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콘크리트 피복 두께 및 철근 직경에 따른 초고강도 콘크리트와 이형철근의 부착특성Bond Characteristics Between Deforemd Steel Rebar and Ultra-High-Strength Concrete According to Concrete Cover Depth and Rebar Diameter

Other Titles
Bond Characteristics Between Deforemd Steel Rebar and Ultra-High-Strength Concrete According to Concrete Cover Depth and Rebar Diameter
Authors
신현오이승정류두열
Issue Date
May-2018
Publisher
한국콘크리트학회
Citation
한국콘크리트학회 2018년도 봄 학술대회 논문집, v.30, no.1, pp.291 - 292
Indexed
OTHER
Journal Title
한국콘크리트학회 2018년도 봄 학술대회 논문집
Volume
30
Number
1
Start Page
291
End Page
292
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/150002
Abstract
This study investigates the bond characteristic between deforemd steel rebar and ultra-highstrength concrete (over 180 MPa). Given the pullout failure mode, cover depth had an insignificant effect on the normalized bond strength, whereas the normalized bond strength increased noticeably with increasing cover depth in the splitting crack failure mode. In addition, the average bond strength of steel rebar in ultra-high-strength concrete decreased slightly as the bar diameter increased. 본 연구에서는 콘크리트 피복두께 및 철근 직경에 따른 초고강도 콘크리트(180MPa 이상)와 이형철근의 부착특성을 평가하였다. 실험결과 Pull-out 파괴모드에서는 피복두께에 따른 평균부착강도의 영향이 미미하였으나, 쪼갬파괴가 발생한 실험체의 경우 피복두께가 증가할수록 평균부착강도가 크게 증가하였다. 또한 철근 직경에 따른 실험결과 철근 직경이 증가 할수록 부착면적의 증가에 따라 최대 부착하중은 증가하였지만 평균부착강도는 감소하는 경향을 보였다.
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