C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 22/04 (2006.01) C04B 24/04 (2006.01) C04B 40/00 (2006.01)
Patent
CA 2466599
An alkali-free accelerator for sprayed cementitious composition, such as concrete, is prepared by dissolving aluminium sulphate in water and amorphous aluminium hydroxide in water optionally containing amine, and adding at least one stabiliser which is glycolic acid, and optionally at least one defoaming agent.
L'invention concerne un accélérateur de prise sans alcalins destiné à des compositions à base de ciment projeté, tel que le béton, préparé selon un procédé consistant à dissoudre du sulfate d'aluminium dans de l'eau et de l'hydroxyde d'aluminium amorphe dans de l'eau contenant éventuellement une amine, puis à ajouter au moins un agent stabilisant à base d'acide glycolique et éventuellement au moins un agent antimousse dans le mélange.
Construction Research & Technology Gmbh
Gowling Lafleur Henderson Llp
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