External wall thermal insulation slab and external wall heat insulation construction method

Abstract

The present invention relates to an exterior wall heat-insulating plate and exterior wall heat-insulating construction method. Said exterior wall heat-insulating plate includes an impact-resisting layer, on the inner side of said impact-resisting layer several heat-insulating material strips are spaced mutually and set, said impact-resisting layer is a concrete layer, and the heat-insulating material strip is a kind of foamed polystyrene strip, and in said impact-resisting layer interior a reinforcing rib screen is added so as to obtain the invented exterior wall heat-insulating plate. Besides, said invention also provides its construction method and concrete steps for implementing exterior wall thermal insulation.

Description

technical field [0001] The invention belongs to the technical field of building thermal insulation construction, in particular to an external wall thermal insulation board and an external wall thermal insulation construction method. Background technique [0002] The thermal insulation performance of the building envelope directly affects the heating energy consumption of the building. With the shortage of earth's energy resources and the shortage of energy supply, people pay more and more attention to energy-saving architectural design, and are included in the mandatory promotion standards of countries or regions. More and more people begin to pay attention to and devote themselves to buildings, especially Research and development of external thermal insulation technology for building exterior walls. At present, there are three commonly used construction techniques for external thermal insulation of building exterior walls: one is to bond polystyrene foam boards to the wall...

AI Technical Summary

Problems solved by technology

Among the three methods, the first one uses polystyrene foam board as the insulation material, and the construction cost is relatively low, but the contact surface between the polystyrene board and the wall substrate needs to be painted with adhesive, which is too wasteful, and it takes a while for interval painting Afterwards, it is easy to peel off, and a wind tunnel is formed between the polystyrene board and the wall matrix, until it causes the whole to fall off

In addition, the polystyrene board, elastic mortar and the exterior wall finish layer have different thermal expansion and contraction properties, and the wall surface is prone to cracking after construction, which is not beautiful but also affects the protective effect of the exterior wall finish layer and the thermal insulation effect of the thermal insulation material. ; The second type uses the foamed polyurethane layer as the insulation material, which is firmly bonded to the wall substrate during the foaming process, and does not need to be painted with adhesive, but the material cost is high, because the polyurethane layer, the elastic mortar layer and the The thermal expansion and contraction performance of the exterior wall finish layer is different, the wall is easy to crack, and the unsightly appearance also affects the protective effect of the exterior wall finish layer; the third type uses polystyrene foam particle slurry as the insulation material, and the construction is simple, but the plastering Large thickness, poor insulation effect

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