Process for manufacturing sound absorbing cement tile

Details Process for manufacturing sound absorbing cement tile Process for manufacturing sound absorbing cement tile

C - Chemistry, Metallurgy

04

B

C04B 28/02 (2006.01) C04B 28/14 (2006.01) C04B 38/10 (2006.01)

Patent

CA 2596657

A continuous process for manufacturing a sound absorbing tile made from a slurry including, quick setting cement, water, fibers and foaming agent, the process including the steps of (I) mixing cementitious material, water, foaming agent but without incorporation of prefabricated foam with fibers into a slurry; subsequently; (II) injecting and distributing air into the slurry of step (I) to form a cellular slurry; subsequently; (III) forming tiles or precursor products of tiles from the cellular slurry; and finally; (IV) allowing the cellular slurry to set into the desired tile or a precursor thereof. The preparation of the aerated slurry is carried out in two separate chambers, whereas chamber 1 is a mixer operated at high shear rate for homogenization and chamber 2 is a blender operated at low shear rate forstabilization and distribution of porosity. Inbetween the two devices, air is inyected to the slurry.

Procédé en continu de fabrication d'une tuile absorbant les sons composée d'un coulis contenant du ciment à prise rapide, de l'eau, des fibres et un agent moussant. Ledit procédé consiste (I) à mélanger la matière de ciment, l'eau et l'agent moussant, mais sans ajout de mousse préfabriquée, avec les fibres pour former un coulis, (II) à injecter et répartir de l'air dans le coulis obtenu à l'étape (I) pour former un coulis cellulaire, (III) à former des tuiles ou des ébauches de tuiles à partir du coulis cellulaire et finalement (IV) à permettre au coulis cellulaire de prendre pour obtenir la tuile désirée ou une ébauche de tuile.

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