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Materials 2018, 11(2), 194; doi:10.3390/ma11020194

Prediction of Tensile Behavior of UHSFRC Considering the Flow Field in the Placing Dominated by Shear Flow

1
Department of Civil Engineering, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 41566, Korea
2
Department of Civil Engineering, Daegu University, 201 Daegudae-ro, Jillyang, Gyeongsan 38453, Korea
*
Author to whom correspondence should be addressed.
Received: 28 December 2017 / Revised: 16 January 2018 / Accepted: 23 January 2018 / Published: 26 January 2018
(This article belongs to the Section Advanced Composites)
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Abstract

Considering the case of fabricating a UHSFRC (ultra-high strength fiber-reinforced concrete) beam with the method of one end placing and self-flowing to the other end, it was intended to simulate the variation of the fiber orientation distribution according to the flow distance and the variation of the resultant tensile behaviors. Then the validity of the simulation approach was shown by comparing the simulated results with experimental ones. A three-point bending test with a notched beam was adopted for the experiment and a finite element analysis was performed to obtain the simulated results for the bending test considering the flow-dependent tensile behavior of the UHSFRC. From the simulation for the fiber orientation distribution according to the flow distance, it could be found that the major change in the fiber orientation distribution took place within a short flow distance and most of the fibers became nearly aligned to the flow direction. After some flow distance, there was a not-so-remarkable variation in the fiber orientation distribution that could influence the tensile behavior of the composite. For this flow region, the consistent flexural test results, regardless of flow distance, demonstrate the reliability of the simulation. View Full-Text
Keywords: UHSFRC; steel fiber; fiber orientation; shear flow; tensile behavior UHSFRC; steel fiber; fiber orientation; shear flow; tensile behavior
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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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MDPI and ACS Style

Moon, J.-S.; Kang, S.-T. Prediction of Tensile Behavior of UHSFRC Considering the Flow Field in the Placing Dominated by Shear Flow. Materials 2018, 11, 194.

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