Bonding properties of amorphous micro-steel fibre-reinforced cementitious composites

Bonding properties of amorphous micro-steel fibre-reinforced cementitious composites This study evaluated the bonding properties between thin amorphous micro-steel fibres and cement composite materials. Bonding properties were determined using the pull-out test according to JCI SF-8. The type and number of fibres, along with the strength of the cement matrix, were selected as test variables. Using the bond strength test, the performance of amorphous micro-steel fibre and hooked-type steel fibre was compared. The bond strength test results with mortar showed that the maximum pull-out load of amorphous micro-steel fibre was larger than that of hooked-type steel fibre. These results were attributable to the higher tensile strength of the amorphous micro-steel fibre. However, the interfacial toughness and bond strength were greater in hooked-type steel fibre due to the fibre shape and surface texture. Additionally, the high-strength mortar exhibited enhanced bonding behaviour compared with typical mortar, regardless of fibre type, suggesting that the interface between the fibre and the matrix was strengthened as the matrix strength increased. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Composite Structures Elsevier

Bonding properties of amorphous micro-steel fibre-reinforced cementitious composites

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Publisher
Elsevier
Copyright
Copyright © 2013 Elsevier Ltd
ISSN
0263-8223
eISSN
1879-1085
D.O.I.
10.1016/j.compstruct.2013.02.015
Publisher site
See Article on Publisher Site

Abstract

This study evaluated the bonding properties between thin amorphous micro-steel fibres and cement composite materials. Bonding properties were determined using the pull-out test according to JCI SF-8. The type and number of fibres, along with the strength of the cement matrix, were selected as test variables. Using the bond strength test, the performance of amorphous micro-steel fibre and hooked-type steel fibre was compared. The bond strength test results with mortar showed that the maximum pull-out load of amorphous micro-steel fibre was larger than that of hooked-type steel fibre. These results were attributable to the higher tensile strength of the amorphous micro-steel fibre. However, the interfacial toughness and bond strength were greater in hooked-type steel fibre due to the fibre shape and surface texture. Additionally, the high-strength mortar exhibited enhanced bonding behaviour compared with typical mortar, regardless of fibre type, suggesting that the interface between the fibre and the matrix was strengthened as the matrix strength increased.

Journal

Composite StructuresElsevier

Published: Aug 1, 2013

References

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