Flexural behaviour of amorphous micro-steel fibre-reinforced cement composites

Title
Flexural behaviour of amorphous micro-steel fibre-reinforced cement composites
Author(s)
강주원원종필[원종필]홍병탁[홍병탁]최태훈[최태훈]이수진[이수진]
Keywords
MECHANICAL-PROPERTIES; CONCRETE
Issue Date
201203
Publisher
ELSEVIER SCI LTD
Citation
COMPOSITE STRUCTURES, v.94, no.4, pp.1443 - 1449
Abstract
In this study, the flexural behaviour of thin micro-steel fibre of low specific gravity was evaluated. Micro-steel fibre has higher strength, toughness, and elasticity than conventional steel fibre. Flexural tests were carried out using 0.2%, 0.3%, 0.4%, 0.5%, 0.7%, and 1% fibre volume fractions (V-f). The flexural strength and flexural toughness of micro-steel fibre-reinforced cement composites were superior to those of steel fibre-reinforced cement composites. Flexural strength increased by 20%, 37%, 33%, 41%, 47%, and 48% in micro-steel fibre-reinforced cement composites with 0.2%, 0.3%, 0.4%, 0.5%, 0.7%, and 1% V-f, respectively, compared with steel fibre-reinforced cement composites of the same V. The 0.2% and 0.3% volume fractions did not significantly affect flexural toughness. However, flexural toughness increased by 39%, 56%, 44%, and 36% in amorphous steel fibre-reinforced cement composites with 0.4%, 0.5%, 0.7%, and 1.0% V-f, respectively, compared with steel fibre-reinforced cement composites of the same V-f. (C) 2011 Elsevier Ltd. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/29518http://dx.doi.org/10.1016/j.compstruct.2011.11.031
ISSN
0263-8223
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건축학부 > 건축학부 > Articles
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