Silica and aluminium sulfate or alum aqueous suspension;...

B - Operations – Transporting – 01 – J

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B01J 13/00 (2006.01) C01B 33/141 (2006.01) C02F 1/52 (2006.01) C04B 22/00 (2006.01) C04B 28/02 (2006.01) D21H 17/66 (2006.01) E21B 33/13 (2006.01)

Patent

CA 2173384

L'invention est relative à des suspensions aqueuses de silice précipitée et de sulfate d'aluminium, possédant un pH inférieur à 4 et une teneur en matière sèche comprise entre 10 et 50% en poids et se présentant, après une période de repos de 48 heures, sous la forme d'un gel, ledit gel étant réversible sous faible cisaillement. Elle concerne également des procédés de préparation de ces suspensions et leurs utilisations, notamment dans le domaine des pâtes cimentaires, des mortiers et des bétons.

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