HYDRATION AND MICROSTRUCTURE OF BINDER COMPOUNDS CONTAINING C2AS AND C2S SYNTHESISED BY SOL-GEL METHOD C2AS AND C2S SYNTHESISED BY SOL-GEL METHOD

The sol-gel method was used to synthesise nanoparticles of C2AS and C2S. These cement phases prepared by solid-state reaction at high temperatures are hydraulically latent or less active. After heating at 600 C, they were calcined at 900 C and 1100 C to obtain crystals of C2S and C2AS respectively....

Full description

Saved in:
Bibliographic Details
Published in:Ceramics (Praha) 2006-01, Vol.50 (2), p.106-114
Main Authors: Doval, M, Palou, M, Kovar, V
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The sol-gel method was used to synthesise nanoparticles of C2AS and C2S. These cement phases prepared by solid-state reaction at high temperatures are hydraulically latent or less active. After heating at 600 C, they were calcined at 900 C and 1100 C to obtain crystals of C2S and C2AS respectively. Binder compounds in the framework of C2AS-C2S-C4A3barS-CbarS-C system were prepared using C2AS and C2S synthesised via the sol-gel process. Samples showed better hydraulic activity when comparing it with the system where pure minerals were used. The hydration of this system leads to coexistence of two crystallohydrates of gehlenite hydrate and ettringite, which originated by primary and secondary reactions. Gehlenite hydrate and ettringite were stable. 23 refs.
ISSN:0862-5468