Publication detail

Electrokinetic Potential Measurements in SiO2- H2 O System in the Presence of Calcium Sulphate Dihydrate.

FASUROVÁ, N. HAVLICA, J.

Original Title

Electrokinetic Potential Measurements in SiO2- H2 O System in the Presence of Calcium Sulphate Dihydrate.

Type

journal article - other

Language

English

Original Abstract

The aim of the presented work was to study the dependence of the SiO2 sol zeta potential on the contents of calcium chloride. The sol contained 2.27 wt. % of SiO2 and the content of anhydrous CaCl2 varied between 0.126 and 13.0 wt. %. The experiments demonstrated an influence of calcium and chloride ions on the electrokinetic potential. Formation of gels based on calcium-silicate hydrates can be expected with an increasing content of calcium ions in the solution. On the other hand, increasing content of chloride ions brings about a lowering of the pH of the solution, thus slowing down the transport of the silicate components into the solution. These chloride effects are more apparent at higher CaCl2 concentrations. The described phenomenon explains the behaviour of calcium chloride as an additive accelerating the hydration of the silicate components of clinker minerals.

Keywords

sol of silicon dioxide, gelation process, zeta potential, isoelectric point.

Key words in English

sol of silicon dioxide, gelation proces, zeta potential, isoelectric point

Authors

FASUROVÁ, N.; HAVLICA, J.

RIV year

1998

Released

9. 6. 1999

Publisher

Ceramics-Silikáty

Location

Prague

ISBN

0862-5468

Periodical

Ceramics-Silikáty

Year of study

43

Number

2

State

Czech Republic

Pages from

52

Pages to

55

Pages count

4

BibTex

@article{BUT38900,
  author="Naděžda {Fasurová} and Jaromír {Havlica}",
  title="Electrokinetic Potential Measurements in SiO2- H2 O System in the Presence of Calcium Sulphate Dihydrate.",
  journal="Ceramics-Silikáty",
  year="1999",
  volume="43",
  number="2",
  pages="4",
  issn="0862-5468"
}