Study of damage extent to glass fibre in glass-fibre fabric reinforcement during exposure simulating concrete pore solution
| Autor: | Tomáš Bittner, J. Müllerová, Petr Pokorný, Petr Bouška, Tomáš Mandlík, Jiří Kolísko, Miroslav Vokáč |
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| Jazyk: | čeština |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Materials science 05 social sciences Glass fiber Industrial chemistry Engineering (General). Civil engineering (General) 01 natural sciences 010608 biotechnology 0502 economics and business General Materials Science Composite material TA1-2040 Reinforcement 050203 business & management |
| Zdroj: | Koroze a Ochrana Materialu, Vol 61, Iss 4, Pp 131-142 (2017) |
| ISSN: | 1804-1213 |
| Popis: | The paper evaluates extent of corrosion damage to composite glass-fibre fabric reinforcement in environment simulating concrete pore solutions (pH 12.6, 13.0, 13.5) and carbonated concrete contaminated with chlorides (pH 8.1 + Cl-) using the FT-IR and SEM/EDS techniques. Also, the effect of corrosion damage on tensile strength of segmented glass fibre as well as the presence of specific protective organic coating on glass fibre were studied. The results demonstrate local corrosion damage of samples at pH 13.5 and on the other hand high stability in environment simulating carbonated concrete and carbonated concrete contaminated with chlorides. The study also suggests unevenness of organic coating with occurrence of localized porosity which is related to aforementioned corrosion damage. Corrosion damage in FT-IR spectra manifests by changes in peaks signalling hydrolysis of protective organic coating and occurrence of peaks suggesting presence of Ca2+ rich corrosion products. |
| Databáze: | OpenAIRE |
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