Dispersions and the use thereof in concrete mixtures

Details Dispersions and the use thereof in concrete mixtures Dispersions and the use thereof in concrete mixtures

C - Chemistry, Metallurgy

04

B

C04B 24/26 (2006.01) C04B 28/02 (2006.01) C04B 40/00 (2006.01) C08K 5/098 (2006.01) C08K 5/42 (2006.01) C08K 5/48 (2006.01) C08L 9/08 (2006.01)

Patent

CA 2238991

An aqueous dispersion containing a latex, an alkaline earth metal formiate, cellulose ether and lauryl sulphonate can be added to a concrete mixture as an auxiliary agent to make the concrete more flexible and reduce shrinkage during setting. Adding the dispersion to concrete mixtures allows also addition of fillers hitherto regarded as toxic to cement.

Une dispersion aqueuse contenant un latex, un formiate de métaux alcalino-terreux, de l'éther cellulosique et du sulfonate de lauryle, peut être ajoutée à un mélange de béton sous forme d'auxiliaire pour rendre le béton plus souple et réduire le retrait pendant le durcissement. Cette adjonction permet également d'utiliser dans le mélange de béton des matières de charge qui jusqu'alors étaient considérés comme toxiques pour le ciment.

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