Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
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An Experimental Study on the Applicability of Mechanochromic Sensors for Monitoring Tensile Strain of Concrete Materials

콘크리트 재료의 인장변형 모니터링을 위한 메카노크로믹 센서의 활용 가능성에 관한 실험적 연구

  • Pyeon, Su-Jeong (Department of Architectural Engineering, Chungnam National University) ;
  • Choe, Gyeong-Chol (Department of Building Research, Korea Institute of Civil engineering and Building Technology) ;
  • Kim, Hong-Seop (Department of Building Research, Korea Institute of Civil engineering and Building Technology) ;
  • Kim, Gyu-Yong (Department of Architectural Engineering, Chungnam National University) ;
  • Nam, Jeong-Soo (Department of Architectural Engineering, Chungnam National University)
  • Received : 2021.11.18
  • Accepted : 2021.12.02
  • Published : 2021.12.20
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Abstract

In this study, a basic experiment was conducted to examine the possibility of using mechanochromic sensors to monitor the health of construction structures. The strain and color variation characteristics of the mechanochromic sensor according to the type of finish of the concrete material were investigated. As a result, it was confirmed that the strain and color variation reactivity of the mechanochromic sensor increased as the tensile strain of the concrete specimen increased. In addition, the difference in the finishing environments of concrete, urethane, epoxy, water-based paint and oil-based paint did not affect the deformation and discoloration characteristics of the mechanochromic sensor.

본 연구에서는 메카노크로믹 센서의 건설 구조물 건전도 모니터링 활용 가능성을 검토하기 위한 기초 단계의 실험적 연구를 진행하였다. 콘크리트 재료의 마감 유형에 따른 메카노크로믹 센서의 변형 및 변색 특성을 파악하였다. 그결과, 콘크리트 시험체의 인장변형률이 증가할수록 메카노크로믹 센서의 변형 및 변색 반응도가 증가하는 것을 확인하였다. 또한, 콘크리트, 우레탄, 에폭시, 수성페인트 및 유성페인트의 마감 환경의 차이는 메카노크로믹 센서의 변형 및 변색 특성에 영향을 미치지 않았다.

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 21CTAP-C163910-01).

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