A pouring type fireproof external wall insulation system and construction method

Abstract

The invention discloses a casting type fireproof external wall insulation system and a construction method thereof. The casting type fireproof external wall insulation system comprises a wall base layer, a thermal insulation layer, a metal anchoring connecting piece, a fiber cement board, a flexible anti-crack layer and a finishing layer, wherein the thermal insulation layer is positioned between the wall base layer and the fiber cement board and is cast by an inorganic thermal insulation material in times; the wall base layer, the thermal insulation layer and the fiber cement board are connected into a whole through the metal anchoring connecting piece; the flexible anti-crack layer is compounded on the outer side of the fiber cement board; and the finishing layer is positioned on the outer side of the flexible anti-crack layer. The casting type fireproof external wall insulation system has the characteristics of firm and reliable structure, high fireproof performance, high wall decoration property, crack difficulty, environment friendliness, economical construction cost, convenient installation, rapid construction and the like.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a pouring type fireproof external wall heat preservation system and a construction method. Background technique [0002] At present, my country is vigorously promoting building energy conservation, and promoting the development of low energy consumption, ultra-low energy consumption and green buildings is an important task at present. The current building exterior wall insulation materials are mainly divided into two categories: (1) Organic material insulation systems, such as EPS insulation boards, XPS insulation boards, phenolic resin insulation boards, polyurethane insulation materials, etc., this type of insulation system has good insulation effect , low construction thickness, relatively good volume stability, etc., but its own organic materials are not fire-resistant, and the durability is short, which basically cannot meet the existing construction requirements, and is cu...

AI Technical Summary

Problems solved by technology

The current building exterior wall insulation materials are mainly divided into two categories: (1) Organic material insulation systems, such as EPS insulation boards, XPS insulation boards, phenolic resin insulation boards, polyurethane insulation materials, etc., this type of insulation system has good insulation effect , low construction thickness, relatively good volume stability, etc., but its own organic materials are not fire-resistant, and the durability is short, which basically cannot meet the existing construction requirements, and is currently on the verge of being phased out

(2) Inorganic material insulation systems mainly include inorganic insulation mortar, rock wool board, foamed cement board, ceramic insulation board, etc. Inorganic mortar is currently less used due to poor insulation effect, easy cracking, water seepage and other problems, and its use is prohibited in some areas ;Rock wool boards are rarely used in external insulation projects due to problems such as few resources, high cost, and low self-strength; ceramic insulation boards have good volume stability and strength, but are currently difficult to promote due to high cost and complicated construction.

Therefore, at present, it can meet the fire resistance requirements. The most commonly used is foamed cement board. The construction process is: the cement board with a side length of about 30cm and a thickness of 3-5cm is fixed on the wall with adhesive mortar, and then the surface of the cement board is coated with anti-cracking. Mortar is the final decorative layer. What cannot be ignored is that the size of the foamed cement board is too small, which is not only difficult to construct, but also has too many joints between the boards, and there are cold and hot bridges, which affect the thermal insulation effect, and the shrinkage of the cement material itself and the external environment The resulting thermal expansion and contraction will inevitably lead to cracking and water seepage of the external wall. At the same time, the force formed by the anti-crack layer and the decorative layer of the external wall and the force generated by the natural environment directly act on the foamed cement board. Due to its low strength, it is very difficult to It is easy to cause problems such as falling off, which is dangerous

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