Functionality of two-two coat system for concrete protection and repair

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F24%3A00379992" target="_blank" >RIV/68407700:21110/24:00379992 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.5593/sgem2024/6.1/s26.37" target="_blank" >https://doi.org/10.5593/sgem2024/6.1/s26.37</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2024/6.1/s26.37" target="_blank" >10.5593/sgem2024/6.1/s26.37</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Functionality of two-two coat system for concrete protection and repair

Popis výsledku v původním jazyce

This paper presents the experimental evaluation of the effectiveness of a newly developed two-coat system (TCS) for the protection and repair of concrete. The optimized system consists of a penetrating layer of modified low-viscosity resin of BPA (bisphenol A) type and a top coat based on aliphatic polyisocyanate resin of HDI (hexametyl diisocyanate) type. TCS was applied to reference concrete specimens, which were subjected to various tests to evaluate their basic physical properties, mechanical strength, hygric properties, freeze-thaw resistance and resistance to de-icing salts. The application of TCS reduced the porosity, enhanced the freeze-thaw resistance, and greatly decreased the water absorption coefficient and 24-h water absorption. The treated specimens exhibited high resistance to de-icing salt even up to 125 testing cycles. Taking into consideration the fact that the control samples without any surface modification were completely cracked by coupled salt crystallization and freeze-thaw action, the improvement in the properties of treated concrete was quite substantial and promising for full-scale application on construction sites.

Název v anglickém jazyce

Functionality of two-two coat system for concrete protection and repair

Popis výsledku anglicky

This paper presents the experimental evaluation of the effectiveness of a newly developed two-coat system (TCS) for the protection and repair of concrete. The optimized system consists of a penetrating layer of modified low-viscosity resin of BPA (bisphenol A) type and a top coat based on aliphatic polyisocyanate resin of HDI (hexametyl diisocyanate) type. TCS was applied to reference concrete specimens, which were subjected to various tests to evaluate their basic physical properties, mechanical strength, hygric properties, freeze-thaw resistance and resistance to de-icing salts. The application of TCS reduced the porosity, enhanced the freeze-thaw resistance, and greatly decreased the water absorption coefficient and 24-h water absorption. The treated specimens exhibited high resistance to de-icing salt even up to 125 testing cycles. Taking into consideration the fact that the control samples without any surface modification were completely cracked by coupled salt crystallization and freeze-thaw action, the improvement in the properties of treated concrete was quite substantial and promising for full-scale application on construction sites.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/FW03010256" target="_blank" >FW03010256: Vývoj a výzkum pokročilých materiálů pro ochranu a opravu betonových 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 24th International Multidisciplinary Scientific GeoConference SGEM 2024

ISBN

978-619-7603-74-3

ISSN

1314-2704

e-ISSN

1314-2704

Počet stran výsledku

7

Strana od-do

—

Název nakladatele

STEF92 Technology Ltd.

Místo vydání

Sofia

Místo konání akce

Albena

Datum konání akce

29. 6. 2024

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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