considering the temperature conditions, and proves the applicability of the Temperature Stability Test Method as a standard test method to ensure long-term durability of concrete structure.

본 연구에서는 콘크리트 구조물의 누수 균열 보수에 사용되는 재료에 대한 품질관리 방안으로 선행연구에 이어 후속 연구로 "온도 안정성 시험방법"을 제안하였다. 제안된 시험방법을 이용하여 5계열의 15 종류, 총 45개의 시험편을 대상으로 성능 평가한 결과 온도 안정성 시험에서는 저온($-20^{\circ}C$), 고온($60^{\circ}C$)의 다소 가혹 조건의 온도에서 얼었다 녹았다가 반복되면서 흘러내림, 체적변화, 색의 변화 등 다양한 재료 변화가 나타났고, 이에 대한 누수 여부 판별을 위하여 투수 시험한 결과 약 29%인 13개의 시료는 누수 되지 않았고, 약 71%인 32개 시료에서 누수되는 결과가 확인되었다. 이러한 결과는 현재 콘크리트 구조물의 유지보수에 사용되는 누수보수재료에 대한 온도 환경이 고려된 품질관리 기준 설정에 대한 필요성을 충분히 인식 할 수 있었으며, 콘크리트 구조물의 장기 내구성 확보를 위한 본 시험 방법인 "온도 안정성 시험방법"에 대한 표준적인 시험방법으로서의 활용 가능성을 확인하였다.

Keywords

References

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