High-strength water-proof plaster block containing nonmetal nano material and preparation method thereof

Abstract

The invention discloses a high-strength waterproof plaster brick with non-metal nanometer material and making method, which comprises the following steps: 1. adding 0.3-0.5% hydrogenous silicon oil into 35-40% water; 2. adding 0.005-0.01% ammonium chloride trimethyl octadecyl; 3. blending 45-50% hemi-hydrate plaster powder, 3-10% sepiolite powder and 3-5% metolline powder into liquid; 4. pouring the liquid into moulding box; stripping; culturing; obtaining the product. The invention makes the water adsorbing rate not more than 5% within 2 h and the conversion factor over 0.75, which improves the strength by 2-8 times and increases the toughness for frame-typed non-bearing wall.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a gypsum block used for building non-load-bearing inner walls in buildings. Background technique [0002] With the ban on the use of clay bricks, a large number of alternative products have entered the construction market one after another. As an environmentally friendly green building material, gypsum blocks are also rapidly entering the construction industry; the country has also issued the standards for gypsum blocks in the building materials industry of the People's Republic of China accordingly. [0003] Common gypsum blocks currently on the market have low water resistance. With the increase of humidity, the strength of gypsum blocks decreases sharply, and the creep property of materials also gradually increases. Therefore, their use is limited. There are three reasons for the poor water resistance of gypsum. One is that gypsum has a large solubility; the other ...

AI Technical Summary

Problems solved by technology

The above methods are either expensive, or reduce the original strength, and the process is complicated in actual production, so they cannot be well popularized and applied.