Self-insulation concrete slab and preparation method thereof

Abstract

The invention relates to a self-insulation concrete slab. The self-insulation concrete slab comprises a self-insulation layer and a heat insulation layer, wherein the self-insulation layer mainly consists of cement, sandstone, gravel, admixture, a water reducing agent and water; the heat insulation layer mainly consists of cement, micro iron slag powder, pulverized fuel ash, sodium lignin sulfonate, polyurethane, water and silicon dioxide. Through the adoption of the self-insulation manner of the concrete, the wall thickness is reduced, so that the secondary construction is avoided; the phenomena that the wall protection layer is cracked, the insulation material is aged, the insulation layer is loosened and bumped can be avoided while the energy is saved; the insulation layer and the structure are same in service life. The self-insulation concrete slab is small in heat transfer coefficient, excellent in insulation effect, high in crushing resistance and freezing resistance and long in service life; the self-insulation concrete slab is used as a preferred wall material of building.

Description

technical field [0001] The invention belongs to the technical field of building materials and construction, and in particular relates to a self-insulating concrete plate and a preparation method thereof. Background technique [0002] my country's building energy-saving level is far lower than that of developed countries, and the energy consumption per unit area of ​​buildings is still 3-5 times that of developed countries with similar climates. Therefore, energy saving is a basic national policy of our country. One of the key development directions is to improve the thermal insulation performance and improve the self-insulation performance of the enclosure structure. [0003] At present, there are about three types of wall insulation methods, brick-concrete structure, frame structure and building formwork structure. The traditional brick-concrete structure uses clay bricks, which is difficult to meet the energy-saving requirements of the building structure in today's society...

AI Technical Summary

Problems solved by technology

[0005] Clay ceramsite has light weight, good durability, and outstanding thermal insulation performance. Therefore, clay bricks become good wall insulation materials. However, the production of clay ceramsite consumes a lot of energy, causes serious environmental pollution, and has high cost problems. Therefore, Its use has not been greatly developed and well promoted

[0006] The application document of patent application CN201010489490 discloses a decorative and thermally integrated lightweight concrete slab, which is made of a concrete heat insulation layer and a decorative concrete surface layer. The thermal conductivity is between 0.1-0.15w / m. Its properties such as compressive strength and durability are relatively low, so it is only suitable as an insulation layer board