Method for making building elements

Details Method for making building elements Method for making building elements

C - Chemistry, Metallurgy

04

B

C04B 40/02 (2006.01) B28B 1/44 (2006.01) B28B 3/00 (2006.01) B28B 7/46 (2006.01) C04B 28/14 (2006.01)

Patent

CA 2441825

The invention concerns a method for making a building element based on gypsum plaster, which consists in introducing a mixture of gypsum plaster, granular filler and water in a mould (10) with rigid and shape-retaining walls (12, 14, 16), compressing said mixture in the mould at a pressure not less than a threshold value as from which the gypsum plaster is prevented from being crystallised by increasing its water-solubility, then in causing it to be rapidly crystallised by decreasing or stopping the compression of the mixture.

Procédé de fabrication d'un élément de construction à base de plâtre, consistant à introduire un mélange de plâtre, de charge granulaire et d'eau dans un moule (10) à parois (12, 14, 16) rigides et indéformables, à comprimer ce mélange dans le moule à une pression supérieure ou égale à une valeur seuil à partir de laquelle on empêche la cristallisation du plâtre en augmentant sa solubilité dans l'eau, puis à provoquer sa cristallisation rapide par diminution ou annulation de la compression du mélange.

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