Cement-based systems using plastification/extrusion...

C - Chemistry – Metallurgy – 04 – B

Patent

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C04B 24/38 (2006.01) C04B 28/02 (2006.01)

Patent

CA 2563772

A mixture composition of a cellulose ether made from raw cotton linters and at least one additive is used in a cement extrusion mortar composition wherein the amount of the cellulose ether in the cement extrusion mortar composition is significantly reduced. When this cement extrusion mortar composition is mixed with a sufficient amount of water and extruded to form an object with comparable or lower crack formation, the plastification and/or extrusion properties of the resulting wet mortar are improved or comparable as compared to when using conventional similar cellulose ethers.

L'invention concerne une composition de mélange d'un éther de cellulose conçue à partir de linters de coton brut et d'au moins un additif et utilisée dans une composition de mortier d'extrusion de ciment, la quantité de l'éther de cellulose dans celle-ci étant nettement réduite. Quand cette composition de mortier d'extrusion de ciment est mélangée avec une quantité suffisante d'eau et extrudée de manière à former un objet présentant une formation de craquelure comparable ou inférieure à celle de l'art antérieur, les propriétés de plastification et/ou d'extrusion du mortier humide obtenu sont améliorées ou comparables à celles obtenues au moyen d'éthers de cellulose similaires classiques.

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