Pozzolanic activity of low-quality clays by Frattini test

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43928418" target="_blank" >RIV/60461373:22310/23:43928418 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22810/23:43928418

Výsledek na webu

<a href="http://dx.doi.org/10.14644/EC2023.009" target="_blank" >http://dx.doi.org/10.14644/EC2023.009</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14644/EC2023.009" target="_blank" >10.14644/EC2023.009</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Pozzolanic activity of low-quality clays by Frattini test

Popis výsledku v původním jazyce

Cement is one of the most used material in the world, including the Czech Republic. Its role in theconstruction industry is irreplaceable, but its production contributes to 5-8% of global CO2 emissions.One of the possibilities to reduce the amount of emissions is the production of blended cements thatcontain pozzolans, such as fly ash, slag, microsilica and, recently, the increasingly discussed calcinedclays. The work was focused on the characterization and study of the pozzolanic activity of “lowquality”overburden clays from the Bílina lignite mine in the Czech Republic. A very variablecomposition of clays was found from the point of view of XRD analysis, while the amount ofkaolinite in the 9 investigated samples was in the range of 5-20 wt.% and the amorphous phase was inthe range of 23-63 wt.%. By calcination the clays at a temperature of 850°C, it was found that allcalcined clays reliably exhibit pozzolanic properties using the Frattini test. By lowering the firingtemperature to 650°C, the pozzolanic activity of some samples decreased significantly.

Název v anglickém jazyce

Pozzolanic activity of low-quality clays by Frattini test

Popis výsledku anglicky

Cement is one of the most used material in the world, including the Czech Republic. Its role in theconstruction industry is irreplaceable, but its production contributes to 5-8% of global CO2 emissions.One of the possibilities to reduce the amount of emissions is the production of blended cements thatcontain pozzolans, such as fly ash, slag, microsilica and, recently, the increasingly discussed calcinedclays. The work was focused on the characterization and study of the pozzolanic activity of “lowquality”overburden clays from the Bílina lignite mine in the Czech Republic. A very variablecomposition of clays was found from the point of view of XRD analysis, while the amount ofkaolinite in the 9 investigated samples was in the range of 5-20 wt.% and the amorphous phase was inthe range of 23-63 wt.%. By calcination the clays at a temperature of 850°C, it was found that allcalcined clays reliably exhibit pozzolanic properties using the Frattini test. By lowering the firingtemperature to 650°C, the pozzolanic activity of some samples decreased significantly.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

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

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

Conference Proceedings - International Conference of European Clay Groups Association – EUROCLAY2023

ISBN

—

ISSN

2283-5954

e-ISSN

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Počet stran výsledku

6

Strana od-do

51-56

Název nakladatele

Digilabs

Místo vydání

Bari

Místo konání akce

Bari

Datum konání akce

24. 7. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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