Detail publikace

Monitoring the effect of quartz-sand replacement by amorphous-silica raw material on the microstructure of calcium silicate composites

HÚŠŤAVOVÁ, J. ČERNÝ, V. DROCHYTKA, R.

Originální název

Monitoring the effect of quartz-sand replacement by amorphous-silica raw material on the microstructure of calcium silicate composites

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Quartz sand is the main raw material for the production, of autoclaved calcium silicate composites. However, its resources are rapidly dwindling, and alternative siliceous raw materials need to be sought and tested for replacement. Most often they are raw materials containing amorphous silica. Amorphous silica is more readily soluble than crystalline silica, and thus may contribute to the formation of a superior microstructure of the calcium silicate composite through calcium hydrate phases. This paper is focused on determining the optimal replacement rate of amorphous silica raw material for crystalline silica sand, while describing changes in microstructure of calcium silicate composites. The replacement rate was graded to 0%, 25%, 50%, 75% and 100%. Hydrothermal treatment conditions are based on the real production of autoclaved aerated concrete, so a temperature of 190°C and an isothermal holding time of 7 hours was chosen. To study the effect of the ratio of raw materials on microstructure, X-ray diffraction analysis supported by scanning electron microscopy images was used.

Klíčová slova

Calcium silicate compozite, glass, tobermorite

Autoři

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

Vydáno

17. 2. 2020

Nakladatel

Inštitut za kovinske materiale in technologije

Místo

Ljubljana

ISSN

1580-2949

Periodikum

Materiali in tehnologije

Ročník

54

Číslo

1

Stát

Slovinská republika

Strany od

129

Strany do

134

Strany počet

6

URL

http://mit.imt.si/izvodi/mit201/hustatova.pdf

BibTex

@article{BUT161654,
  author="Jana {Martanová} and Vít {Černý} and Rostislav {Drochytka}",
  title="Monitoring the effect of quartz-sand replacement by amorphous-silica raw material on the microstructure of calcium silicate composites",
  journal="Materiali in tehnologije",
  year="2020",
  volume="54",
  number="1",
  pages="129--134",
  doi="10.17222/mit.2019.191",
  issn="1580-2949",
  url="http://mit.imt.si/izvodi/mit201/hustatova.pdf"
}