
Open access
Author
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Date
2016-05Type
- Journal Article
Citations
Cited 32 times in
Web of Science
Cited 34 times in
Scopus
ETH Bibliography
yes
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Abstract
This paper focuses on the modification of clay properties with inorganic additives to deflocculate and flocculate inorganic soil for the development of a material that would be as easy to use as the current concrete products, but with a much lower environmental impact. Considering that the rheological behaviour of clays is controlled by their surface charge, we first introduce potential determining ions to deflocculate the clay particles and to reduce the yield stress of the earth material. Their efficiency is characterized using zeta potential measurements and rheological tests. We then achieve the flocculation of clay particles by using natural minerals that slowly dissolve in the interstitial liquid and ultimately precipitate calcium silicate hydrate (C–S–H). The precipitation products are identified by X-ray diffraction and the consequences of this delayed precipitation are followed by oscillatory rheometric measurements. Finally, it is suggested that in this process, C–S–H precipitation is not used as a binding vector but as an anti-plasticizer that removes the inorganic dispersant additives. Show more
Permanent link
https://doi.org/10.3929/ethz-a-010680282Publication status
publishedExternal links
Journal / series
MaterialsVolume
Pages / Article No.
Publisher
MDPISubject
Clay; C–S–H; Rheology; Environmentally friendly materialsOrganisational unit
02604 - Inst. für Bau- & Infrastrukturmanagement / Inst. Construction&Infrastructure Manag.03891 - Flatt, Robert J. / Flatt, Robert J.
02606 - Institut für Baustoffe (IfB) / Institute for Building Materials
03972 - Habert, Guillaume / Habert, Guillaume
02655 - Netzwerk Stadt und Landschaft D-ARCH
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Show all metadata
Citations
Cited 32 times in
Web of Science
Cited 34 times in
Scopus
ETH Bibliography
yes
Altmetrics