The effect of fibre distribution characteristics on the flexural strength of steel fibre-reinforced ultra high strength concrete

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Fibre distribution characteristics were evaluated to investigate their effect on the flexural strength of steel fibre-reinforced ultra high strength concrete in conjunction with the direction of placement. For this purpose, an image processing technique developed in this study was employed. Flexural tests were carried out to quantify the effect of fibre distribution characteristics on flexural strength. It was found that the image processing technique developed in this study could quantitatively evaluate the fibre distribution property by the use of the distribution coefficient, the number of fibres in a unit area, the packing density of the fibre image, and fibre orientation. It was also found that the fibre distribution characteristics were dependent on the direction of placing. Fibre distribution characteristics were revealed to strongly affect the ultimate flexural strength, while hardly affecting the first cracking strength. The validity of the current test results was verified through comparison with a theoretical model of flexural strength. (C) 2010 Elsevier Ltd. All rights reserved.
Publisher
Elsevier Sci Ltd
Issue Date
2011-05
Language
English
Article Type
Article
Keywords

MECHANICAL-PROPERTIES; BRITTLE MATRICES; IMAGE-ANALYSIS; DISPERSION; COMPOSITES

Citation

CONSTRUCTION AND BUILDING MATERIALS, v.25, no.5, pp.2450 - 2457

ISSN
0950-0618
URI
http://hdl.handle.net/10203/25125
Appears in Collection
CE-Journal Papers(저널논문)
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