Construction method of cast-in-situ concrete structure external thermal insulation integrated non-removal formwork

Abstract

The invention discloses a construction method of a cast-in-situ concrete structure external thermal insulation integrated non-removal formwork. The construction method is characterized in that an external formwork in construction of an external wall of a cast-in-place reinforced concrete structure is arranged as the non-removal formwork with a thermal insulation function; a bottom plate of the non-removal formwork is attached to the concrete external wall and anchor fixing parts are used for being connected with inner rebars of the external wall, so that installation of the non-removal formwork is finished; after pouring and smashing of the cast-in-situ concrete are finished, the external formwork keeps connection with the concrete external wall and a remove process of the external formwork is omitted, so that the external formwork and the external wall of the structure are attached together, and the same life of thermal insulation and a building is achieved. According to the construction method of the cast-in-situ concrete structure external thermal insulation integrated non-removal formwork, after pouring of concrete components is finished and strength requirements are met, the formwork is closely combined with the structure as an external wall insulation system and has no need to be disassembled.

Description

technical field [0001] The invention relates to a construction method of a cast-in-place concrete structure external thermal insulation integration free formwork construction method, which is used for the construction of the cast-in-place reinforced concrete structure outer wall. Background technique [0002] In the prior art, the construction of cast-in-place concrete structures includes formwork engineering, reinforcement engineering and concrete engineering; among them, formwork engineering accounts for 40% to 50% of the labor of cast-in-place concrete engineering, and 30% to 35% of the project cost, so the formwork engineering It plays an important role in the construction process of cast-in-place concrete. Most of the traditional formwork projects belong to the supporting pouring structure. Every 1 cubic meter of concrete work needs to use 4 to 5 cubic meters of formwork. After the concrete is poured, the formwork needs to be removed. The process consumes a lot of formw...

AI Technical Summary

Problems solved by technology

Most of the traditional formwork projects belong to the supporting pouring structure. Every 1 cubic meter of concrete work needs to use 4 to 5 cubic meters of formwork. After the concrete is poured, the formwork needs to be removed. The process consumes a lot of formwork materials and manpower, and generates a lot of construction waste. It is far from the current concept of green construction and energy saving and environmental protection

After the cast-in-place structure is demolished, the concrete surface is exposed, and structural insulation construction is required. Commonly used organic insulation materials such as molded polystyrene foam (EPS), extruded polystyrene foam (XPS), Spraying or rigid polyurethane (polyurethane, PUR for short), etc., due to the fatal flaws in the durability and flame resistance of organic materials, the application range is greatly limited

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