Influence of BaSO4 on properties of Portland clinker

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F19%3AN0000061" target="_blank" >RIV/26232511:_____/19:N0000061 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Influence of BaSO4 on properties of Portland clinker
Original language description
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.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
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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Number of pages
11
Pages from-to
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Publisher name
Research Institute of Binding Materials Prague Ltd.
Place of publication
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Event location
Prague, Czech Republic
Event date
Sep 16, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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