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경량 콘크리트의 유동성 및 역학적특성에 대한 굵은골재 최대크기의 영향
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  • 경량 콘크리트의 유동성 및 역학적특성에 대한 굵은골재 최대크기의 영향
저자명
심재일,양근혁,Sim. Jae-Il,Yang. Keun-Hyeok
간행물명
大韓建築學會論文集 : Journal of the architectural institute of Korea : Structure & construction / 構造系
권/호정보
2012년|28권 5호|pp.61-68 (8 pages)
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

To provide the basic data for the reasonable lightweight concrete mixture design model, a test with a mixture ratio of 18 was conducted with the maximum coarse aggregate size, water-binder ratio and type of the lightweight concrete as main parameters. The slump and air content were measured from the uncured concrete, and the compression strength by age, air content, tensile strength, modulus of rupture and modulus of elasticity were measured from the cured concrete. The measured kinetic characteristics were compared with the design standard to evaluate the structural safety. The test results showed that the initial slump and air content of the lightweight concrete were higher with a smaller maximum size of the coarse aggregate. The water-binder ratio had a significant effect on the kinetic characteristics of the lightweight concrete, but the maximum size of the coarse aggregate did not. This was because the failure of the lightweight concrete penetrated the aggregate, and the resistance effect of the low-strength aggregate decreased. The test results were properly evaluated according to the ACI 318-11 design standard on the modulus of elasticity of the lightweight concrete.