Heat-preserving sheet material for exterior walls

Abstract

The invention relates to a heat-preserving sheet material for exterior walls and a preparation method for the heat-preserving sheet material. The heat-preserving sheet material for the exterior walls is prepared from the following raw materials in parts by weight: 20 parts of fly ash, 10 parts of coal cinder, 5 parts of cement, 2 parts of quicklime, 8 parts of gypsum, 10 parts of mine tailings, 6 parts of steel slag, 2 parts of ferronickel slag powder, 1 part of binder and 2 parts of flame retardant. The heat-preserving sheet material for the exterior walls, disclosed by the invention, has the advantages that the fireproof performance, compression resistance and flexural strength are high, and the heat-preserving and heat-insulating properties are good.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to an external wall insulation board. Background technique [0002] At present, in construction projects, the outer mold built-in hard foam polyurethane board and the outer mold built-in molded polystyrene board are used for the external insulation system of cast-in-place concrete external walls to carry out the external insulation construction of beams, columns and shear walls. The boards must be alkali-resistant Mesh cloth or steel wire mesh frame is reinforced, the processing technology is complicated, and the cost is expensive. During the construction, the plates must be connected and fixed with the steel bars inside the concrete, the construction process is complicated, and after 20 to 25 years of service life, this system will cause pollution and cannot be re-constructed. Contents of the invention [0003] The technical problem to be solved by the present inven...

AI Technical Summary

Problems solved by technology

[0002] At present, in construction projects, the outer mold built-in hard foam polyurethane board and the outer mold built-in molded polystyrene board are used for the external insulation system of cast-in-place concrete external walls to carry out the external insulation construction of beams, columns and shear walls. The boards must be alkali-resistant Reinforced with mesh cloth or steel wire grid, the processing technology is complicated and the cost is expensive

During construction, the plates must be connected and fixed with the steel bars inside the concrete. The construction process is complicated, and after 20 to 25 years of service life, this system will cause pollution and cannot be re-constructed