Numéro |
J. Phys. IV France
Volume 123, March 2005
|
|
---|---|---|
Page(s) | 155 - 158 | |
DOI | https://doi.org/10.1051/jp4:2005123026 |
J. Phys. IV France 123 (2005) 155-158
DOI: 10.1051/jp4:2005123026
The durability of alkali-resistant glass fibres in cement matrix
A. Ayadi1, M. Palou2 and A. Iratni11 Department of Engineering Materials, Faculty of Engineer Sciences, University of Boumerdes, 35000 Boumerdes, Algeria
2 Department of Ceramics, Glass and Cement, Slovak University of Technology Bratislava, Slovakia
Abstract
The purpose of the paper is to investigate the
durability of glass fibres in cement matrix containing silica fume (15, 25,
40 wt. %) with emphasis on the mechanism of their interaction with
cement, to elucidate the effect of these interactions on the durability
performance of alkali resistant glass fibers and, finally, to present
observations obtained by scanning electron microscopy of the environment
attack. The accelerated procedure method, Strand in Cement (SIC), in which
the specimens are cured at hydrothermal conditions has been applied and the
results were used to predict long term behaviour of these glass fibers.
AR-glass based on ZrO2 is alkaline resistant, but it deteriorates
during prolonged wet cure. Silica fume, due to its pozzolanic properties has
decreased the alkalinity of cement matrix by reacting with Ca(OH)2. The
treatment of alkali resistant glass fibers with silica fume was effective in
improving durability performances of glass fibres in cement matrix and
fibres reinforced cement composites.
Key words: Glass fibres, cement composites, durability, accelerated test, breaking load, microstructure, pH.
© EDP Sciences 2005