Influence of BaSO4 on properties of Portland clinker

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of BaSO4 on properties of Portland clinker

Popis výsledku v původním jazyce

Production of Portland clinker can be negatively affected by undesirable compounds. One of them is barium oxide. Thermal treatment of most of the barium compounds yields barium oxide, the only exception is BaSO4. This work is focused on the influence of barium oxide with and without sulphates on properties of Portland clinker. Barium sulphate and barium carbonate were added to raw meal in different amounts. The influence of barium oxide together with sulphates was studied on samples with BaSO4 and BaO with SO3 in separate compounds – BaCO3 and CaSO4∙2H2O. Barium oxide in raw meal leads to change in phase composition of clinker, amount of alite decreases at the expense of belite and free lime. Using BaSO4, trend of phase composition has the same tendency with slower development. Moreover, using sulphates, dimensions of alite increase to great values. Comparing microstructure and thermal analysis of clinkers with BaSO4 and with BaO and sulphates in separate compounds, the influence is almost the same. Although BaSO4 does not decompose during the burning process, the clinker is influenced by both, BaO and SO3.

Název v anglickém jazyce

Influence of BaSO4 on properties of Portland clinker

Popis výsledku anglicky

Production of Portland clinker can be negatively affected by undesirable compounds. One of them is barium oxide. Thermal treatment of most of the barium compounds yields barium oxide, the only exception is BaSO4. This work is focused on the influence of barium oxide with and without sulphates on properties of Portland clinker. Barium sulphate and barium carbonate were added to raw meal in different amounts. The influence of barium oxide together with sulphates was studied on samples with BaSO4 and BaO with SO3 in separate compounds – BaCO3 and CaSO4∙2H2O. Barium oxide in raw meal leads to change in phase composition of clinker, amount of alite decreases at the expense of belite and free lime. Using BaSO4, trend of phase composition has the same tendency with slower development. Moreover, using sulphates, dimensions of alite increase to great values. Comparing microstructure and thermal analysis of clinkers with BaSO4 and with BaO and sulphates in separate compounds, the influence is almost the same. Although BaSO4 does not decompose during the burning process, the clinker is influenced by both, BaO and SO3.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20500 - Materials engineering

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Papers and posters proceedings 15th International Congress on the Chemistry of Cement

ISBN

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ISSN

2523-935X

e-ISSN

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Počet stran výsledku

11

Strana od-do

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Název nakladatele

Research Institute of Binding Materials Prague Ltd.

Místo vydání

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Místo konání akce

Prague, Czech Republic

Datum konání akce

16. 9. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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