콘크리트학회논문집 (Journal of the Korea Concrete Institute)

  • 제25권4호
  • /
  • Pages.389-400
  • /
  • 2013
  • /
  • 1229-5515(pISSN)
  • /
  • 2234-2842(eISSN)
한국콘크리트학회 (Korea Concrete Institute)
권호 표지
DOI QR코드

DOI QR Code

전단보강이 없는 순환골재 철근콘크리트 보의 전단거동에 관한 연구

A Study on the Shear Behavior of Recycled Aggregate Reinforced Concrete Beams without Stirrups

  • Lee, Jung-Hoon (Dept. of Architectural Engineering, Kumoh National Institute of Technology) ;
  • Kim, Woo-Suk (Dept. of Architecture and Architectural Engineering, Seoul National University) ;
  • Baek, Seung-Min (Dept. of Architectural Engineering, Kumoh National Institute of Technology) ;
  • Kang, Thomas H.K. (Dept. of Architecture and Architectural Engineering, Seoul National University) ;
  • Kwak, Yoon-Keun (Dept. of Architectural Engineering, Kumoh National Institute of Technology)
  • 투고 : 2012.10.29
  • 심사 : 2013.06.04
  • 발행 : 2013.08.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

몇몇 연구자들에 의해 순환골재를 사용한 철근콘크리트 보의 전단거동에 대한 연구가 수행되었다. 이 실험에서는 건물 구조체에 순환골재 콘크리트의 적용 가능성과 전단 성능에 대하여 조사하였다. 일반적으로, 전단보강이 없는 철근콘크리트 보의 전단강도는 콘크리트의 압축강도, 인장철근비 및 전단경간비의 영향을 받는다. 이 연구에서는, 전단보강이 없는 28개의 순환골재 철근콘크리트 보를 2점 가력하여 실험하였다. 순환골재 치환율(0, 15, 30, 50%), 전단경간비(a/d=2, 3, 4) 및 인장철근비(${\rho}$=0.80, 1.27, 1.84%)를 변수로 하였고, 순환골재 치환율 50%를 기준으로 압축강도 30 MPa을 목표로 배합하였다. 이 연구가 순환 골재 철근콘크리트 보의 전단설계식 제정에 기초적 자료로써 중요한 역할을 할 수 있을 것으로 생각된다.

Little investigations have been carried out to study the shear behaviors of RC beams with recycled aggregates. So, this experiment investigates the shear performance and suggests the possible application of Recycled Concrete Aggregate (RCA) for building structures. In general, shear strength of reinforced concrete beam without stirrups is dependent on the compressive strength of concrete, the longitudinal steel ratio, and the shear span-to-depth ratio. In this study, total 28 recycled aggregate concrete beams without shear reinforcement were tested by two-point load and all beams were singly reinforced. The variables studied in this investigation are shear span-to-depth ratios (a/d=2, 3 and 4), RCA replacement ratios (0, 15, 30 and 50%) and longitudinal steel ratios (0.80, 1.27 and 1.84%). The designed concrete compressive strength with a 30 MPa is used. This research will play an important role toward the establishment of the structural design standard for RCA concrete.

키워드

참고문헌

  1. Ministry of Environment, Comprehensive Plan to Promote of the Recycling of Construction Waste, Korea, 2002, 16 pp.
  2. Kim, K. W., Yeon, K. S., and Lee, B. D., "Problems in Strength Characteristics of Recycled Waste Concrete," Proceedings of the Korea Concrete Institute, Vol. 4, No. 2, 1992, pp. 44-49.
  3. Lee, Y. O., Yun, H. D., You, Y. C., and Kim, K. H., "Shear Performance of Reinforced Concrete Beams Utilized Mixed Recycled Coarse Aggregates," Journal of the Architectural Institute of Korea, Vol. 26, No. 4, 2010, pp. 39-46.
  4. Lee, W. S., Yun, H. D., Kim, S. W., Choi, K. S., You, Y. C., and Kim, K. H., "The Effect of Replacement Ratio of Recycled Coarse Aggregate on Shear Strength of Reinforced Concrete Beams without Shear Reinforcement," Journal of the Architectural Institute of Korea, Vol. 23, No. 10, 2007, pp. 3-10.
  5. Yoon, S. J. and Jeon, S. J., "The Shear Behavior of Reinforced Concrete Beams Using Recycled Aggregate," Proceedings of the Architectural Institute of Korea (AIK), 2006, pp. 261-264.
  6. Mathey, R. G. and Watstein, D., "Shear Strength of Beams without Web Reinforcement," ACI Journal, Proceedings, Vol. 60, No. 2, 1963, pp. 183-208.
  7. Zsutty, T. C., "Shear Strength Prediction for Separate Cate -gories of Simple Beam Test," ACI Journal, Vol. 68, No. 2, 1971, pp. 138-143.
  8. Bazant, Z. P. and Kim, J. K., "Size Effect in Shear Failure of Longitudinally Reinforced Beams," ACI Journal, Proceedings, Vol. 81, No. 5, 1984, pp. 456-468.
  9. Kani, G. N. J., "How Safe Are Our Large Reinforced Concrete Beams?" ACI Journal, Proceedings, Vol. 64, No. 3, 1967, pp. 128-141.
  10. Salandra, M. A. and Ahmad, S. H., "Shear Capacity of Reinforced Lightweight High Strength Concrete Beams," ACI Structural Journal, Vol. 86, No. 6, 1989, pp. 697-704.
  11. Minister of Land, Transport and Maritime Affairs, Korean Building Code, Arch. Institute of Korea, Seoul, 2009, 1040 pp.
  12. Kim, J. K. and Park, Y. D., "An Experimental Study on the Shear Strength of Reinforced High Strength Concrete Beams without Stirrups," Journal of the Korea Concrete Institute, Vol. 5, No. 1, 1993, pp. 103-113.

피인용 문헌

  1. Prediction of shear strength of reinforced concrete beams without shear reinforcement considering bond action of longitudinal reinforcements pp.2048-4011, 2017, https://doi.org/10.1177/1369433217706778