CORROSION PROPERTIES AND BOND STRENGTH IN CONCRETE OF CONVENTIONAL PRESTRESSING STEEL REINFORCEMENT WITH PLASMA SPRAYED Si-SiC-SiO2 COATINGS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F24%3A00389517" target="_blank" >RIV/68407700:21610/24:00389517 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

CORROSION PROPERTIES AND BOND STRENGTH IN CONCRETE OF CONVENTIONAL PRESTRESSING STEEL REINFORCEMENT WITH PLASMA SPRAYED Si-SiC-SiO2 COATINGS

Popis výsledku v původním jazyce

In this study is verified the possibility of corrosion protection of conventional concrete prestressing reinforcement (Y1860 S7 15.7) by application of a protective ceramic coating based on decomposition products after plasma deposition of silicon carbide. The composition of the coating was investigated by cross-sectional scanning electron microscopy (SEM). The barrier protection properties of the silicon carbide coating (Si-SiC-SiO2) partially incongruently decomposed into elemental silicon and amorphous SiO2 were comparatively verified in NaCl solution by measuring the time dependence of the polarization resistance (R-p). Furthermore, the bond strength of coated prestressing reinforcement in normal strength concrete was comparatively tested using pull-out test arrangement. The coating provides enhanced barrier corrosion protection in an electrolyte with chloride anions. The presence of a top significantly porous coating layer reduces the bond strength in normal strength concrete by approximately 30 % for 2.0 mm slip.

Název v anglickém jazyce

CORROSION PROPERTIES AND BOND STRENGTH IN CONCRETE OF CONVENTIONAL PRESTRESSING STEEL REINFORCEMENT WITH PLASMA SPRAYED Si-SiC-SiO2 COATINGS

Popis výsledku anglicky

In this study is verified the possibility of corrosion protection of conventional concrete prestressing reinforcement (Y1860 S7 15.7) by application of a protective ceramic coating based on decomposition products after plasma deposition of silicon carbide. The composition of the coating was investigated by cross-sectional scanning electron microscopy (SEM). The barrier protection properties of the silicon carbide coating (Si-SiC-SiO2) partially incongruently decomposed into elemental silicon and amorphous SiO2 were comparatively verified in NaCl solution by measuring the time dependence of the polarization resistance (R-p). Furthermore, the bond strength of coated prestressing reinforcement in normal strength concrete was comparatively tested using pull-out test arrangement. The coating provides enhanced barrier corrosion protection in an electrolyte with chloride anions. The presence of a top significantly porous coating layer reduces the bond strength in normal strength concrete by approximately 30 % for 2.0 mm slip.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA24-12783S" target="_blank" >GA24-12783S: Studium mechanizmů a kinetiky vodíkového korozního poškození konvenční předpínací výztuže betonových mostních konstrukcí</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the 11th International Conference on Chemical Technology

ISBN

978-80-88307-21-1

ISSN

2336-811X

e-ISSN

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Počet stran výsledku

6

Strana od-do

136-141

Název nakladatele

Česká společnost chemická

Místo vydání

Praha

Místo konání akce

Mikulov

Datum konání akce

15. 4. 2024

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001678797800023