Use of ultrasonic degradation to study the molecular weight influence of polymeric admixtures for mortars - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Construction and Building Materials Année : 2013

Use of ultrasonic degradation to study the molecular weight influence of polymeric admixtures for mortars

Résumé

The aim of this paper is to provide a methodology to study the influence of the molecular weight of polysaccharidic admixtures on mortar properties. A wide range of admixtures with different molecular weight and constant structure was prepared. This has been made possible by the use of ultrasonic treatment, a simple, effective, and without additive method. It appears that cellulose and guar gum derivatives, used as water retention agents, exhibit a significant molecular weight reduction according to the ultrasonic treatment duration. The water retention capacity of the mortars mixed with ultrasonically degraded admixture solutions increases with molecular weight for a same admixture. However, comparing water retention values obtained with similar molecular weight of a same family shows that effectiveness of polysaccharides as water retention agent is not linearly linked to their molecular weight.
Fichier principal
Vignette du fichier
TP-CBM-47-Orig.pdf (231.84 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00839928 , version 1 (01-07-2013)

Identifiants

Citer

Thomas Poinot, Kawtar Benyahia, Alexandre Govin, Thomas Jeanmaire, Philippe Grosseau. Use of ultrasonic degradation to study the molecular weight influence of polymeric admixtures for mortars. Construction and Building Materials, 2013, 47, pp.1046-1052. ⟨10.1016/j.conbuildmat.2013.06.007⟩. ⟨hal-00839928⟩
166 Consultations
856 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More