Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)

Korea Institute for Structural Maintenance Inspection (한국구조물진단유지관리공학회)
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Evaluation of Flexural Behavior of Masonry Members Reinforced with Engineered Cementitious Composite

고인성 복합체로 보강한 조적부재의 휨 거동 평가

  • 양승현 (우석대학교 건설공학과) ;
  • 김선웅 ((주)에이엠에스엔지니어링 기업부설연구소) ;
  • 김재환 ((주)에이엠에스엔지니어링) ;
  • 강석표 (우석대학교 건축학과) ;
  • 홍성욱 (우석대학교 건축학과)
  • Received : 2021.04.30
  • Accepted : 2021.08.18
  • Published : 2021.08.30
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Abstract

This paper is a basic study to evaluate the possibility of earthquake-resistant reinforcement by reinforcing engineered cementitious composite in masonry members. In order to examine the performance according to the fiber mixing rate of the engineered cementitious composite, a test specimen was prepared according to the formulation design, and flow ability, compressive strength, flexural strength, length change rate, and direct tensile strain were measured. In addition, non-reinforced masonry members, masonry members reinforced with engineered cementitious composite, and masonry members in which glass fibers and wire mesh were separately reinforced with engineered cementitious composites were manufactured, and flexural strength and maximum displacement were measured. All specimens reinforced with engineered cementitious composite showed more than 16 times the effect of maximal strength compared to that of no reinforcement, and as a result of examining the crack shape, the energy dissipation ability was excellent, confirming the possibility of seismic reinforcement.

논문은 조적부재에 고인성 복합체를 보강하여 내진보강 가능성을 평가하기 위한 기초연구이다. 고인성 복합체의 섬유 혼입률에 따른 성능을 검토하기 위하여 배합설계에 따라 시험체를 제조하고 유동성능, 압축강도, 휨 강도, 길이변화율 및 직접인장변형률을 측정하였다. 또한, 무보강 조적부재, 고인성 복합체로 보강한 조적부재, 고인성 복합체에 유리섬유 및 와이어 메쉬를 별도 보강한 조적부재를 제작하고 휨 강도와 최대변위를 측정하였다. 고인성 복합체를 보강한 모든 실험체들은 무보강과 비교하여 최대내력이 16배 이상의 효과가 나타났으며 균열 형상을 검토한 결과 에너지소산능력이 우수한 것으로 나타나 내진보강 가능성을 확인하였다.

Keywords

Acknowledgement

본 성과물은 중소벤처기업부에서 지원하는 2021년도 산학 Collabo R&D사업(No.S3106526)의 연구수행으로 인한 결과물임을 밝힙니다. 이에 감사드립니다.

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