Publication detail

Multi-filament yarns testing for textile-reinforced concrete

KADĚROVÁ, J. VOŘECHOVSKÝ, M.

Original Title

Multi-filament yarns testing for textile-reinforced concrete

Type

conference paper

Language

English

Original Abstract

The present paper copes with an experimental study of multi-filament yarns made of AR-glass which are used for textile-reinforced concrete. The behavior under tensile loading was investigated by laboratory tests. A high number of yarn specimens (over 300) of six different lengths ranging from 1 cm to 74 cm was tested to obtain statistically significant data which were subsequently corrected and statistically processed. The behavior of the yarn was predicted by the studied numerical model of the multi-filament bundle that was applied also for the later results interpretation. The model of n parallel filaments describes the behavior of a bundle with varying parameters representing different sources of disorder of the response. The aim of the carried experiment was to validate the model presumptions and to identify the model parameters to fit the real load-displacement curves. Due to a distortion of the measured displacements caused by the unstiff experiment device, only the maximal load values were statistically evaluated and the identification of the model parameters was not successful. The effect of the specimen length on its strength was demonstrated and the size effect curve did not exclude the existence of spatial correlation of material mechanical properties modifying the classical statistical Weibull theory.

Keywords

filament, bundle model, size effect, Weibull theory, experiment, AR-glass yarns

Authors

KADĚROVÁ, J.; VOŘECHOVSKÝ, M.

RIV year

2012

Released

5. 6. 2012

Publisher

Czech Technical University in Prague, Faculty of Transportation Sciences

Location

Telč, Česká republika

ISBN

978-80-01-05062-0

Book

XIIIth Bilateral Czech/German Symposium

Pages from

43

Pages to

46

Pages count

4

BibTex

@inproceedings{BUT93343,
  author="Jana {Kaděrová} and Miroslav {Vořechovský}",
  title="Multi-filament yarns testing for textile-reinforced concrete",
  booktitle="XIIIth Bilateral Czech/German Symposium",
  year="2012",
  pages="43--46",
  publisher="Czech Technical University in Prague, Faculty of Transportation Sciences",
  address="Telč, Česká republika",
  isbn="978-80-01-05062-0"
}