Influence of polysaccharides on cement hydration

Arnaud Peschard (1, 2, 3, 4) , Alexandre Govin (1, 2, 3, 4) , Emmanuel Fredon (1, 2, 3, 4) , Philippe Grosseau (1, 2, 3, 4) , Gilles Fantozzi (5)

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 PC2M - Physico-Chimie des Matériaux Multicomposants
5 MATEIS - Matériaux, ingénierie et science [Villeurbanne]

This paper is about the influence of polysaccharides on cement hydration. Three polysaccharides were studied: a cellulose ether (CE), a starch ether (SE) and a dextrin (YD). In a concentrated media as well as in a dilute media, admixture CE only revealed a slight effect on cement hydration. Portlandite and ettringite formation and gypsum consumption were slowed down by SE adjunction. Admixture YD induced an acceleration of ettringite formation as well as gypsum consumption whereas portiandite formation was blocked by this compound.

Mots clés: polysaccharides; Cement hydration; organic admixtures; polysaccharides.

Domaines: Autre

Arnaud Peschard, Alexandre Govin, Emmanuel Fredon, Philippe Grosseau, Gilles Fantozzi. Influence of polysaccharides on cement hydration. Euroceramics VIII, 2004, France. pp.2141. ⟨hal-00125020⟩