Detail publikačního výsledku
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.
English Title
Electrokinetic Potential Measurements in SiO2- H2 O System in the Presence of Calcium Sulphate Dihydrate.
Type
Peer-reviewed article not indexed in WoS or Scopus
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.
English 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 process, zeta potential, isoelectric point.
Authors
FASUROVÁ, N.; HAVLICA, J.
Released
09.06.1999
Publisher
Ceramics-Silikáty
Location
Prague
Edition
1
ISBN
0862-5468
Periodical
CERAMICS-SILIKATY
Volume
43
Number
2
State
Czech Republic
Pages from
52
Pages count
4
Full text in the Digital Library
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-SILIKATY",
year="1999",
volume="43",
number="2",
pages="4",
issn="0862-5468"
}