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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.1
- 발행연도
- 2019.1
- 수록면
- 115 - 127 (13page)
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초록· 키워드
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The objective of this study is to examine the workability and various mechanical properties of concrete using artificial lightweight aggregates produced from expanded bottom ash and dredged soil. Fifteen concrete mixes were classified into three groups with regard to the designed compressive strengths corresponding to 18 MPa, 24 MPa, and 35 MPa. In each group, lightweight fine aggregates were replaced by using natural sand from 0 to 100% at an interval of 25%. Thus, the density of concrete ranged between 1455 and 1860 kg/㎥. Based on the regression analysis using test data, a reliable model was proposed to clarify lower early-age strength and higher long-term strength gains of lightweight aggregate concrete (LWAC) when compared with the predictions of the fib model. The proposed model also indicates that a lower water-to-cement ratio is required with the decrease in the natural sand content to achieve the designed compressive strength of concrete. The partial use natural sand is favorable for enhancing the tensile resistance capacity, shear friction strength, and bond behavior with a reinforcing bar of LWAC. The fib model overestimates direct tensile strength, bond strength and the amount of slip at the peak bond stress of LWAC. Therefore, it is necessary to consider the density of concrete as a critical factor in conjunction with its compressive strength to rationally evaluate the various mechanical properties of LWAC.
목차
Abstract
1. Introduction
2. Significance of Research
3. Experimental Details
4. Test Results and Discussions
5. Modulus of Elasticity (Ec)
6. Conclusions
References
참고문헌 (22)
참고문헌 신청
ACI Committee 211. (1998). Standard practice for selecting proportions for structural lightweight concrete (ACI 211.2-98). American Concrete Institute.
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 (ACI 318-14). Farmington Hills, MI: American Concrete Institute.
Aslam, M., Shafigh, P., & Jumaat, M. Z. (2016). Oil-palm by-products as lightweight aggregate in concrete mixture-A review. Journal of Cleaner Production, 126(2016), 56?73.
ASTM C31, C78 C138, C143, C231, C330, C469. (2012). 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 (ACI 318-14). Farmington Hills, MI: American Concrete Institute.
Aslam, M., Shafigh, P., & Jumaat, M. Z. (2016). Oil-palm by-products as lightweight aggregate in concrete mixture-A review. Journal of Cleaner Production, 126(2016), 56?73.
ASTM C31, C78 C138, C143, C231, C330, C469. (2012). Annual book of ASTM standards: V. 4.02. ASTM International.
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