CHEMICAL-COMPOSITIONS OF THE CALCIUM MONOSULFATE HYDRATES FORMED BY THE HYDRATION OF ALUMINATE HAUYNE

Authors
IKEDA K NAKAMURA Y SHIMA H
Citation
K. Ikeda et al., CHEMICAL-COMPOSITIONS OF THE CALCIUM MONOSULFATE HYDRATES FORMED BY THE HYDRATION OF ALUMINATE HAUYNE, Nippon Seramikkusu Kyokai gakujutsu ronbunshi, 104(12), 1996, pp. 1156-1157
Citations number
9
Categorie Soggetti
Material Science, Ceramics
Journal title
Nippon Seramikkusu Kyokai gakujutsu ronbunshi → ACNP
ISSN journal
09145400
Volume
104
Issue
12
Year of publication
1996
Pages
1156 - 1157
Database
ISI
SICI code
0914-5400(1996)104:12<1156:COTCMH>2.0.ZU;2-O
Abstract
Calcium monosulfate hydrates, Ca-4[Al-2(OH)(12)][1-x)SO4 . x(OH)(2)]. 6H(2)O were synthesized at 20 degrees C from aluminate hauyne, Ca8Al12 O24(SO4)(2) by hydration under the presence of gypsum and portlandite. The experimental water/solid ratio was 0.80. Quantitative analysis by EPMA revealed that the x reaches up to 0.16 under the present synthet ic conditions where ettringites are considered to be stable at lower w ater/solid ratios. Stabilities of accompanied phases were discussed in terms of phase assemblage.