Publication detail

Influence of Dehydrating Solution Types on Technological Properties of Alpha-Hemihydrate

FRIDRICHOVÁ, M. HÁJKOVÁ, I. DVOŘÁK, K.

Original Title

Influence of Dehydrating Solution Types on Technological Properties of Alpha-Hemihydrate

Type

conference paper

Language

English

Original Abstract

Sulphur binders originate by burnout of calcium sulphate dihydrate at different temperatures. All types are classified in air mortars therefore they can solidify, harden and remain stable only on air. Alpha hemihydrate is a material of very high quality and strengths, it is more compact with a coordinated mesh. Due to its properties it is applied as a binder for self levelling floor mixtures, but mainly for specific purposes in dental surgery. The gypsum dehydration with formation of apha - plaster can be carried out in two ways: - At temperature of 135 C under elevated pressure - At temperature of 105 C in salt solution In both of the mentioned cases the gypsum grain splits in the direction of Miller indexes (010) and (111) with final product automorphic grain alpha - hemihydrate of calcium sulphate characteristic with low consumption of mixture water and excellent strength characteristics. Alternative ways of the production, namely in salt solution are tested by Czech and foreign authors as well.

Keywords

Gypsum, alpha gypsum, sodium chloride, potassium chloride, calcium chloride

Authors

FRIDRICHOVÁ, M.; HÁJKOVÁ, I.; DVOŘÁK, K.

RIV year

2014

Released

11. 12. 2014

Publisher

Trans Tech Publication

Location

Švýcarsko

ISBN

978-3-03835-358-4

Book

Civil, Structural and Environmental Engineering III

ISBN

1022-6680

Periodical

Advanced Materials Research

Year of study

2015

Number

1065-69

State

Swiss Confederation

Pages from

1907

Pages to

1910

Pages count

4

BibTex

@inproceedings{BUT111348,
  author="Marcela {Fridrichová} and Iveta {Tuscher Hájková} and Karel {Dvořák}",
  title="Influence of Dehydrating Solution Types on Technological Properties of Alpha-Hemihydrate",
  booktitle="Civil, Structural and Environmental Engineering III",
  year="2014",
  journal="Advanced Materials Research",
  volume="2015",
  number="1065-69",
  pages="1907--1910",
  publisher="Trans Tech Publication",
  address="Švýcarsko",
  doi="10.4028/www.scientific.net/AMR.1065-1069.1907",
  isbn="978-3-03835-358-4",
  issn="1022-6680"
}