금속섬유를 이용한 섬유보강 시멘트 복합재료(FRCC)의 철근 방식 효과
A Study on the Steel Anticorrosive Effect of Fiber-Reinforced Cement Composite (FRCC) by using Metal Fibers
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초록
섬유보강 시멘트계 복합재료 (이하 FRCC)는 균열 폭의 제어 등의 역학적인 효과뿐 아니라 철근방식에도 효과가 있는 것이 기존의문헌으로부터 확인되고 있다. 본 연구에서는 아연섬유를 포함한 각종 금속섬유를 이용하여 철근의 방식효과를 부식 촉진 실험에 의해 검토했다. 더욱이 방식효과에 큰 영향을 미치는 염분침투, 희생양극 효과, 전기회로 형성에 주목하여, 각각의 요인에 있어서 검토를 실시했다. 그 결과, 금속섬유를 혼입한 FRCC의 방식효과를 확인할 수 있었으며, 특히 희생 양극효과가 높은 아연섬유의 경우, 염분침투 억제 효과가 뛰어나 내부식 성능이 향상되는 것을 확인할 수 있었다.
Abstract
Fiber-Reinforced Cement Composite (FRCC) is known to be effective in mechanical effects such as cracking width control as well as steelanticorrosive effect. In this study, we examined about steel anticorrosive effect by using metal fibers including zinc fibers by accelerated corrosion test. Moreover, it was examined for salt penetration, sacrificial anode effect and formation of electric circuit that was significant effect on the steel anticorrosiveeffect. As a result, Steel anticorrosive effect was confirmed with mixed metal fibers on FRCC. Especially, In the case of zinc fibers with a high sacrificialanode effect, it was confirmed that the suppression of penetration and corrosion resistance were improved.
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