Advances in Computational Design

  • 제8권2호
  • /
  • Pages.113-131
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  • 2023
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  • 2383-8477(pISSN)
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  • 2466-0523(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Polyvinyl-alcohol fiber-reinforced concrete with coarse aggregate in beam elements

  • Leonardo M. Massone (University of Chile, Department of Civil Engineering) ;
  • Jaime Reveco (University of Chile, Department of Civil Engineering) ;
  • Alejandro Arenas (University of Chile, Department of Civil Engineering) ;
  • Fabian Rojas (University of Chile, Department of Civil Engineering)
  • 투고 : 2022.11.30
  • 심사 : 2023.03.23
  • 발행 : 2023.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

The use of fibers has been commonly considered in engineered cementitious composites, but their behavior with coarse aggregate in concrete has not been studied significantly, which is needed to meet structural performance objectives for design, such as ductility. This research analyzes the behavior of fiber-reinforced concrete with coarse aggregate with 0.62%, 1.23%, and 2% PVA (Polyvinyl-alcohol) content, varying the maximum aggregate size. Tensile (direct and indirect) and compressive concrete tests were performed. The PVA fiber addition in coarse aggregate concrete increased the ductility in compression, especially for the fiber with a larger aspect ratio, with a minor impact on strength. In addition, the tensile tests showed that the PVA fiber increased the tensile strength of concrete with coarse aggregate and, more significantly, improved the ductility. A selected mixture was used to build short and slender reinforced concrete beams to assess the behavior of structural members. PVA fiber addition in short beams changed the failure mode from shear to flexure, increasing the deflection capacity. On the other hand, the slender beam tests revealed negligible impact with the use of PVA.

키워드

과제정보

This work was funded by the National Agency for Research and Development (ANID) for the project Fondecyt Regular 2020 N°1200023. The authors would like to also thank the support of Mr. Pedro Soto for his help with the laboratory setup and testing.

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