Publication detail

The Influence of Sulfates on Tobermorite Formation in Lime-Ash Composite

ČERNÝ, V. MELICHAR, J. FLEISCHHACKER, J. DROCHYTKA, R.

Original Title

The Influence of Sulfates on Tobermorite Formation in Lime-Ash Composite

Type

conference paper

Language

English

Original Abstract

Autoclaved aerated concrete is an ecological building material with suitable properties and long-time tradition. The research of secondary raw materials usage and technology optimization is needed in order to increase the efficiency and sustainability of its production. It is important to focus on development of mineralogical composition while studying the influence of input materials and the parameters of hydrothermal synthesis on the properties of final product. This is especially important in case of tobermorite formation as the bearer of strength in the structure. Main focus of this paper is applicability of fly ash (silica component) and admixture of energo-gypsum (sulfate component) in production of lime-ash composite in hydrothermal conditions. The research was focused on autoclaving of samples at temperature of 170°C in three various isothermal sustains. Final samples were analyzed by XRD and SEM in order to proof the influence of input materials. Results show that 5% admixture of energo-gypsum had positive influence on tobermorite formation.

Keywords

autoclaved aerated concrete, tobermorite, calcium sulfate, X-ray powder diffraction

Authors

ČERNÝ, V.; MELICHAR, J.; FLEISCHHACKER, J.; DROCHYTKA, R.

Released

15. 3. 2018

Publisher

Trans Tech Publications

Location

Switzerland

ISBN

0255-5476

Periodical

Materials Science Forum

Year of study

2018

Number

916

State

Swiss Confederation

Pages from

179

Pages to

183

Pages count

5

BibTex

@inproceedings{BUT143741,
  author="Vít {Černý} and Jindřich {Melichar} and Ján {Fleischhacker} and Rostislav {Drochytka}",
  title="The Influence of Sulfates on Tobermorite Formation in Lime-Ash Composite",
  booktitle="Materials Science Forum",
  year="2018",
  journal="Materials Science Forum",
  volume="2018",
  number="916",
  pages="179--183",
  publisher="Trans Tech Publications",
  address="Switzerland",
  doi="10.4028/www.scientific.net/MSF.916.179",
  issn="0255-5476"
}