Publication detail

Influence of Sintering Time with Constant Temperature on the Development of the Tricalcium Silicate Crystallinity

Jančíků Andrea, Dvořák Karel

Original Title

Influence of Sintering Time with Constant Temperature on the Development of the Tricalcium Silicate Crystallinity

Type

conference paper

Language

English

Original Abstract

The article investigates the influence of the firing time with constant temperature on the development of the tricalcium silicate crystallinity using the Scherrer's and Rietveld method. One suitable raw material mixture consisting of only pure CaCO3 and SiO2 in their specific ratio of 73.6:26.3 wt.% was selected. This raw material powder was prepared using a wet milling process in the water medium in a PULVERISETTE 6 plan mill. Based on previous research in this area, a firing temperature of 1500 °C was chosen with sintering period of 5, 10, 15 and 20 minutes in an experimental furnace with a manipulator for isothermal firing of laboratory samples developed by Dr. Chromy. This furnace requires special sample preparation, so a procedure for their preparation was designed and optimized. Thanks to this optimization, it is possible to repeatably prepare identical pellets with the exact parameters for this type of furnace. The resulting pellet weight is 73 mg at a volumetric weight of 2,285 g·cm-3. The results of the firings with different soaking times and constant temperatures showed that the sintering processes and mineral conversion occur very quickly, since after 5 minutes 30.81 wt.% of the mineral tricalcium silicate was identified and after 20 minutes the raw powder was converted to tricalcium silicate in a significant amount, i.e., 72.02 wt.%. At the same time, the crystallinity was monitored using Scherrer's method and after 20 minutes of firing, the crystallite size of tricalcium silicate reached 104.889 nm. Thus, there was a relatively rapid development of the crystallinity of Alite.

Keywords

Alite - tricalcium silicate, crystallinity, sintering period, Scherrer's method, Rietveld method

Authors

Jančíků Andrea, Dvořák Karel

Released

18. 10. 2023

Publisher

Solid State Phenomena (Volume 351)

ISBN

978-3-0364-0467-7

Book

Solid State Phenomena (Volume 351)

Edition

https://www.scientific.net/SSP.351

Edition number

351

Pages from

67

Pages to

73

Pages count

7

URL

https://www.scientific.net/SSP.351.67

BibTex

@inproceedings{BUT185260,
  author="Andrea {Jančíková} and Karel {Dvořák}",
  title="Influence of Sintering Time with Constant Temperature on the Development of the Tricalcium Silicate Crystallinity",
  booktitle="Solid State Phenomena (Volume 351)",
  year="2023",
  series="https://www.scientific.net/SSP.351",
  number="351",
  pages="67--73",
  publisher="Solid State Phenomena (Volume 351)",
  doi="10.4028/p-ti6lVW",
  isbn="978-3-0364-0467-7",
  url="https://www.scientific.net/SSP.351.67"
}