Prefabricated composite building panel

Details Prefabricated composite building panel Prefabricated composite building panel

E - Fixed Constructions

04

C

E04C 2/26 (2006.01) B28B 19/00 (2006.01) E04B 1/94 (2006.01) E04C 2/04 (2006.01) E04C 2/296 (2006.01) E04F 13/08 (2006.01)

Patent

CA 2206671

A prefabricated composite panel of the type comprising a rigid sheet of cellularpolymeric material having an outer face for facing outwardly of the wall and an inner face for facing inwardly of the wall, a covering layer on the outer face of the foam sheet made of a cementitious material, a plurality of rigid facing elements embedded in and to the outer face of the cementitious layer so as to define an outermost surface of the panel, the facing elements being attached to the outer face in a pattern defining spaces between at least some of the facing elements and adjacent ones of the facing elements with the cementitious layer showing in and extending partially into the spaces between the facing elements, and mechanical supports engaging the foam sheet, the cementitious layer and a plurality of the facing elements and formed from a rigid material different from the cellular polymeric material to provide mechanical support of the facing elements to resist downward sagging of the facing elements on the foam sheet, such sagging induced by heat, combustion or other environmental factors. The fire retardancy is further improved by the addition of gypsum to the cementitious layer which reduces the temperature by converting water molecules into vapour. The strength of the cementitious layer is further improved by the addition of fibrous strengthening elements, such as fibreglass. A method of manufacturing such building panel is also disclosed.

Panneau de matériau composite préfabriqué constitué d'une feuille rigide de matériau en polymère cellulaire dont la face extérieure recouvre l'extérieur du mur, et la face intérieure l'intérieur du mur, d'une couche recouvrant la face extérieure de la feuille de mousse en matériau cimentaire, de plusieurs éléments de surface rigides intégrés à la face extérieure de la couche cimentaire et constituant la surface extérieure du panneau. Les éléments de protection sont fixés à la face extérieure de manière à créer un espace entre des éléments de surface et les espaces des éléments de surface adjacents. La couche cimentaire apparaît et s'étend en partie dans les espaces qui séparent les éléments de protection, tandis que des supports mécaniques s'engagent dans la feuille de mousse, la couche cimentaire et les éléments de protection, formés d'un matériau rigide différent du matériau en polymère cellulaire afin d'assurer aux éléments de protection un support empêchant l'affaissement des éléments de protection de la feuille de mousse à cause, par exemple, de la chaleur, de la combustion ou de facteurs environnementaux. Le retardement de la combustion est accru par l'ajout de gypse à la couche cimentaire, afin d'abaisser la température par la vaporisation des molécules d'eau. La résistance de la couche cimentaire est accrue par l'ajout d'éléments de renforcement fibreux comme la fibre de verre. On expose également une méthode de fabrication de ce genre de panneau de construction.

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