Effect of cellulose ethers on water retention in freshly-mixed mortars

Laetitia Patural (1, 2, 3) , Alexandre Govin (1, 2, 3) , Philippe Grosseau (1, 2, 3) , Bertrand Ruot (4) , Olivier Deves (4)

1 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels
2 P2MC-ENSMSE - Département Poudres et Matériaux Multi-Composants
3 LPMG-EMSE - Laboratoire des Procédés en Milieux Granulaires
4 CSTB - Centre Scientifique et Technique du Bâtiment

Cellulose ethers are polymers frequently introduced into mortar formulations in order to improve water retention capacity and workability of the freshly-mixed materials. Physico-chemical parameters of these admixtures (molecular weight, granulometry, substitution degrees, etc) seem to have a strong influence on mortar water retention capacity. In this paper, the influence of cellulose ether molecular weight on mortar water retention and its consistency was studied. Moreover, a new method was used to evaluate mortar consistency, named Consistor Baronnie method. This method was confirmed with rheological measurements.

Mots clés: cellulose ethers; consistency; mortar; water retention

Domaines: Génie des procédés

Laetitia Patural, Alexandre Govin, Philippe Grosseau, Bertrand Ruot, Olivier Deves. Effect of cellulose ethers on water retention in freshly-mixed mortars. 11th International Conference of the European Ceramic Society, Jun 2009, Cracovie, Poland. pp.959-961. ⟨hal-00519140⟩