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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Influence of Cellulose Ether Particle Size on Water Retention of Freshly Mixed Mortars
Author(s): L. Patural, A. Govin, B. Ruot, O. Devès,
and P. Grosseau
Publication: Special Publication
Appears on pages(s): 261-271
Keywords: cellulose ethers; cement; mortar; particle size; water retention.
Abstract: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 particle size was studied. Two behaviors were highlighted regarding the particle size effect on mortar water retention. On the one hand, for cellulose ethers providing intermediate water retention, this parameter is fundamental: the thinner the particles, the better the water retention. The increase in water retention was explained by the rate of
dissolution of every fraction which was faster for the thinnest particles. On the other hand, for admixtures providing strong water retention, the effect of this parameter was weaker or not relevant. Indeed, a cellulose ether concentration threshold was noticed, justifying this behavior.
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