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The Effects Of Aggregate Sizes And Fiber Volume Fraction On Bending Toughness And Direct Tension Of Steel Fiber Reinforced Concrete

Authors: Hyun-Woo Cho; Jae-Heum Moon; Jang-Hwa Lee;

The Effects Of Aggregate Sizes And Fiber Volume Fraction On Bending Toughness And Direct Tension Of Steel Fiber Reinforced Concrete

Abstract

{"references": ["Kyu-Gun Kim, Cha-Don Lee, Jong-Sung Shim, Gi-Bong Choi, Jae-Sun\nPark (1994) Theory Research on Tensile Fracture Mechanism of Steel\nFiber Reinforced Concrete, Thesis Collection of Korean Concrete\nConference, Vol.5 No.2, pp.140\u00d4\u00ea\u255d150", "Seo-Ho Jung, Hong-Yon Park (2007) Experimental Research on\nBending-Compression Behavior of SFRC, 2007 Thesis Collection\nRegular Conference for Society of Civil Engineers, pp. 2346\u00d4\u00ea\u255d2349", "Hyun-Ho Lee, Hwan-Jin Lee (2004) Strength and Deformation Properties\nof SFRC considering steel factors and volume fraction, Thesis Collection\nof Korean Concrete Conference, Vol.16 No.6, pp. 759\u00d4\u00ea\u255d766", "Dong-Joo Kim, \"Influence of Number of Twist on Tensile Behavior of\nHigh Performance Fiber Reinforced Cementitious Composites with\nTwisted Steel Fibers\", Korea Concrete Institute, Vol. 22, No.4\n,pp.575-583 (2010).", "RILEM Committee on Fracture Mechanics of Concrete-Test Methods,\n\"Determination of the Fracture Energy of Mortar and Concrete by Means\nof Tree-Point Bend Tests on Notched Beams\",\nMaterialsandStructures,Vol.18,No.106,pp.285-290(1985)", "Dong-Joo Kim, \"Measurement of Tensile Properties of Fiber Reinforced\nConcrete\", KoreaConcreteInstitute,Vol.21,No.6,pp.94-97(2009).", "Gyu-Seon Kim et al., \"Analysis on the Fracture Mechanisms of SFRC\nunder Tension\", KoreaConcreteInstitute,Vol.5,No.2,pp.140-150(1994).", "Shah. S. P., Rangan. B. V., \"Fiber Reinforced Concrete Properties\", J. of\nACI, Vol. 68, No.2, pp.126-135(1971).", "Karihaloo, B. L. and Nallathambi, P., \"An Improved Effective Crack\nModel for the Determination of Fracture Toughness of Concrete\",\nCementandConcreteResearch,Vol.19,pp.603-610(1989)."]}

In order to supplement the brittle property of concrete, fibers are added into concrete mixtures. Compared to general concrete, various characteristics such as tensile strength, bending strength, bending toughness, and resistance to crack are superior, and even when cracks occur, improvements on toughness as well as resistance to shock are excellent due to the growth of fracture energy. Increased function of steel fiber reinforced concrete can be differentiated depending on the fiber dispersion, and sand percentage can be an important influence on the fiber dispersion. Therefore, in this research, experiments were planned on sand percentage in order to apprehend the influence of sand percentage on the bending properties and direct tension of SFRC and basic experiments were conducted on bending and direct tension in order to recognize the properties of bending properties and direct tension following the size of the aggregates and sand percentage.

Keywords

Bending Toughness, Direct tension., Steel Fiber Reinforced Concrete

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