강섬유 보강 순환골재 콘크리트 충전 각형강관의 전단성능 실험

다국어 초록 (Multilingual Abstract)

Recycled aggregates generally have low density of aggregates because their cement paste is not totally removed, and their structural performance is degraded due to increased absorption rate. In order to improve these drawbacks, in this paper, the structural properties of recycled aggregate concrete was improved by suppressing drying shrinkage, stress distribution, and reinforcing steel fibers that serve as crack dispersion, and the unstable physical properties were prevented by filled steel tubes. In addition, shear experiments were conducted with respect to major variables (recycled aggregate replacement rate, end plate, and shear span-to-depth) by mixing steel fibers useful in enhancing strength and ductility of concrete to utilize recycled aggregate concrete as structural members. The shear experiments showed that the load and displacement of all experimental specimens filled in steel tubes increased proportionally, indicating a plastic behavior.

참고문헌 (Reference)

1 김윤일, "순환굵은골재 60% 이상 사용한 고강도 콘크리트에 대한 강섬유 보강 효과" 한국건설순환자원학회 4 (4): 404-417, 2016

2 신재린, "순환골재를 사용한 강섬유보강 콘크리트보의 구조 성능 평가" 한국콘크리트학회 27 (27): 215-227, 2015

3 김성은, "순환골재를 사용한 SFRC 보의 전단성능" 한국구조물진단유지관리공학회 22 (22): 189-196, 2018

4 최원호, "순환골재를 사용한 50MPa 콘크리트충전 각형⋅원형 강관(CFT)기둥의 압축성능" 한국복합신소재구조학회 9 (9): 72-80, 2018

5 심종성, "순환골재 치환율에 따른 순환골재콘크리트의 압축강도 및 탄성계수 특성" 대한토목학회 26 (26): 213-218, 2006

6 정은비, "대구경 콘크리트 충전형 합성기둥의 전단 설계식 분석" 한국강구조학회 27 (27): 399-410, 2015

7 김선희, "강섬유로 보강된 내부 앵커형 각형강관 합성기둥의 구조와 내화성능 향상에 관한 연구" 서울시립대학교 대학원 2014

8 김선희, "강섬유 콘크리트가 충전된 용접조립 각형강관 기둥의 구조성능 실험연구" 한국강구조학회 27 (27): 13-22, 2015

9 오재현, "建設廢棄物의 리싸이클링 現況과 硏究動向 -國內資源의 有效利用을 위한 處理 및 回收技術動向(4)-" 한국자원리싸이클링학회 17 (17): 16-29, 2008

10 Korean Agency for Technology and Standards, "Test Pieces for Tensile Test for Metallic Materials (KS B 0801: 2007)"

11 Mansouri, A., "Shear Strength of Concrete-Filled Steel Tubes Based on Experimental Results" American Society of Civil Engineers 146 (146): 04020097-, 2020

12 ACI Committee 209, "Prediction of Creep, Shrinkage and Temperature Effects in Concrete Structures (209R-92, Reapproved 2008)"

13 Thomas, J., "Mechanical Properties of Steel Fiber-Reinforced Concrete, Journal of Materials in Civil Engineering" 19 (19): 385-392, 2007

14 Ministry of Land, Infrastructure and Transport, "Korean Building Code for Steel Structures (KDS 41 3000: 2019)"

15 Congzhen Xiao, "Experimental study on shear capacity of circular concrete filled steel tubes" 국제구조공학회 13 (13): 437-449, 2012

16 Xu, C., "Experimental Study on Shear Resistance of Self-Stressing Concrete Filled Circular Steel Tubes" Elsevier 65 (65): 801-807, 2009

17 Yang, Y. F., "Concrete Shrinkage and Creep in Recycled Aggregate Concrete-Filled Steel Tubes" Sage 11 (11): 383-396, 2008

18 Lee, S. H., "A Study on the Mechanics Properties of High Strength Recycled Aggregate Concrete" AIK 13 (13): 575-583, 2001