Application of dilatometric analysis to the study of autoclaved calcium silicate materialsJournal of Thermal Analysis and Calorimetry

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F18%3AN0000113" target="_blank" >RIV/26232511:_____/18:N0000113 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s10973-017-6882-3" target="_blank" >https://link.springer.com/article/10.1007/s10973-017-6882-3</a>

DOI - Digital Object Identifier

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

Jazyk výsledku

angličtina

Název v původním jazyce

Application of dilatometric analysis to the study of autoclaved calcium silicate materialsJournal of Thermal Analysis and Calorimetry

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Application of dilatometric analysis to the study of autoclaved calcium silicate materialsJournal of Thermal Analysis and Calorimetry

Popis výsledku anglicky

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.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Journal of Thermal Analysis and Calorimetry

ISSN

13886150

e-ISSN

—

Svazek periodika

Volume 133

Číslo periodika v rámci svazku

Issue 1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

399-404

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85037716080