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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
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" }