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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.11
- 수록면
- 217 - 223 (7page)
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초록· 키워드
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This study examined the shear behavior of two-span lightweight aggregate concrete (LWAC) beams with a designed compressive strength of 40 MPa and compared the modifications determined from the measured shear strengths with those specified in ACI 318-19 and Eurocode 2, as well as those proposed by Yang and Ashour. The main test parameters investigated were the concrete unit weight and the maximum size of the aggregate. Test results showed that the increase in the aggregate size for normal-weight concrete beams led to an increase in the shear capacity and load redistribution ratio calculated after the inclined shear cracks occurred within the interior shear spans, whereas these increasing rates became insignificant as the concrete unit weight decreased. Consequently, the measured modification factor tended to decrease with the decrease in the concrete unit weight and aggregate size. Thus, the code provisions unconservatively estimated the modification factors for the present two-span LWAC beams, whereas Yang and Ashour’s model provided promising estimations.
목차
Abstract
1. 서론
2. 실험 상세
3. 실험 결과 및 분석
4. 설계기준 및 제안모델과의 비교
5. 결론
REFERENCES
참고문헌 (16)
참고문헌 신청
ACI 318 (2019). Building code requirements for structural concrete (ACI 318-19) and commentary. American Concrete Institute (ACI), Farmington Hills, Michigan, USA.
Al-Allaf, M., Weekes, L., & Augusthus-Nelson, L. (2018). Shear behaviour of lightweight concrete beams strengthened with CFRP composite. Magazine of Concrete Research, 71(18), 1-16.
British Standards Institution (2004). Eurocode 2: Design of concrete structures EN1992-1-1: 2004. CEN-European Committee for Standardization. London, UK.
Dhir, K., Mays, R. G. C., & Chua, H. C. (1984). Lightweight structural concrete with aglite aggregate: Mix design and properties. International Journal of Cement Composites and Lightweight Concrete, 6(4), 249-261.
Jin, L., Jiang, X. A., Xia, H., Chen, F., & Du, X. (2020). Size effect in shear failure of lightweight concrete beams wrapped with CFRP without stirrups: Influence of fiber ratio. Composites Part B: Engineering, 199(15), 1-19.
Al-Allaf, M., Weekes, L., & Augusthus-Nelson, L. (2018). Shear behaviour of lightweight concrete beams strengthened with CFRP composite. Magazine of Concrete Research, 71(18), 1-16.
British Standards Institution (2004). Eurocode 2: Design of concrete structures EN1992-1-1: 2004. CEN-European Committee for Standardization. London, UK.
Dhir, K., Mays, R. G. C., & Chua, H. C. (1984). Lightweight structural concrete with aglite aggregate: Mix design and properties. International Journal of Cement Composites and Lightweight Concrete, 6(4), 249-261.
Jin, L., Jiang, X. A., Xia, H., Chen, F., & Du, X. (2020). Size effect in shear failure of lightweight concrete beams wrapped with CFRP without stirrups: Influence of fiber ratio. Composites Part B: Engineering, 199(15), 1-19.
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