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Performance Based Evaluation of Concrete Material Properties from Climate Change Effect on Wind Speed and Sunlight Exposure Time Curing Condition

기후변화의 풍속과 일조시간에 따른 콘크리트 재료특성의 성능 중심 평가

  • Kim, Tae-Kyun (School of Civil and Environmental Engineering, Yonsei University) ;
  • Shin, Jae-Ho (School of Civil and Environmental Engineering, Yonsei University) ;
  • Bae, Deg-Hyo (Dept. of Civil and Environmental Engineering, Sejong University) ;
  • Kim, Jang-Ho Jay (School of Civil and Environmental Engineering, Yonsei University)
  • 김태균 (연세대학교 사회환경시스템공학부) ;
  • 신재호 (연세대학교 사회환경시스템공학부) ;
  • 배덕효 (세종대학교 토목환경공학과) ;
  • 김장호 (연세대학교 사회환경시스템공학부)
  • Received : 2014.07.29
  • Accepted : 2014.09.03
  • Published : 2014.12.31

Abstract

Currently, due to global warming, occurrences of extreme climate phenomena such as heat wave, heavy snow, heavy rain, super typhoon are continuously increasing all over the world. Due to these extreme climate phenomena, concrete structures and infrastructures are exposed to serious deterioration and damage. However, researches on construction technologies and standards to confront the climate change generated problems are needed presently. In order to better handle these problems, the validity of the present concrete mixture proportions are evaluated considering wind speed and sunlight exposure time based on climate change record in Seoul, Korea. The specimens cured at various wind speed and sunlight exposure time conditions were tested to obtain their compressive and split tensile strengths at various curing ages. Moreover, performance based evaluation (PBE) method was used to analyze the target strength satisfaction percentage of the concrete cured for the curing conditions. From the probabilistic method of performance evaluation of concrete performance, feasibility and usability of current concrete mix design practice for climate change conditions can be evaluated.

현재 전 세계적으로 지구온난화로 인하여 폭염, 폭설, 폭우 및 슈퍼태풍 등과 같은 이상 기후 및 극한 기후현상이 지속적으로 증가 하고 있다. 또한 심각한 자연재해로 콘크리트 구조물 및 사회기반시설의 심각한 손상과 노후화가 발생하였다. 이러한 문제를 해결하기 위해서 현재 국내외적으로 다양한 기후변화에 적합한 시공기술 및 기준에 대한 연구가 활발히 진행되고 있는 실정이다. 그러므로 본 연구에서는 콘크리트 배합에 다양한 풍속과 일조시간의 양생조건에 대한 강도 발현 효과를 평가하고자 한다. 다양한 풍속과 일조시간 조건에서 양생한 실험체에 압축강도와 할렬인장강도 실험을 하였고, 성능 중심 평가(performance based evaluation (PBE))를 수행하여 콘크리트의 다양한 양생조건에 대한 만족도 확률을 평가하였다. 또한 콘크리트의 성능 중심 평가로부터 얻는 결과 값을 바탕으로 콘크리트 배합과 양생조건에 대한 문제점들을 파악 해결하고 대응책을 마련하고자 한다.

Keywords

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