Preparation method of waterproof compressive autoclaved aerated concrete block

Abstract

The invention discloses a preparation method of a waterproof compressive autoclaved aerated concrete block, and belongs to the technical field of building materials. Aminated silicon dioxide and tri-n-dodecylamine modified tetratitanate are used for preparing modified tetratitanate, and the modified tetratitanate is dried in the carbon dioxide atmosphere, so that the modified tetratitanate adsorbing the carbon dioxide is obtained, then concentrated sulfuric acid is used for sulfonating a polystyrene microsphere, the sulfonated polystyrene microsphere is used for preparing a porous polystyrenemicrosphere under the action of a porogenic agent, the modified tetratitanate, the porous polystyrene microsphere and modified sodium lignin sulfonate are added into a basic material of a product together, and the waterproof compressive autoclaved aerated concrete block is obtained after stirring, mixing and curing the materials. A large-aperture pore in the inner part of the prepared waterproof compressive autoclaved aerated concrete block is relatively small, and the waterproof compressive autoclaved aerated concrete block is internally provided with a lamellar protection layer, so that thewaterproofness of the product is improved under the condition that the compressive strength of the product is effectively improved, and the significant progress is made by compared with the current product.

Description

technical field [0001] The invention discloses a method for preparing a waterproof and pressure-resistant autoclaved aerated concrete block, which belongs to the technical field of building materials. Background technique [0002] With the vigorous promotion of energy-saving and emission-reduction policies, the development of new non-clay, energy-saving and environmentally friendly wall materials to replace clay bricks has become an inevitable trend in the reform and development of wall materials. The promotion of new wall materials will bring huge benefits and effectively promote the development of energy saving and emission reduction work. [0003] As one of the important varieties of new wall materials, autoclaved aerated concrete blocks have many advantages such as good thermal insulation effect, good fire performance, sound insulation, light weight, and environmental protection compared with traditional clay fired bricks. It can be used not only for infill walls of fra...

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention is: the traditional autoclaved aerated concrete blocks are prone to cracking due to the large number of internal pores, resulting in a decrease in the compressive strength of the product, and the existence of a large number of pores greatly improves the waterproofness of the product. To reduce the problem, a preparation method of waterproof and pressure-resistant autoclaved aerated concrete blocks is provided

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