Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
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Evaluation of Fire Resistance Performance of Polymer Modified Cement Mortar Using Polypropylene Fiber

폴리프로필렌 섬유를 혼입한 폴리머 시멘트 모르타르의 내화성능 평가

  • Jeon, Ki-Soo (Korea Institute of Civil Engineering and Building Technology) ;
  • Sim, Sang-Rak (Department of Architectural Engineering, Daejin University) ;
  • Lee, Young-Do (Department of Architectural Engineering, Kyungdong University)
  • Received : 2022.10.28
  • Accepted : 2023.01.12
  • Published : 2023.04.20
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Abstract

In this study, the fire resistance capabilities of polypropylene fiber-reinforced polymer-modified cement mortar were assessed to guarantee the fire resistance fo this materials, commonly employed in the repair of concrete structures. Experimental outcomes revealed that an increased water and polymer content heightened the likelihood of spalling, while longer polypropylene fibers and elevated polymer concentrations proved more effective in mitigating spalling.

본 연구에서는 열화 콘크리트 구조물의 보수 시 현재 범용적으로 사용하고 있는 폴리머 시멘트 모르타르의 내화성능을 확보하기 위한 최적 배합을 도출하고자 폴리머 혼입량(2, 4, 6, 8%)에 따른 PP섬유의 길이(6, 12mm) 및 PP섬유 혼입량(0.05, 0.1Vol%)에 따른 섬유혼입 폴리머 시멘트 모르타르의 내화성능을 평가하였다. 실험결과 함수율 및 폴리머 혼입률이 높을수록 폭렬발생 가능성이 증가하며, PP섬유의 길이가 길고 혼입률이 증가할수록 폭렬저감에 효과적인 것으로 나타났다.

Keywords

Acknowledgement

This article is a condensed form of the first author's master's thesis from Daejin University.

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