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Tensile fracture properties of an Ultra High Performance Fiber Reinforced Concrete (UHPFRC) with steel fiber

Title
Tensile fracture properties of an Ultra High Performance Fiber Reinforced Concrete (UHPFRC) with steel fiber
Authors
Kang S.-T.Lee Y.Park Y.-D.Kim J.-K.
Ewha Authors
이윤
Issue Date
2010
Journal Title
Composite Structures
ISSN
0263-8223JCR Link
Citation
vol. 92, no. 1, pp. 61 - 71
Indexed
SCIE; SCOPUS WOS scopus
Abstract
This paper presents a study of the tensile fracture properties of Ultra High Performance Fiber Reinforced Concrete (UHPFRC) considering the effects of the fiber content. To investigate the impact of fiber content, notched 3-point bending tests were executed, where the fiber volume ratio was varied from 0% to 5%. From the bending tests, it was found that the flexural tensile strength of UHPFRC linearly increases with increasing fiber volume ratio and the rule of mixture can be applied to UHPFRC. Furthermore, an inverse analysis was performed to determine the tensile fracture model of UHPFRC and a tri-linear tensile softening model is suggested. The suggested model successfully represents the increase of the stress-constant bridging zone and the decrease of the stress-resisting zone with increasing fiber content. The proposed model for various fiber content levels is simple and versatile and can be readily applied to structural design or numerical analysis of UHPFRC. © 2009 Elsevier Ltd. All rights reserved.
DOI
10.1016/j.compstruct.2009.06.012
Appears in Collections:
엘텍공과대학 > 건축공학전공 > Journal papers
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