Detail publikace

The influence of different types of siliceous raw materials on Tobermorite formation in lime-silica composite

ČERNÝ, V. DROCHYTKA, R.

Originální název

The influence of different types of siliceous raw materials on Tobermorite formation in lime-silica composite

Typ

článek v časopise ve Scopus, Jsc

Jazyk

angličtina

Originální abstrakt

Autoclaved aerated concrete (AAC) is ecological building material with useful properties. The main mineral compound of AAC is tobermorite, it increases its mechanical properties. There is examined the usage of nature and artificial siliceous materials in this study. Main aim of the study is to demonstrate the influence of individual types of materials on the tobermorite creation and to determine optimal lime/silica ratio. First step of the research focuses on analysis of the used materials. In the second step on the creation of calcium hydrosilicate phases under ideal conditions (temperature of 190 °C, pressure of 1.3 MPa) of autoclave reactors (volume of 250 ml). The autoclaved samples are next analyzed by X-ray diffraction and scanning electron microscopy for qualitative evaluation of created mineral phases. The results show that the most suitable non-traditional silica component is coal fly ash. Fly ash has the optimal combination of amorphous and crystalline SiO 2 in combination with Al 2 O 3 . These properties provided the highest proportion of created tobermorite even in more energy-saving autoclaving mode.

Klíčová slova

Autoclaved aerated concrete, Calcium hydrosilicates, Fly ash, Hydrothermal conditions

Autoři

ČERNÝ, V.; DROCHYTKA, R.

Vydáno

1. 3. 2019

Nakladatel

World Scientific and Engineering Academy and Society

ISSN

1790-5079

Periodikum

WSEAS Journal Transactions on Environment and Development

Ročník

15

Číslo

1

Stát

Italská republika

Strany od

57

Strany do

64

Strany počet

8

URL

http://wseas.org/wseas/cms.action?id=19909

BibTex

@article{BUT163731,
  author="Vít {Černý} and Rostislav {Drochytka}",
  title="The influence of different types of siliceous raw materials on Tobermorite formation in lime-silica composite",
  journal="WSEAS Journal Transactions on Environment and Development",
  year="2019",
  volume="15",
  number="1",
  pages="57--64",
  issn="1790-5079",
  url="http://wseas.org/wseas/cms.action?id=19909"
}