Cast-in-place concrete non-dismantling composite formwork heat insulation system and construction process thereof

Abstract

The invention discloses a cast-in-place concrete non-dismantling composite formwork heat insulation system and a construction process thereof, and relates to the technical field of heat insulation ofbuildings, aiming at solving the problem of water leakage hidden in the joint part of a traditional outer wall retaining body method of a steel structure building. According to the technical scheme, the system comprises double rows of light steel keels and two layers of heat insulation formworks, wherein connecting members are arranged on the heat insulation formworks, supporting blocks are arranged between the two light steel keels, two limiting slots matching the corresponding light steel keels in a clamping manner are arranged at two ends of the bottom walls of the supporting blocks close to the corresponding light steel keels, and a filling material is poured between the two heat insulation formworks; and each heat insulation formwork comprises an inner bonding reinforcing layer, a graphite extruded plate, a mortar interface layer, a heat insulation transition layer and an outer bonding reinforcement layer which are sequentially arranged along the thickness direction, and a polyurethane foam for sealing gaps is arranged between the heat insulation formworks. The cast-in-place concrete non-dismantling composite formwork heat insulation system and the construction process thereofachieve the effect of solving the problem of water leakage hidden in the joint part of the traditional outer wall retaining body method of the steel structure building.

Description

technical field [0001] The invention relates to the technical field of building heat preservation, in particular to a heat preservation system of cast-in-place concrete without dismantling composite formwork and a construction process thereof. Background technique [0002] PC components (concrete sandwich wall panels) are prefabricated in the factory and hoisted on site. The concrete wall panels are fixed with steel beams using steel corner brackets. After the components are hoisted, the interior and exterior finishes will be constructed. [0003] The above method has the following problems: the wall panel is fixed by using steel corner brackets to suspend and fix the PC components. In order to avoid excessive manufacturing deviation of the PC components produced by the factory, a width of 20 mm is deliberately reserved between components and beams and columns, and between components. The seam is used as a component deviation adjustment space, and the cement mortar material ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a cast-in-place concrete non-demolition compound formwork insulation system and its construction technology, which has the effect of solving the problems of water leakage and cold bridge hidden dangers in the joints in the traditional external wall protection method

Images