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Durability of Alkali-Resistant Glass Fibers Reinforced Cement Composite: Microstructural Observations of Degradation

Periodica Polytechnica Civil Engineering, 2018-01, Vol.62 (3), p.653 [Peer Reviewed Journal]

Copyright Periodica Polytechnica, Budapest University of Technology and Economics 2018 ;Distributed under a Creative Commons Attribution 4.0 International License ;ISSN: 0553-6626 ;ISSN: 1587-3773 ;EISSN: 1587-3773 ;DOI: 10.3311/PPci.10631

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Title:
Durability of Alkali-Resistant Glass Fibers Reinforced Cement Composite: Microstructural Observations of Degradation
Author: Arabi, Nourredine ; Molez, Laurent ; Rangeard, Damien
Subjects: Alkali resistance tests ; Cement ; Cement reinforcements ; Civil Engineering ; Composite materials ; Concrete ; Degradation ; Durability ; Ecological risk assessment ; Engineering Sciences ; Fibers ; Fumes ; Glass ; Glass fibers ; Matériaux composites et construction ; Microstructure ; Silica ; Silicon dioxide ; Toughness ; X-ray diffraction ; Zirconium ; Zirconium oxides
Is Part Of: Periodica Polytechnica Civil Engineering, 2018-01, Vol.62 (3), p.653
Description: Usually, glass fibers in concrete permit the increase of the flexural strength. But the fibers in contact with cement are quickly degraded by alkali reactions due to the presence of portlandite. This article presents the results of investigations carried out to study the influence of curing conditions on the durability of alkali-resistant glass fibers in a cement matrix. Test results showed that alkali resistant fibers treated with zirconium oxide, present the same degradation phenomenon. The used cement nature has a large influence on the protection of the fibers. In addition, the degradation is weakened when silica fumes are added, owing to the pozzolanic effect that decreases the portlandite quantity. In spite of those different ameliorations, the use of such materials in humid environment is proving to be risky. The used techniques to study those phenomena are SEM equipped with energy dispersive spectrometer (EDX) to observe the attack microstructures of the fibers and X-ray diffraction to quantify the portlandite and other phase development.
Publisher: Budapest: Periodica Polytechnica, Budapest University of Technology and Economics
Language: English
Identifier: ISSN: 0553-6626
ISSN: 1587-3773
EISSN: 1587-3773
DOI: 10.3311/PPci.10631
Source: Hyper Article en Ligne (HAL) (Open Access)
Alma/SFX Local Collection
ProQuest Central

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Durability of Alkali-Resistant Glass Fibers Reinforced Cement Composite: Microstructural Observations of Degradation

Copyright Periodica Polytechnica, Budapest University of Technology and Economics 2018 ;Distributed under a Creative Commons Attribution 4.0 International License ;ISSN: 0553-6626 ;ISSN: 1587-3773 ;EISSN: 1587-3773 ;DOI: 10.3311/PPci.10631

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