期刊
COMPOSITE STRUCTURES
卷 94, 期 4, 页码 1443-1449出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2011.11.031
关键词
Amorphous steel fibre; Flexural behaviour; Micro-steel fibre
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.
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