Particle pretreatment wrapping technology capable of reducing water-absorbing rate of ceramsite

Abstract

The invention relates to a particle pretreatment wrapping technology capable of reducing the water-absorbing rate of ceramsite. The particle pretreatment wrapping technology capable of reducing the water-absorbing rate of the ceramsite comprises the following steps: 1, mixing 2 parts of a surfactant and 100 parts of water uniformly into a mixture of the surfactant and the water; 2, spraying the mixture of the surfactant and the water on the surfaces of the ceramsite particles to preliminarily wet the ceramsite particles; 3, stirring sulfoaluminate cement according to the proportion to form flowing cement paste; 4, spraying the cement paste on the ceramsite particles until the ceramsite particles are wrapped completely, and discharging; and 5, maintaining for 6 hours under the condition ofroom temperature and forming a uniform wrapping layer with the thickness of 1 to 2 mm at the outer part of the ceramsite after the sulfoaluminate cement is completely set and hardened. The surface ofthe ceramsite with high water-absorbing rate is wrapped with one high-strength sulfoaluminate cement shell layer; the wrapped ceramsite has high strength; and the water-absorbing property of the particles can be obviously reduced and the water-absorbing rate per hour is only 0.5 percent.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a particle pretreatment wrapping technology for reducing the water absorption rate of ceramsite, which is mainly used in the production of thermal insulation wall panels for prefabricated buildings such as residential houses and office buildings. Background technique [0002] The ceramsite wall insulation material has the advantages of good thermal insulation, low price, and convenient construction. It is the development direction of building energy-saving wall materials in my country. [0003] However, ceramsite has the characteristics of high porosity and high water absorption. The increase in water consumption during the mixing process destroys the solidification cycle of the mortar, greatly reduces the mechanical properties of the mortar, and easily produces hollowing and cracking, which seriously affects the entire insulation. Thermal performance and d...

AI Technical Summary

Problems solved by technology

[0003] However, ceramsite has the characteristics of high porosity and high water absorption. The increase in water consumption during the mixing process destroys the solidification cycle of the mortar, greatly reduces the mechanical properties of the mortar, and easily produces hollowing and cracking, which seriously affects the entire insulation. System thermal performance and durability

The above-mentioned shortcomings limit the large-scale application of ceramsite insulation wallboard in the construction field, but there is no relevant solution at present

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