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Appl. Sci. 2017, 7(6), 549; doi:10.3390/app7060549

Effect of Load Transfer Section to Toughness for Steel Fiber-Reinforced Concrete

School of Architecture, Seoul National University of Science & Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Korea
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Academic Editor: Dimitrios G. Aggelis
Received: 12 April 2017 / Revised: 16 May 2017 / Accepted: 16 May 2017 / Published: 26 May 2017
(This article belongs to the Section Materials)
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Abstract

This study analyzed the correlation between the load transfer properties and the overall toughness in the flexural behavior of steel fiber-reinforced concrete after concrete matrix cracking. Beam specimens with identical aspect ratios were made with three different types of steel fiber, each of which had different properties, and were used for the flexural test. The load displacement graph from the test was divided into sections by behavioral properties, and the regression model by mix was analyzed to extract the correlation between the load transfer section (concrete-fiber) and the overall toughness. The analysis results showed three types of load displacement curve based on the fiber type and fiber content, and confirmed that the load reduction section towards fiber after concrete cracking and the slope and area of the load reascension section had a huge impact on the overall toughness. The regression model of the whole toughness (Tb) was then acquired by proposing the resulting correlation as the load transfer factor (LTF). View Full-Text
Keywords: steel fiber; concrete; flexural behavior; toughness; load transfer; regression curve steel fiber; concrete; flexural behavior; toughness; load transfer; regression curve
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Han, Y.-J.; Oh, S.-K.; Kim, B. Effect of Load Transfer Section to Toughness for Steel Fiber-Reinforced Concrete. Appl. Sci. 2017, 7, 549.

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