Publication detail

Influence of Expansion on Properties and Microstructure of Calcium Silicate Composite Material

HÚŠŤAVOVÁ, J. ČERNÝ, V. DROCHYTKA, R.

Original Title

Influence of Expansion on Properties and Microstructure of Calcium Silicate Composite Material

Type

conference paper

Language

English

Original Abstract

The aim of the research was verification of influence of aeration and influence of aluminum powder on microstructure and physical mechanical properties of calcium silicate composite material. At the same time, influence of various dosages of alternative raw materials on porous structure of the composite was examined. Tested raw materials are not the ones commonly used in the technology of manufacture of calcium silicate composites, for example chamotte blocks, Lining of silica and foundry sand. It was found that influence of aeration of calcium silicate composite causes reduction of compressive strength by roughly 85%. At the same time, volume weight drops by 50%. As a consequence of the expansion, intensity of diffraction lines of tobermorite detected by X-ray diffraction analysis is reduced because of reaction of aluminum powder with calcium hydroxide. It was found that there is dependency between the amount of replacement of silica sand with foundry sand and silica, and intensity of tobermorite diffraction lines, where the intensity of the diffraction lines was reduced with increased amount of replacement.

Keywords

expansion, calcium silicate composite, aerated concrete, secondary raw materials, tobermorite

Authors

HÚŠŤAVOVÁ, J.; ČERNÝ, V.; DROCHYTKA, R.

Released

21. 6. 2019

Publisher

Trans tech publications Ltd

Location

Switzerland

ISBN

978-3-0357-1492-0

Book

Key Engineering Materials

ISBN

1013-9826

Periodical

Key Engineering Materials (print)

Year of study

808

State

Swiss Confederation

Pages from

136

Pages to

142

Pages count

7

URL

https://www.scientific.net/KEM.808.136

BibTex

@inproceedings{BUT157254,
  author="Jana {Martanová} and Vít {Černý} and Rostislav {Drochytka}",
  title="Influence of Expansion on Properties and Microstructure of Calcium Silicate Composite Material",
  booktitle="Key Engineering Materials",
  year="2019",
  journal="Key Engineering Materials (print)",
  volume="808",
  pages="136--142",
  publisher="Trans tech publications Ltd",
  address="Switzerland",
  doi="10.4028/www.scientific.net/KEM.808.136",
  isbn="978-3-0357-1492-0",
  issn="1013-9826",
  url="https://www.scientific.net/KEM.808.136"
}