Application of dilatometric analysis to the study of autoclaved calcium silicate materials

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F17%3AN0000030" target="_blank" >RIV/26232511:_____/17:N0000030 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/https://doi.org/10.1007/s10973-017-6882-3" target="_blank" >http://dx.doi.org/https://doi.org/10.1007/s10973-017-6882-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/https://doi.org/10.1007/s10973-017-6882-3" target="_blank" >https://doi.org/10.1007/s10973-017-6882-3</a>

Result language

angličtina

Original language name

Application of dilatometric analysis to the study of autoclaved calcium silicate materials

Original language description

The process of shrinkage of calcium silicate hydrate was investigated by dilatometry up to 350 °C. The properties of this material are based on the formation of C–S–H phases during the reaction at temperatures between 180 and 205 °C and water vapor pressure lower than 16 bars. The main C–S–H phases are 11.3 Å tobermorite and xonotlite. 11.3 Å tobermorite converts to 9.3 Å tobermorite on air at temperatures around 300 °C. The hydrosilicate materials were prepared from quicklime and finely ground sand with different CaO/SiO2 ratios under different hydrothermal conditions. The reaction time was 24 h. Materials based on xonotlite and tobermorite were produced, and the calcium silicate phases were characterized by XRD and TG/DTA methods. Dilatometry measurements were used to study the effect of heating conditions on sample shrinkage. Dehydration of hydrated calcium silicate minerals occurred during heating. The results show that sample shrinkage is dependent on the type and amount of C–S–H phases, the amount of bound water and formation of 9.3 Å tobermorite. All samples showed shrinkage after heating up to 350 °C, but this change was not irreversible for all samples after cooling to room temperature.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

20500 - Materials engineering

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Name of the periodical

Journal of Thermal Analysis and Calorimetry

ISSN

1588-2926

e-ISSN

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Volume of the periodical

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Issue of the periodical within the volume

11 December 2017

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

6

Pages from-to

1-6

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85037716080