| Numéro |
J. Phys. IV France
Volume 123, March 2005
|
|
|---|---|---|
| Page(s) | 189 - 192 | |
| DOI | https://doi.org/10.1051/jp4:2005123032 | |
J. Phys. IV France 123 (2005) 189-192
DOI: 10.1051/jp4:2005123032
Effect of an organic additive on the rheology of an aluminous cement paste and consequences on the densification of the hardened material
Y. El Hafiane1, A. Smith1, J.P. Bonnet1 and B. Tanouti21 GEMH (EA 3178), École Nationale Supérieure de Céramique Industrielle, 47 à 73 avenue Albert Thomas, 87065 Limoges Cedex, France
2 LCSM, Faculté des Sciences Semlalia, avenue Moulay Abdellah, 40000 Marrakech, Maroc
Abstract
The material used in the present work is Secar 71
(Lafarge) mixed with water containing an organic additive (acetic acid noted
HOAc). The rheological behavior of these pastes is studied. The best
dispersion is obtained when the mass content of the additive with respect to
the cement is equal to 0.5%. The microstructural characterizations of
samples aged 4 days at 20
C and 95 % relative humidity reveal a
significant increase in the density and a reduction in porosity for very
small percentages of additive. The remarkable effect of the acetic acid on
the microstructure of hardened material is correlated with its good
dispersing action.
Key words: Aluminous cement, Rheological behavior, Dispersion, Organic additive, Microstructural properties.
© EDP Sciences 2005