Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10629809 | Journal of the European Ceramic Society | 2005 | 5 Pages |
Abstract
Aluminous cement pastes (Secar 71 from Lafarge) containing increasing quantities of acetic acid, HOAc, are prepared ((wHOAc/wcement) à 100 ranges from 0 to 10%). Pastes containing HOAc present a Newtonian behavior. The best dispersion is obtained when the mass content of acid with respect to the cement is equal to 0.5%. Microstructural characterizations of samples aged for 4 days at 20 °C and 95% relative humidity reveal a significant increase in density, a reduction in porosity as well as a displacement of pore diameter towards low sizes. The open porous volume decreases with time from 25 to 9 vol.% when samples are 4 days and 6 months old, respectively. The addition of HOAc also has a beneficial effect on the flexural strength of set samples.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Y. El Hafiane, A. Smith, J.P. Bonnet, B. Tanouti,