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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.13 No.7
- 발행연도
- 2019.11
- 수록면
- 845 - 856 (12page)
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The objective of this study is to assess the shear friction characteristics of lightweight aggregate concrete (LWAC) prepared using artificially expanded bottom ash and dredged soil granules. A total of 37 concrete mixtures were prepared under the classification of three series. In the first and second series, the natural sand content for replacing lightweight fine aggregates and the water-to-cement ratio varied to obtain different densities and compressive strengths of concrete. The third series was designed to estimate the effect of the maximum aggregate size on the friction resistance along the shear crack plane of the monolithic interfaces. The frictional angle of the LWAC tested was formulated as a function of the ratio of the effective tensile and compressive strengths of concrete through the expansion of the integrated mathematical models proposed by Kwon et al., based on the upper-bound theorem of concrete plasticity. When predicting the shear friction strength of LWAC, the present mathematical model exhibits relatively good accuracy, yielding the mean and standard deviation of the ratios between experiments and predictions of 1.06 and 0.14, respectively, whereas the empirical equations proposed by the AASHTO provision and Mattock underestimated the results. Ultimately, an advanced modification factor for shear design of LWAC is proposed as a function of the density and compressive strength of concrete and the maximum size of aggregates.
목차
Abstract
1 Introduction
2. Research Significance
3. Experimental Details
4. Test Results and Discussions
5. Modeling of Shear Friction Parameters
6. Modification Factor
7. Conclusions
References
참고문헌 (24)
참고문헌 신청
AASHTO. (2014). AASHTO LRFD Bridge design specifications (7th ed.). Washington, DC: American Association of State Highway and Transportation Official.
ACI Committee 213. (2014). Guide for structural lightweight-aggregate concrete (ACI 213R-14). American Concrete Institute.
ACI Committee 318. (2014). Building code requirements for structural concrete and commentary (ACI 318-14). Farmington Hills, MI: American Concrete Institute.
ACI-ASCE Committee 426. (1973). The shear strength of reinforced concrete members. Journal Proceedings, 70(7), 471?473.
ASTM C39, C143, C150, C231, C330, C642. (2013). Annual book of ASTM standards: V. 4.02. ASTM International.
ACI Committee 213. (2014). Guide for structural lightweight-aggregate concrete (ACI 213R-14). American Concrete Institute.
ACI Committee 318. (2014). Building code requirements for structural concrete and commentary (ACI 318-14). Farmington Hills, MI: American Concrete Institute.
ACI-ASCE Committee 426. (1973). The shear strength of reinforced concrete members. Journal Proceedings, 70(7), 471?473.
ASTM C39, C143, C150, C231, C330, C642. (2013). Annual book of ASTM standards: V. 4.02. ASTM International.
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