Gypsum-based self-healing high-strength wall material and preparation method thereof

Abstract

The invention discloses a gypsum-based self-healing high-strength wall material and a preparation method thereof. The wall material is characterized by comprising the following components in parts byweight: 40-50 parts of gypsum, 10-15 parts of an inorganic modifier, 5-8 parts of an inorganic repairing agent, 1-4 parts of anti-cracking fibers, 1-3 parts of dispersed sol, 1-3 parts of modified meerschaum powder, 0.5-2 parts of an alkaline activator and 30-40 parts of water. The wall material has the advantages that cement, slag/meta-kaolin, an alkaline activator, modified meerschaum powder, anti-cracking fibers, an inorganic repairing agent are added into the gypsum-based wall material; the gypsum-based material is endowed with self-healing capability while the mechanical property, the water resistance and the crack resistance of the gypsum-based material are improved, and the prepared gypsum-based wall material is high in strength, good in water resistance and not easy to crack and has a crack self-healing function.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a gypsum-based self-healing high-strength wall material and a preparation method of the wall material. Background technique [0002] my country is a country with a large amount of gypsum resources. The natural gypsum reserves and industrial by-product gypsum emissions both rank first in the world. Sufficient gypsum resources provide a raw material guarantee for the development of gypsum-based materials in my country. Gypsum does not need to be consumed due to its low toxicity, light weight, and processing. The characteristics of a large amount of energy make it widely used in the preparation of wall materials. Gypsum-based wall materials have a variety of excellent properties: they have excellent thermal insulation, heat insulation, fire resistance and sound insulation properties; they are light in weight and can reduce the load of buildings; they are less p...

AI Technical Summary

Problems solved by technology

In the patent "A desulfurized gypsum-based anti-static self-leveling mortar and its preparation method" (application number: CN201110268226.6), Zhang Guofang and others have effectively improved the resistance of gypsum-based materials by mixing slag powder and fly ash. Abrasive and compressive strength, overcome the shortcomings of poor water resistance; (2) mixed with fiber, in the patent "a fiber-modified gypsum-based composite material" (application number: CN2011100318614.0), Huo Jichuan et al. Vinyl alcohol fibers are mixed into gypsum-based materials to increase the strength and toughness of the product, but the heat resistance of polyvinyl alcohol fibers is poor, and the softening and decomposition temperature is low, so it is not suitable for use in wall materials

Although the problems of low strength, poor water resistance and easy cracking of gypsum-based wall materials can be effectively improved by mixing cement, slag and fibers, etc., when the wall materials are subjected to irresistible external forces in the external environment, such as wind erosion, heavy rain and Due to the impact of hail and other impacts, the wall material will still be damaged and cracked to a certain extent. In response to this phenomenon, "remedial" repairs are usually adopted at present, which virtually increases the use and maintenance costs of materials.

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