Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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Effects of the Recycled Waste Rope Fibers on the Strength and Carbonation Resistance of Cementitious Composites

폐로프 재활용 섬유보강 시멘트 복합체의 탄산화가 강도에 미치는 영향

  • Sanghwan Cho (Department of Civil Engineering, Seoul National University of Science and Tehnology) ;
  • Taek Hee Han (Ocean Space Development and Energy Research Department, Korea Institute of Ocean Science and Technology (KIOST)) ;
  • Min Ook Kim (Department of Civil Engineering, Seoul National University of Science and Tehnology)
  • 조상환 (서울과학기술대학교 건설시스템공학과) ;
  • 한택희 (한국해양과학기술원 해양공간개발.에너지연구부) ;
  • 김민욱 (서울과학기술대학교 건설시스템공학과)
  • Received : 2023.11.01
  • Accepted : 2023.11.13
  • Published : 2023.12.30
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Abstract

In this study, a carbonation test was conducted on cementitious composites reinforced with recycled waste rope fibers (W series) according to EN 12390-12 standards. The test results were compared to those of commercially available polypropylene fibers (P series). In the carbonation test, both the carbonation depth and area were significantly influenced by the water-to-cement ratio. Notably, the carbonation resistance performance of cementitious composites containing waste rope fibers surpassed that of commercially available PP fibers under equivalent conditions. Throughout the 250-day test period, the W series exhibited higher compressive strength values than the P series, while both series displayed a similar trend of strength increase during the same duration. During the initial stage, the W series exhibited flexural strength levels similar to those of the P series. However, in the later stages, the P series showed a higher mean flexural strength by 1.0 MPa.

본 연구에서는 폐로프 재활용 섬유를 사용하여 보강된 시멘트 복합체(이하, W 시리즈)의 탄산화 시험을 EN 12390 규정에 따라 수행하고, 폴리프로필렌 기반 상용 보강재 (이하, P 시리즈)를 함유한 경우와 비교 분석하였다. 탄산화 시험 결과, 탄산화 깊이는 물시멘트비에 특히 큰 영향을 받았으며, 동일 조건에서 폐로프 보강재 함유 시멘트 복합체의 탄산화 저항성능이 상용 PP 계열 보강재를 혼입한 경우보다 다소 우수함을 확인하였다. 총 250일의 탄산화 시험 기간 동안, P시리즈와 W 시리즈 모두 압축강도가 증가하는 추세를 보였으나 W 시리즈의 평균 압축강도가 P 시리즈보다 다소 높은 것을 확인할 수 있었다. 또한, 시험 초기 단계에는 W 시리즈가 P 시리즈와 동일 수준의 휨강도를 얻었으나, 후반에는 P 시리즈가 평균 1.0 MPa 더 높은 휨강도를 보였다.

Keywords

Acknowledgement

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원(NRF-2021R1G1A1095265) 및 한국해양과학기술원 주요사업인 "해양쓰레기 재활용 항만 구조물 수명연장 기술 개발(과제번호 PEA0133)" 과제의 지원을 받아 수행한 연구로 이에 감사드립니다.

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