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Chloride Penetration Resistance and Flexural Behavior of Hybrid Organic Fibers Reinforced Concrete

유기계 섬유로 하이브리드 보강된 콘크리트의 휨 거동 및 염분침투저항성

Kim, Seung Hyun;Kang, Min Bum;Lee, Dong Wook
김승현;강민범;이동욱

  • Received : 2015.10.21
  • Accepted : 2015.12.15
  • Published : 2015.12.30

Abstract

In this study, to understand mechanical characteristic of hybrid reinforced concrete by PVA-fiber 6 mm and PP-fiber 50 mm, which are organic fiber replaced macro-fiber with PP-fiber, four mixed Hybrid Organic Fibers Reinforced Concrete (HFRC) is compared with one mixed plain concrete without fiber reinforcement. Volume portion of the fibers are limited under one percent. The result presents that hybrid reinforcement of the organic fibers cannot maximize stiffness and ductility behavior of the steel fiber reinforcement. however, in comparison to plain concrete, it is confirmed that meaningful relation between toughness index and equivalent flexural strength with advanced ductility behavior. Also, in the case of concrete hybrid reinforced by organic fiber, when the volume portion of the fiber increases, ductility also increases. PP-fiber, which is macro fiber, has more effect on the flexural behavior of concrete than PVA-fiber, which is micro fiber, does. The result also shows that it decrease chloride penetration in chloride penetration test.

Keywords

Hybrid Fiber Reinforced Concrete;Organic fibers;Ductility behavior;Toughness index;Chloride Penetration

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Acknowledgement

Supported by : Ministry of Oceans and Fisheries