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- W2111667832 abstract "본 논문에서는 FR-ECC의 수축특성과 균열도입 전후의 내동해성을 평가하였으며, FR-ECC를 활용한 다층복공구조의 지수성능과 박리박락저항성, 또한 FR-ECC로 단면복구 된 보부재의 휨성능을 평가하였다. 그 결과, FR-ECC는 소성수축에 의한 균열 및 건조수축에 의한 길이변화율이 기존의 보수모르터에 비해 크게 저감되었으며, 구속상태에서의 건조수축에 대한 균열저항성이 개선됨을 알 수 있었다. 또한, FR-ECC는 내동해성이 매우 우수하였으며, 균열도입 후에도 동결융해작용에 의한 인장성능의 저하는 확인되지 않았다. 한편, FR-ECC로 보수된 휨부재는 초기균열모멘트, 항복모멘트 및 극한모멘트 등의 휨성능이 증대되었으며, 멀티플크랙 특성에 의해 휨파괴시까지 균열폭을 안정적으로 제어할 수 있었다. This paper presents some research results on the shrinkage characteristics and frost resistance before and after cracking of FR-ECC(Fire Resistance-Engineered Cementitious Composite). Also, a waterstop performance and exfoliating resistance of multi-layer lining specimens using FR-ECC and flexural performance of beam member by repaired FR-ECC are estimated in this paper. Experimental results indicate that the plastic shrinkage crack and length change ratio of FR-ECC have been reduced as compared with that of the existing repair mortar, and that its crack resistance on the dry shrinkage is improved under the confining stress. As well as FR-ECC has been great in the frost resistance and its tensile properties under the cracked state have been not reduced by freezing and thawing reaction. In addition, beam member by repaired FR-ECC have been increased in the flexural properties such as initial crack moment, yeild moment, and its crack width has been controled in a stable by the frexural failure." @default.
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- W2111667832 date "2012-03-30" @default.
- W2111667832 modified "2023-10-17" @default.
- W2111667832 title "An Experimental Study on the Durability and Load Carrying Capacity of RC Structure Repair System Using FR-ECC" @default.
- W2111667832 doi "https://doi.org/10.11112/jksmi.2012.16.2.075" @default.
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