The silica fume and temperature influence on the hydration and hardening processes of 12CaO center dot 7Al(2)O(3)

Authors
Georgescu, M Badanoiu, A
Citation
M. Georgescu et A. Badanoiu, The silica fume and temperature influence on the hydration and hardening processes of 12CaO center dot 7Al(2)O(3), REV RO CHIM, 44(1), 1999, pp. 25-30
Citations number
11
Categorie Soggetti
Chemistry
Journal title
REVUE ROUMAINE DE CHIMIE
ISSN journal
00353930 → ACNP
Volume
44
Issue
1
Year of publication
1999
Pages
25 - 30
Database
ISI
SICI code
0035-3930(199901)44:1<25:TSFATI>2.0.ZU;2-T
Abstract
The hydration behaviour of C(12)A(7)*)-silica fume mixtures for two differe nt temperatures -23 degrees C and 45 degrees C has been studied, using X-ra y diffraction, thermal analysis and IR spectroscopy. The hexagonal aluminat e hydrates initially formed (C(2)AH(8) and C(4)AH(13)) are converted in C(3 )AH(6) - for reference sample acid cubic phases with silica content - in si lica fume blended samples. The mechanical strengths of C(12)A(7)-silica fum e composites are superior as compared with reference (C(12)A(7)) and show a n increasing trend up to 60 days when kept in a moisture at 45 degrees C.