Effect of polysaccharides on the hydration of cement paste at early ages

Arnaud Peschard (1, 2, 3, 4) , Alexandre Govin (1, 2, 3, 4) , Philippe Grosseau (1, 2, 3, 4) , Bernard Guilhot (1, 2, 3, 4) , René Guyonnet (1, 2, 3, 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 PC2M - Physico-Chimie des Matériaux Multicomposants

This work deals with the relative efficiency of polysaccharides and their influence on cement hydration. Several parameters such as the structure, concentration, average molecular weight, and soluble fraction value of polysaccharides were examined. Cement hydration was monitored by isothermal calorimetry, thermogravimetry (TGA), and infra-red spectroscopy (FTIR). Results clearly show that retardation increases with higher polysaccharide-to-cement weight ratio (P/C). Low molecular weight starch showed enhanced retarding effect on the hydration of cement. The retardation effect of polysaccharides is also dependant on the composition of cement.

Mots clés: Hydration; Polymers; Polysaccharides; Retardation; Cement Paste

Domaines: Autre

Arnaud Peschard, Alexandre Govin, Philippe Grosseau, Bernard Guilhot, René Guyonnet. Effect of polysaccharides on the hydration of cement paste at early ages. Cement and Concrete Research, 2004, 34(11), pp.2153. ⟨hal-00124310⟩