Publication detail

The influence of starting materials´ solubility on tobermorite structure formation under the hydrothermal conditions

GALVÁNKOVÁ, L. BARTONÍČKOVÁ, E. OPRAVIL, T. TKACZ, J. PTÁČEK, P.

Original Title

The influence of starting materials´ solubility on tobermorite structure formation under the hydrothermal conditions

Type

conference paper

Language

English

Original Abstract

Overall, the tobermorite mineral crystallises under the hydrothermal conditions from the CaO-SiO2-H2O system. The system of calcium hydrosilicates species is extremely complex and many factors play an important role. The solubility of starting materials belongs to one of the most important factors. Dissolution rates of SiO2 source are significantly affected by their particle size distribution. Also the starting cation´s concentration in the aqueous solution affects the yield of the hydrothermal reaction. The main aim of this contribution is to study the influence of water-to-solid ratio on tobermorite crystallization. The effect of particle size of various sources of SiO2 was also studied. The cost effective Ca and Si sources was primarily favoured. The C/S ratio of the experiments was set to 0.83. All syntheses were performed at 180 °C in laboratory steel autoclaves. The prepared powdered samples were characterized in order to determine the phase composition by using of X-Ray diffractometry. The thermal behaviour of prepared samples was studied by TG-DTA analyser. Morphology and particle size of synthetized powdered products was studied by scanning electron microscopy.

Keywords

calcium hydrosilicates, tobermorite, hydrothermal synthesis

Authors

GALVÁNKOVÁ, L.; BARTONÍČKOVÁ, E.; OPRAVIL, T.; TKACZ, J.; PTÁČEK, P.

Released

12. 7. 2018

Publisher

IOP Publishing

Location

Blansko-Češkovice

ISBN

1757-899X

Periodical

IOP Conference Series: Materials Science and Engineering

Year of study

379

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

7

Pages count

7

URL

http://iopscience.iop.org/article/10.1088/1757-899X/379/1/012001

Full text in the Digital Library

http://hdl.handle.net/11012/84297

BibTex

@inproceedings{BUT148880,
  author="Lucie {Dlabajová} and Eva {Bartoníčková} and Tomáš {Opravil} and Jakub {Tkacz} and Petr {Ptáček}",
  title="The influence of starting materials´ solubility on tobermorite structure formation under the hydrothermal conditions",
  booktitle="International Conference Building Materials, Products and Technologies
29–31 May 2018, Blansko-Češkovice, Czech Republic",
  year="2018",
  journal="IOP Conference Series: Materials Science and Engineering",
  volume="379",
  pages="1--7",
  publisher="IOP Publishing",
  address="Blansko-Češkovice",
  doi="10.1088/1757-899X/379/1/012001",
  issn="1757-899X",
  url="http://iopscience.iop.org/article/10.1088/1757-899X/379/1/012001"
}