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Proceedings Paper

Characterization of bond performance of textiles in cement matrices using fiber optic sensors
Author(s): Matthias I. Molter; Josef Hegger; Wolfgang R. Habel; Detlef Hofmann; Toivo Gutmann; Frank Basedau
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Paper Abstract

The bond behavior of textiles embedded in concrete and consisting of multi filament yarns (rovings) differs from that of homogenous materials such as steel. Test results published in the literature as well as own investigations revealed that, for textile reinforced concrete, it has to be distinguished between external and internal bond of the fibers (filaments). The outer filaments which have direct contact to the cement matrix show a good bonding performance. In contrast to this, the inner filaments (core filaments) of a roving transfer forces only by friction, resulting in a less bonding to the surrounding matrix. In order to confirm such a bonding model, strain and slip measurements at single filaments are necessary in pull-out-samples. However, such measurements are not possible with strain gauges usually used in structural engineering. Therefore, strains in outer and inner filaments as well as in the cement matrix of selected samples are measured by using flexible Fabry-Perot fiber interferometer sensors.

Paper Details

Date Published: 27 June 2002
PDF: 6 pages
Proc. SPIE 4694, Smart Structures and Materials 2002: Smart Sensor Technology and Measurement Systems, (27 June 2002); doi: 10.1117/12.472626
Show Author Affiliations
Matthias I. Molter, RWTH-Aachen (Germany)
Josef Hegger, RWTH-Aachen (Germany)
Wolfgang R. Habel, Federal Institute for Materials Research and Testing (Germany)
Detlef Hofmann, Federal Institute for Materials Research and Testing (Germany)
Toivo Gutmann, Federal Institute for Materials Research and Testing (Germany)
Frank Basedau, Federal Institute for Materials Research and Testing (Germany)


Published in SPIE Proceedings Vol. 4694:
Smart Structures and Materials 2002: Smart Sensor Technology and Measurement Systems
Daniele Inaudi; Eric Udd, Editor(s)

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