Lignin-based concrete admixtures

C - Chemistry – Metallurgy – 04 – B

Patent

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Details

C04B 24/18 (2006.01) C04B 28/02 (2006.01)

Patent

CA 2231641

The invention provides for an admixture for reducing the water content of a concrete mix. The admixture comprises an alkaline solution of a lignin in a sulfomethylolated form. The admixture further comprises an air detrainer. Also provided are novel cement compositions comprising the admixture of the invention.

Ce type de mélange permet de réduire la teneur en eau d'un mélange pour béton et comprend une solution alcaline d'une lignine sous forme sulfométhylolatée, ainsi qu'un agent d'élimination de l'air. On décrit aussi de nouvelles compositions de ciments contenant un tel mélange.

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