폴리프로필렌 섬유 보강 CSG 재료의 다짐 및 압축강도 특성
The Compaction and Compressive Strength Properties of CSG Material Reinforced Polypropylene Fiber
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초록
The cemented sand and gravel (CSG) method is a construction technique that adds cement and water to rock-like materials, such as rivered gravel or excavation muck which can be obtained easily at areas adjacent to dam sites. This study was performed to evaluate the compaction and compressive strength properties of stress-strain, elastic modulus and fracture mode CSG materials reinforced polypropylene fiber. Polypropylene fiber widely used for concrete reinforcement is randomly distributed into cemented sand. The two types of polypropylene fiber (monofillament and fibrillated fiber) were used and fiber fraction ratio was 0, 0.2 %, 0.4 %, 0.6 % and 0.8 % by the weight of total dry soil. The effect of fiber fraction ratio and fiber shape on compaction and compressive strength were investigated. The optimum moisture contents (OMC) of CSG material increased as fiber fraction increased and the dry density of CSG material decreased as fiber fraction. Also, the maximum increase in compressive strength was obtained at 0.4 % content of monofillament and fibrillated fiber. CSG material behaviour was controlled not only by fiber fraction but also fiber distribution, fiber shape and fiber type.
Abstract
The cemented sand and gravel (CSG) method is a construction technique that adds cement and water to rock-like materials, such as rivered gravel or excavation muck which can be obtained easily at areas adjacent to dam sites. This study was performed to evaluate the compaction and compressive strength properties of stress-strain, elastic modulus and fracture mode CSG materials reinforced polypropylene fiber. Polypropylene fiber widely used for concrete reinforcement is randomly distributed into cemented sand. The two types of polypropylene fiber (monofillament and fibrillated fiber) were used and fiber fraction ratio was 0, 0.2 %, 0.4 %, 0.6 % and 0.8 % by the weight of total dry soil. The effect of fiber fraction ratio and fiber shape on compaction and compressive strength were investigated. The optimum moisture contents (OMC) of CSG material increased as fiber fraction increased and the dry density of CSG material decreased as fiber fraction. Also, the maximum increase in compressive strength was obtained at 0.4 % content of monofillament and fibrillated fiber. CSG material behaviour was controlled not only by fiber fraction but also fiber distribution, fiber shape and fiber type.
참고문헌 (16)
- Bae, K. U., "Laboratory and In-situ Mix Designs for Applications of the CSG Method", 석사, pp.2006
- Kim, S. M., "The Effects on the Cement Paste and Mortars Adding Magnesium Fluorosilicate Prepares from Hydrofluorosilicate Produced as Industrial By-product", Journal of the Korea Solid Waste Engineering Society, 4(7), pp.701~711 (1997)
- 김병일, "무기질 고화제를 첨가한 소일시멘트의 강도 특성", 대한토목학회 논문집C, 23(3C), pp.135~141 (2003), 대한토목학회
- 김종렬, "소일시멘트의 일축압축강도 특서 및 시간의존 거동", 한국구조물진단유지관리공학회 논문집, 8(4), pp.87~96 (2004), 한국구조물진단유지관리공학회
- 김기영, "Cemented Sand and Gravel 재료의 강도특성", 한국지반공학회논문집, 21(10), pp.61~72 (2005), 한국지반공학회
- 김기영, "C.S.G 재료의 일축압축강도에 미치는 영향인자", 한국지반공학회논문집, 22(10), pp.33~45 (2006), 한국지반공학회
- 김낙경, "세섬유 보강 성토 재료 Ⅰ: 강도 특성", 대한토목학회 논문집C, 27(1C), pp.29~36 (2007), 대한토목학회
- 김윤태, "섬유보강 혼합경량토의 역학적 특성 비교", 한국해양공학회지, 22(4), pp.51~58 (2008), 한국해양공학회
- Kong, K. Y., "Unconfined Compressive Strength of Fiberreinforced Cemented Sands by Fiber Reinforcement Form", Journal of the Korean Geotechnical Society, 23(8), pp.159~169 (2001)
- 박성식, "섬유의 보강 형태에 따른 섬유-시멘트 혼합토의 일축압축강도특성", 한국지반공학회논문집, 23(8), pp.159~169 (2007), 한국지반공학회
- 박성식, "단섬유를 사용한 시멘트 혼합토의 일축압축강도 특성", 대한토목학회 논문집C, 28(4), pp.213~220 (2008), 대한토목학회
- Sabry A. S., "Long-term Strength and Durability of Soil Cement", Journal of Materials in Civil Engineering, 13(3), pp.161~166 (2001)
- 송창섭, "보강 혼합토의 역학적 특성(II) - 섬유 혼합토 -", 한국환경복원기술학회지, 5(6), pp.37~42 (2002), 한국환경복원기술학회
- 임종철, "원료토의 특성에 따른 경량기포혼합토의 압축강도 영향인자 분석", 한국지반공학회논문집, 24(11), pp.157~166 (2008), 한국지반공학회[DOI]
- Venkatarama R. B., "Optimum Soil Grading for the Soil- Cement", Journal of Materials in Civil Engineering, 19(2), pp.139~148 (2007)
- Youn, J. H., "Portland Cement Paste and Concrete", pp.39~55 (2000), Segin Ltd.