Waterproof and antifreezing air-entrapping brick and preparation method thereof

Abstract

The invention discloses a waterproof and antifreezing air-entrapping brick and a preparation method thereof. The preparation method of the air-entrapping brick comprises the following steps: mixing unslaked lime, modified fly ash, basalt and nanometer stannic oxide, grinding, adding tap water, and stirring uniformly to obtain a sizing agent; adding plant fiber into deionized water, carrying out ultrasonic dispersion, then adding modified graphene, heating and stirring, and continuously adding calcium gluconate, citric acid, acetic anhydride and N,N'-ethylenedi(stearamide) to obtain a mixed sizing agent; pouring the sizing agent and the mixed sizing agent into a mold in sequence to obtain a brick blank, and then carrying out steam curing to obtain the air-entrapping brick. The air-entrapping brick prepared through the materials and the method has good mechanical strength and excellent waterproof and antifreezing performance, and is applicable for being used in low-temperature moisture environments.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a waterproof and frost-resistant aerated brick and a preparation method thereof. Background technique [0002] Aerated bricks are aerated bricks produced by high-temperature autoclaved equipment, that is, bricks produced by various other processes including autoclaved. It is unique in that it is a very light thermal insulation Hot new building wall materials. The biggest advantage of aerated bricks is to save land resources, without wasting a lot of cultivated land. Its raw materials are widely used. Ash sand, slag, fly ash and coal gangue are all raw materials for aerated bricks. After mixing the raw materials into mortar, Then through the molding process to make aerated bricks. At present, the composition and properties of the mortar prepared by most manufacturers are not perfect enough, resulting in defects such as low strength, easy to burst, weak water resistance, poor he...

AI Technical Summary

Problems solved by technology

At present, the composition and properties of the mortar prepared by most manufacturers are not perfect, which leads to defects such as low strength, easy to burst, weak water resistance, poor heat preservation and temperature resistance of the manufactured aerated bricks. In areas with low temperature or when the temperature changes greatly, Some products with poor antifreeze performance will experience a sudden drop in strength and other properties, which poses a major safety hazard