Waterproof lightweight concrete prefabricated slab

Abstract

The invention discloses a waterproof lightweight concrete prefabricated slab. The waterproof lightweight concrete prefabricated slab comprises a concrete layer, fireproof packing layers, heat insulation layers, a keel frame and surface layers, wherein the surface layers are arranged on the upper and lower surfaces of the prefabricated slab; the fireproof packing layer, the heat insulation layer, the concrete layer, the heat insulation layer and the fireproof packing layer are arranged between the upper and lower surface layers respectively; a strengthened layer of the keel frame comprises a grid framework made of a carbon fiber guide rod and a metal screen mesh which covers the grid framework; the keel frame covers the concrete layer; and each heat insulation layer is formed by covering a polyurethane foam layer with a mortar layer. According to the waterproof lightweight concrete prefabricated slab disclosed by the invention, the fireproof packing layers and a fireproof keel layer in the concrete prefabricated slab are added into the concrete prefabricated slab, the fireproof performance of the prefabricated slab can be effectively improved, and a panel is provided with a non-combustible inorganic heat insulation material, so that flame and high-temperature gas can be prevented from entering the prefabricated slab from the surfaces when fire disasters occur, and the possibility that the prefabricated slab is expanded and deformed when being heated is reduced; and by arranging the plurality of layers of composite materials, the heat insulation performance, the fireproof performance and the weight of the prefabricated slab are combined, so that the foundation construction cost of buildings is reduced.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a prefabricated board, in particular to a refractory lightweight concrete prefabricated board. Background technique [0002] The design service life of general concrete structures is 50 years. When the building structure has reached the design service life, the structural performance has not been greatly reduced, and it can still be used normally after reinforcement. Considering that the cost of demolition and reconstruction is relatively high, the method of structural reinforcement can be used to repair and reinforce the structure to ensure that its bearing capacity meets requirements. [0003] At present, the fire protection requirements of buildings are getting higher and higher, and the fire resistance level of building materials is also increased. It is required that buildings are not easy to deform or collapse in case of fire. However, the technical level of tra...

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Problems solved by technology

[0003] At present, the fire protection requirements of buildings are getting higher and higher, and the fire resistance level of building materials is also increased. It is required that buildings are not easy to deform or collapse in case of fire. However, the technical level of traditional building materials in this respect is often not enough. Therefore, it is necessary to develop a method that can be combined with concrete refractory prefabricated panels to reduce material costs, shorten the construction period, reduce the risk of deformation of buildings under high-temperature burning, and improve the fire resistance of building structures. Effect

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