Excellent bonding behaviour of novel surface-tailored fibre composite rods with cementitious matrix

Fernando Cunha; Sohel Rana; Raul Fangueiro; Graça Vasconcelos

doi:10.1007/s12034-014-0039-9

Excellent bonding behaviour of novel surface-tailored fibre composite rods with cementitious matrix

Fernando Cunha, Sohel Rana, Raul Fangueiro, Graça Vasconcelos

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Novel composite rods were produced by a special braiding technique that involves braiding of polyester yarns around a core of resin-impregnated carbon fibres and subsequent curing. The surface roughness of these braided rods was tailored by replacing one or two simple yarns in the outer-braided layer with braided yarns (produced from 8 simple yarns) and adjusting the take-up velocity. Pull-out tests were carried out to characterize the bond behaviour of these composite rods with cementitious matrix. It was observed that the rod produced with two braided yarns in the outer cover and highest take-up speed was ruptured completely before pull-out, leading to full utilization of its tensile strength, and exhibited 134% higher pull-out force as compared to the rods produced using only simple braiding yarns.

Original language	English
Pages (from-to)	1013-1016
Number of pages	4
Journal	Bulletin of Materials Science
Volume	37
Issue number	5
DOIs	https://doi.org/10.1007/s12034-014-0039-9
Publication status	Published - 1 Aug 2014
Externally published	Yes

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title = "Excellent bonding behaviour of novel surface-tailored fibre composite rods with cementitious matrix",

abstract = "Novel composite rods were produced by a special braiding technique that involves braiding of polyester yarns around a core of resin-impregnated carbon fibres and subsequent curing. The surface roughness of these braided rods was tailored by replacing one or two simple yarns in the outer-braided layer with braided yarns (produced from 8 simple yarns) and adjusting the take-up velocity. Pull-out tests were carried out to characterize the bond behaviour of these composite rods with cementitious matrix. It was observed that the rod produced with two braided yarns in the outer cover and highest take-up speed was ruptured completely before pull-out, leading to full utilization of its tensile strength, and exhibited 134% higher pull-out force as compared to the rods produced using only simple braiding yarns.",

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AU - Cunha, Fernando

AU - Rana, Sohel

AU - Fangueiro, Raul

AU - Vasconcelos, Graça

PY - 2014/8/1

Y1 - 2014/8/1

N2 - Novel composite rods were produced by a special braiding technique that involves braiding of polyester yarns around a core of resin-impregnated carbon fibres and subsequent curing. The surface roughness of these braided rods was tailored by replacing one or two simple yarns in the outer-braided layer with braided yarns (produced from 8 simple yarns) and adjusting the take-up velocity. Pull-out tests were carried out to characterize the bond behaviour of these composite rods with cementitious matrix. It was observed that the rod produced with two braided yarns in the outer cover and highest take-up speed was ruptured completely before pull-out, leading to full utilization of its tensile strength, and exhibited 134% higher pull-out force as compared to the rods produced using only simple braiding yarns.

AB - Novel composite rods were produced by a special braiding technique that involves braiding of polyester yarns around a core of resin-impregnated carbon fibres and subsequent curing. The surface roughness of these braided rods was tailored by replacing one or two simple yarns in the outer-braided layer with braided yarns (produced from 8 simple yarns) and adjusting the take-up velocity. Pull-out tests were carried out to characterize the bond behaviour of these composite rods with cementitious matrix. It was observed that the rod produced with two braided yarns in the outer cover and highest take-up speed was ruptured completely before pull-out, leading to full utilization of its tensile strength, and exhibited 134% higher pull-out force as compared to the rods produced using only simple braiding yarns.

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Excellent bonding behaviour of novel surface-tailored fibre composite rods with cementitious matrix

Abstract

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