숏크리트 구성 재료에 따른 콘크리트 성능에 관한 실험적 연구
An experimental study on performance of concrete with constituent materials of shotcrete
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The experiment was carried out to investigate the influence of coarse aggregate, admixture, and accelerator on the properties of concrete. As the maximum size of coarse aggregate decreased from 13 mm to 8 mm, fluidity of fresh concrete declined but compressive strength and dynamic modulus of elasticity of hardened concrete increased remarkably. The mechanical properties of concrete substituted silica fume to the plain concrete improved, the compressive strength of that substituted blast furnace slag increased slightly. The hydration reaction and compressive strength of specimen with sodium aluminate type accelerator were high at initial, but specimen with alkali free type accelerator improved largely in 28 days.
Abstract
The experiment was carried out to investigate the influence of coarse aggregate, admixture, and accelerator on the properties of concrete. As the maximum size of coarse aggregate decreased from 13 mm to 8 mm, fluidity of fresh concrete declined but compressive strength and dynamic modulus of elasticity of hardened concrete increased remarkably. The mechanical properties of concrete substituted silica fume to the plain concrete improved, the compressive strength of that substituted blast furnace slag increased slightly. The hydration reaction and compressive strength of specimen with sodium aluminate type accelerator were high at initial, but specimen with alkali free type accelerator improved largely in 28 days.
참고문헌 (12)
- 김기형, "레디믹스트 콘크리트의 공기량 손실에 관한 고찰", 대한토목학회 학술발표회 개요집, pp.37~42 (1986)
- 김덕현, "굵은골재 최대치수별 굵은골재", 잔골재 용적비에 따른 콘크리트의 특성에 관한 실험적 연구, 2004, pp.4(2), 97~103[DOI]
- 숏크리트 장기 내구성 평가 및 제기준 제정 연구, "마상준", 한국건설기술연구원, ~ (2006)
- 이양규, "NATM 터널의 건·습식 Shotcrete 강도시험에 관한 연구", 대한토목학회 논문집D, 24(2d), pp.239~245 (2004), 대한토목학회
- 沼田, "セメント･コンクリート用 混和材料" (1986), 技術書院.
- De Belie, N, "Ultrasound monitoring of the influence of different accelerating admixtures and cement types for shotcrete on setting and hardening behaviour", Cement and Concrete Research, 35(11), pp.2087~2094 (2005)
- Jahren, P, "Use of silica fume in concrete", Proceedings, CANMET, 1983, 625~642
- Luiz, R. P, "Accelerating admixtures for shotcrete", Cement and Concrete Composites, 20(3), pp.213~219 (1998)
- Malhotra, V. M., "Silica fume concrete- properties, application, and limitations", Concrete International: Design & Construction, 19(5), pp.40~46 (1983)
- Markus, P., "Rheology and rebound behaviour of dry-mix shotcrete", Cement and Concrete Research, 31(11), pp.1619~1625 (2001)
- Paglia, C, "The influence of alkali-free and alkaline shotcrete accelerators within cement systems: I. Characterization of the setting behavior", Cement and Concrete Research, 31(6), pp.913~918 (2001)
- Su, Z., "Influence of polymer modification on the hydration of portland cement", Cement and Concrete Research, 21(5), pp.727~736 (1991)