Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cellulose ethers and water retention
We first study in this paper the viscosity enhancing effect of cellulose ethers (CE) in aqueous solutions and its evolution around the so-called overlapping concentration. We show that, within the range of typical industrial dosages, the rheological behavior of CE solutions is only slightly affected by the pH and type of ions found in a typical cement paste. Moreover, our rheology, dynamic light scattering and water retention measurements suggest that, below the overlapping concentration, water retention can be seen as a purely biphasic filtration process, during which the rheological properties of the interstitial solution dictate the ability of water to resist migration under a pressure gradient. Above the overlapping concentration, water retention results from polymer coil associates, which can get jammed between cement grains.
Cellulose ethers and water retention
We first study in this paper the viscosity enhancing effect of cellulose ethers (CE) in aqueous solutions and its evolution around the so-called overlapping concentration. We show that, within the range of typical industrial dosages, the rheological behavior of CE solutions is only slightly affected by the pH and type of ions found in a typical cement paste. Moreover, our rheology, dynamic light scattering and water retention measurements suggest that, below the overlapping concentration, water retention can be seen as a purely biphasic filtration process, during which the rheological properties of the interstitial solution dictate the ability of water to resist migration under a pressure gradient. Above the overlapping concentration, water retention results from polymer coil associates, which can get jammed between cement grains.
Cellulose ethers and water retention
Brumaud, Coralie (Autor:in) / Bessaies-Bey, Hela (Autor:in) / Mohler, Carol (Autor:in) / Baumann, Robert (Autor:in) / Schmitz, Marc (Autor:in) / Radler, Michael (Autor:in) / Roussel, Nicolas (Autor:in)
Cement and Concrete Research ; 53 ; 176-184
2013
9 Seiten, 34 Quellen
Aufsatz (Zeitschrift)
Englisch
Cellulose ethers and water retention
| Online Contents | 2013
Cellulose ethers and water retention
| British Library Online Contents | 2013
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How water retention in porous media with cellulose ethers works
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Cellulose ethers influence on water retention and consistency in cement-based mortars
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