Detail publikačního výsledku

Effect of calcite on the Brick Body Closing

SOKOLÁŘ, R.

Originální název

Effect of calcite on the Brick Body Closing

Anglický název

Effect of calcite on the Brick Body Closing

Druh

Článek recenzovaný mimo WoS a Scopus

Originální abstrakt

The impermeability to water is an important property of clay roof tiles. The decrease of the permeability of the brick body to water with the time is a typical feature of the brick body closing process. Thus, test samples from two different types of mixtures of raw materials for the production of clay roof tiles in the Czech Republic fired in a laboratory kiln at temperatures of 800, 900 and 1,000 C were tested with respect to their permeability to water and porosity. The brick body closing process especially is influenced by the content of free CaO. After firing at lower temperatures, the body based on brick clay with a high content of calcite shows a considerable closing. The body closing is caused by the hydration of free calcium oxide CaO originating from the calcite decomposition and from the formation of calcium hydrate Ca(OH)2 that closes the capillary pores in the body after increasing its volume compared to CaO.

Anglický abstrakt

The impermeability to water is an important property of clay roof tiles. The decrease of the permeability of the brick body to water with the time is a typical feature of the brick body closing process. Thus, test samples from two different types of mixtures of raw materials for the production of clay roof tiles in the Czech Republic fired in a laboratory kiln at temperatures of 800, 900 and 1,000 C were tested with respect to their permeability to water and porosity. The brick body closing process especially is influenced by the content of free CaO. After firing at lower temperatures, the body based on brick clay with a high content of calcite shows a considerable closing. The body closing is caused by the hydration of free calcium oxide CaO originating from the calcite decomposition and from the formation of calcium hydrate Ca(OH)2 that closes the capillary pores in the body after increasing its volume compared to CaO.

Klíčová slova

calcite, brick body closing, water permeability, porosity

Klíčová slova v angličtině

calcite, brick body closing, water permeability, porosity

Autoři

SOKOLÁŘ, R.

Rok RIV

2011

Vydáno

17.03.2010

Nakladatel

Vereinegte verlagsanstalten GmbH

Místo

Dusseldorf

ISSN

0020-5214

Periodikum

INTERCERAM

Svazek

59

Číslo

2

Stát

Spolková republika Německo

Strany od

123

Strany do

127

Strany počet

5

BibTex

@article{BUT50314,
  author="Radomír {Sokolář}",
  title="Effect of calcite on the Brick Body Closing",
  journal="INTERCERAM",
  year="2010",
  volume="59",
  number="2",
  pages="123--127",
  issn="0020-5214"
}