Controlled reactivity quicklime and method for producing...

Details Controlled reactivity quicklime and method for producing... Controlled reactivity quicklime and method for producing...

C - Chemistry, Metallurgy

04

B

C04B 38/00 (2006.01) C04B 2/02 (2006.01) C04B 28/18 (2006.01) C04B 40/00 (2006.01)

Patent

CA 2261115

A method is shown for manufacturing an aerated autoclaved concrete material. A quick-stiffening mixture is prepared by combining a silica containing material, quicklime, a rising agent, gypsum, cement and water. The mixture is deposited into a mold and is allowed to form a stiffened body. The stiffened body is removed from the mold and placed in an autoclave station in which it is steam cured at elevated temperature and pressure. The quicklime which is used to form the quick-stiffening mixture is modified with a chemical modifier to provide a desired degree of chemical reactivity in the quick-stiffening mixture.

L'invention concerne un procédé pour fabriquer un béton cellulaire passé à l'autoclave. Un mélange à durcissement rapide est préparé par combinaison d'un matériau contenant de la silice, de chaux vive, d'un agent de rinçage, de gypse, de ciment et d'eau. Ce mélange est déposé dans un moule et y forme un corps durci. Ce corps durci est ôté du moule et placé dans un poste autoclave dans lequel il est étuvé à température et pression élevées. La chaux vive utilisée pour former le mélange à durcissement rapide est modifiée avec un modificateur chimique pour assurer le degré souhaité de réactivité chimique dans le mélange à durcissement rapide.

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