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Engineering Property of Basalt Fiber as a Reinforcing Fiber

보강 섬유로서 현무암 섬유의 공학적 특성

  • Choi, Jeong-Il (School of Architecture, Chonnam National University) ;
  • Jang, Yu-Hyun (School of Architecture, Chonnam National University) ;
  • Lee, Jae-Won (School of Architecture, Chonnam National University) ;
  • Lee, Bang-Yeon (School of Architecture, Chonnam National University)
  • Received : 2015.03.17
  • Accepted : 2015.03.25
  • Published : 2015.03.30

Abstract

Basalt fiber has many advantages as a reinforcing fiber such as high tensile strength and similar density to concrete. This study investigated the bonding property and the effect of fiber orientation on tensile strength of basalt fiber. Single fiber pullout tests for basalt and polyvinyl alcohol (PVA) fibers were performed to evaluate the bonding property between basalt fiber and mortar. And then tensile strength of basalt, PVA, and polyethylene (PE) fibers according to fiber orientation were measured. From the test results, it was exhibited that the chemical bond, frictional bond, and slip-hardening coefficient of basalt fiber were 1.88, 1.03, 0.24 times of PVA fibers, respectively. And the strength reduction coefficient of basalt fiber was 9 times of PVA fiber and 3 times of PE fiber.

현무암섬유는 높은 인장강도와 콘크리트와 유사한 밀도를 갖기 때문에 콘크리트 보강 섬유로서 장점을 갖고 있다. 이 연구에서는 현무암섬유의 부착 특성과 섬유 배향각에 따른 현무암섬유의 인장 강도 특성을 조사하였다. 이를 위하여 현무암섬유와 폴리비닐알코올섬유에 대한 섬유 인발 실험을 수행하였고, 현무암, 폴리비닐알코올, 폴리에틸렌섬유에 대하여 섬유 배향각에 따른 인장 강도를 측정하였다. 실험 결과 현무암섬유의 화학적 부착, 마찰 부착, 미끌림 경화 계수는 폴리비닐알코올섬유와 비교하여 각각 1.88, 1.03, 0.24배로 나타났다. 현무암섬유의 배향각에 따른 강도 감소 계수는 폴리비닐알코올섬유의 9배, 폴리에틸렌섬유의 3배로 나타났다.

Keywords

Acknowledgement

Supported by : 국토교통부

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