Process for the production of foam concrete blanks

Details Process for the production of foam concrete blanks Process for the production of foam concrete blanks

B - Operations, Transporting

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B28B 5/00 (2006.01) B28B 1/50 (2006.01) B28B 7/42 (2006.01) C04B 38/10 (2006.01) C04B 40/02 (2006.01)

Patent

CA 1182622

A B S T R A C T This invention relates to a process for the production of foam concrete blanks, in which a pourable base mixture consisting in the main of granular material, particularly material which contains silicate; water; cement; and foam is produced and placed in a mold, after which the blank, when it displays adequate hardness, is removed from the mold and hardened. In order to be able to produce bricks of a regular density simply and rapidly, a temperature dependent accelerating additive for hardening the base mixture is added to the base mixture before it is placed in the mold, the base mixture that is in the mold being heated by means of an electrical high frequency field homogeneously to a temperature of approximately 40 - 80°C, and the heating of the base mixture in the mold being carried out so quickly that the expansion caused by the heating of the base mixture is terminated before the cement begins to harden. The blank is removed from the mold after a heating period of 20 - 120 seconds.

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