An Experimental Study about Behavior of a Repaired Underwater Structure with an Epoxy Fiber Panel and Polymer Mortar

에폭시 섬유판넬과 폴리머 모르타르로 단면보수된 수중구조물의 거동에 관한 실험적 연구

  • Received : 2008.07.25
  • Accepted : 2008.08.29
  • Published : 2009.01.30

Abstract

An underwater structure is made to put with serious damage state by special environmental factors. If this damage phenomena persist, as for the structure, it is generated a structural serious problem because of the corrosion of a reinforcing bar and the loss of the concrete cut end. Repair work of an underwater structure is very harder than repair work in land, and it is actual that certification about a maintenance effect is uncertain. And the existing repair method is applied to a structure damaged with you without verification of a repair effect by a foreign reward and experience. In this study, a repair method about an underwater structure was proposed and observed a behavior characteristic and interface failure of an specimens. and comparison analyzed an effect of a proposed maintenance method.

수중구조물은 특수한 환경적 요인에 의하여 심한 열화상태에 놓이게 되며, 이러한 열화현상이 지속되게 되면 구조물은 철근의 부식과 콘크리트단면의 손실로 인하여 구조적으로 심각한 문제를 발생하게 된다. 수중구조물은 기중환경에서의 보수작업보다 매우 어려우며, 보수효과에 대한 증명도 불확실한 것이 현실이며, 기존의 보수공법은 외국의 사례를 보수효과의 검증없이 그대로 적용하거나, 경험에 의하여 시공되어져 왔다. 본 연구에서는 수중구조물에 대한 보수공법을 제안하고, 실험체의 거동특성과 보수재와 피보수재의 계면파괴를 관찰하여 제안된 보수공법의 효과를 비교 분석하였다.

Keywords

References

  1. 김생빈, "漢江橋梁의 水中下部 構造物의 損傷調査 및 安全診斷", 토목학회지, 1994, 4, pp. 39-54
  2. 염종윤, "UnderWater Concrete Repairing", 롯데 건설기보, 1998, 6, pp. 77-82
  3. Austin, S. A. and Robin, P. J., "Development of Patch Test to Study Behaviour of Shallow Concrete Patch Repairs", Magazine of Concrete Research, Vol. 45. No. 164, Sept. 1993, pp. 221-229 https://doi.org/10.1680/macr.1993.45.164.221
  4. Emberson, N. K. and Mays, G. C., "Significance of property mismatch in the patch repair of structural concrete Part 2: Axially loaded reinforced concrete members", Magazine of Concrete Research, V. 42, No. 152, Sept. 1990, pp. 147-170 https://doi.org/10.1680/macr.1990.42.152.147