DEGRADATION of A SULFOCALCIC BINDER in A MIXTURE with CEMENT DUE to FREEZING and THAWING

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43925364" target="_blank" >RIV/60461373:22310/22:43925364 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22810/22:43925364 RIV/68407700:21110/22:00364109

Výsledek na webu

<a href="https://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1591" target="_blank" >https://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1591</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13168/cs.2022.0041" target="_blank" >10.13168/cs.2022.0041</a>

Jazyk výsledku

angličtina

Název v původním jazyce

DEGRADATION of A SULFOCALCIC BINDER in A MIXTURE with CEMENT DUE to FREEZING and THAWING

Popis výsledku v původním jazyce

The paper deals with the freeze-thaw (F-T) resistance of pastes prepared from a mixture of Portland cement (CEM) and a new clinker-free calcium sulfate binder (SCB) based on sulfocalcic fly ash (FBC ash). Pastes with varying ratios of these two binders were prepared and their F-T corrosion resistance in water and a 3 % NaCl solution was investigated. Furthermore, the paste aeration effect on the F-T resistance and the change in the phase composition of the paste during F-T cycling was studied. The results showed that the F-T resistance of the CEM-SCB mixtures was higher compared to the pastes prepared from the unmixed binders alone. All the mixed CEM-SCB pastes showed an undisturbed or slightly disturbed surface in both the water and 3 % NaCl environments, i.e., excellent F-T corrosion resistance after 100 and 200 F-T cycles in an environmental test chamber. A change in the ettringite content over time was observed. © 2022 University of Chemistry and Technology, Faculty of Environmental Technology. All rights reserved.

Název v anglickém jazyce

DEGRADATION of A SULFOCALCIC BINDER in A MIXTURE with CEMENT DUE to FREEZING and THAWING

Popis výsledku anglicky

The paper deals with the freeze-thaw (F-T) resistance of pastes prepared from a mixture of Portland cement (CEM) and a new clinker-free calcium sulfate binder (SCB) based on sulfocalcic fly ash (FBC ash). Pastes with varying ratios of these two binders were prepared and their F-T corrosion resistance in water and a 3 % NaCl solution was investigated. Furthermore, the paste aeration effect on the F-T resistance and the change in the phase composition of the paste during F-T cycling was studied. The results showed that the F-T resistance of the CEM-SCB mixtures was higher compared to the pastes prepared from the unmixed binders alone. All the mixed CEM-SCB pastes showed an undisturbed or slightly disturbed surface in both the water and 3 % NaCl environments, i.e., excellent F-T corrosion resistance after 100 and 200 F-T cycles in an environmental test chamber. A change in the ettringite content over time was observed. © 2022 University of Chemistry and Technology, Faculty of Environmental Technology. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/FW01010195" target="_blank" >FW01010195: Pokročilé výrobní technologie pro strategické využití a skladování vedlejších energetických produktů (VEP)</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Ceramics-Silikáty

ISSN

0862-5468

e-ISSN

1804-5847

Svazek periodika

66

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

9

Strana od-do

167-175

Kód UT WoS článku

000857300600001

EID výsledku v databázi Scopus

2-s2.0-85138476632