Preparation of concrete accelerator

Details Preparation of concrete accelerator Preparation of concrete accelerator

Category

C - Chemistry, Metallurgy

Subcategory

04

Subsubcategory

B

IPC codes

C04B 22/14 (2006.01) C04B 28/02 (2006.01) C04B 40/00 (2006.01)

Type

Patent

Patent number

CA 2393458

Description

An alkali-free accelerator for sprayed concrete is prepared by dissolving aluminium sulphate and amorphous alu-minium hydroxide in water which optionally contains one amine, and optionally adding at least one stabiliser, selected from hydrox-ycarboxylic acids and phosphoric acids and non-alkaline salts thereof, and at least one defoaming agent.

L'invention concerne un accélérateur sans alcali pour béton pulvérisé, préparé en dissolvant du sulphate d'aluminium dans de l'eau et de l'aluminium amorphe dans de l'eau contenant éventuellement une amine, et en ajoutant éventuellement au moins un stabilisant, sélectionné parmi les acides hydroxycarboxyliques et les acides phosphoriques et leurs sels non alcalins, et au moins un agent antimousse.

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