Sintering-free washed-out sand sludge brick and preparation process thereof

Abstract

A sintering-free sand-washing mud brick, comprising the following components in parts by weight: 50-60 parts of sand-washing mud, 30-45 parts of cement, 5-10 parts of slaked lime, 0-1.1 parts of sodium chloride and 8 parts of water ~19 parts; the sodium chloride accounts for 0-2% of the total amount of cement and slaked lime, and the water accounts for 10-15% of the total amount of solid materials. The sand washing sludge is a powdery material obtained through digestion, grinding and sieving. Preferably, the slaked lime is a powdery material obtained by digesting, drying and grinding quicklime. The invention also discloses a preparation process of the sintering-free sand-washing mud brick. Beneficial effects of the present invention: sand washing silt is used as the main raw material, and the mixing amount can reach 50-60%, which not only solves the problem of stacking river silt, but also solves the problem of farmland damage caused by solid clay bricks; the preparation process is simple and the production cycle is short , to meet the requirements of energy saving and emission reduction; the product has high shape retention and excellent mechanical properties, and can be used instead of ordinary clay bricks.

Description

technical field [0001] The invention relates to a building raw material and its production process, in particular to a sinter-free sand-washing mud brick and its preparation process. Background technique [0002] Bricks are currently one of the most versatile raw materials used in construction projects. In our country, solid clay brick is still the most important wall material. Clay bricks are made of clay (including shale, coal gangue and other powders) as the main raw material, which is processed, shaped, dried and roasted with mud. The clay resources required for the production of clay bricks belong to the relatively high-quality clay in arable land. Therefore, a large amount of farmland is destroyed every year in our country due to the production of clay bricks. With the increase of our population and the reduction of cultivated land, this contradiction becomes increasingly prominent. Moreover, the preparation of clay bricks requires high-temperature calcination, whic...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned problems existing in the existing clay bricks and sinter-free silt bricks, the present invention provides a sinter-free sand-washing silt brick and its preparation process