Supersulphated cements from waste materials

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F22%3APU147218" target="_blank" >RIV/00216305:26310/22:PU147218 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27120/22:10251705

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Supersulphated cements from waste materials

Popis výsledku v původním jazyce

Supersulphated cements are considered to be one of the first alkali-activated cements. Ground granulated blast-furnace slag is activated with a small amount of Portland cement in the presence of gypsum, providing C-S-H gel and ettringite as the main reaction products. These materials exhibit some good properties; the most important of these being good sulphate resistance and also good environmental effects. Standard EN15743+A1 "Supersulphated cement" describes the conditions for the composition of this binder. In this paper, the product after desulphurisation (PPR) from the Třebovice heating plant (Ostrava) was used as a source of gypsum. Strength development was recorded up to 91 days for different ratios of compounds. Early strengths are very low and are higher for higher ordinary Portland cement content. At 28 and 91 days of age the strengths are almost the same for gypsum contents from 10 to 20% and all cement contents (2.5, 3.75% and 5%). These strengths are relatively high - around 50 MPa. Supersulphated cements can be a good choice for the use of waste material - the product after desulphurisation.

Název v anglickém jazyce

Supersulphated cements from waste materials

Popis výsledku anglicky

Supersulphated cements are considered to be one of the first alkali-activated cements. Ground granulated blast-furnace slag is activated with a small amount of Portland cement in the presence of gypsum, providing C-S-H gel and ettringite as the main reaction products. These materials exhibit some good properties; the most important of these being good sulphate resistance and also good environmental effects. Standard EN15743+A1 "Supersulphated cement" describes the conditions for the composition of this binder. In this paper, the product after desulphurisation (PPR) from the Třebovice heating plant (Ostrava) was used as a source of gypsum. Strength development was recorded up to 91 days for different ratios of compounds. Early strengths are very low and are higher for higher ordinary Portland cement content. At 28 and 91 days of age the strengths are almost the same for gypsum contents from 10 to 20% and all cement contents (2.5, 3.75% and 5%). These strengths are relatively high - around 50 MPa. Supersulphated cements can be a good choice for the use of waste material - the product after desulphurisation.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název statě ve sborníku

SP-355: Recent Advances in Concrete Technology and Sustainability Issues

ISBN

978-1-64195-184-5

ISSN

0193-2527

e-ISSN

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Počet stran výsledku

8

Strana od-do

375-382

Název nakladatele

American Concrete Institute

Místo vydání

Milán

Místo konání akce

Milán

Datum konání akce

13. 7. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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