Lightweight autoclaved brick containing carbonized rice husks and preparation method of lightweight autoclaved brick

Abstract

The invention relates to a lightweight autoclaved brick containing carbonized rice husks and a preparation method of the lightweight autoclaved brick. The autoclaved brick comprises, by weight, 10-15parts of carbonized rice husks, 10-15 parts of dry calcium carbide residue, 15-20 parts of oil shale ash, 25-30 parts of fly ash, 25-30 parts of quartz sand powder, 0.2-0.5 part of cellulose ether, 0.2-0.5 part of polyvinyl alcohol, 0.1-0.3 part of triethanolamine and 0.1-0.3 part of aluminum ammonium sulfate dodecahydrate. The autoclaved brick is prepared by the materials above according to the weight. The autoclaved brick and the preparation method have the advantages that the application difficulty of the rice husks is solved, the carbonized rice husks are used as the pore-forming raw materials to produce the lightweight autoclaved brick, and the lightweight autoclaved brick is environmentally friendly, energy-saving, capable of insulating heat and sounds, and the like; the preparationmethod is simple in process, wide in raw material source and low in cost.

Description

technical field [0001] The invention belongs to the field of building material production, and more specifically relates to a carbonized rice husk lightweight autoclaved brick and a preparation method thereof. Background technique [0002] Rice husk is a by-product of rice processing. Rice husk accounts for about 20% of the weight of rice. The annual output of rice in my country is about 200 million tons, which is converted into an annual output of about 40 million tons of rice husk. The current utilization rate of rice husk is low, mainly used as feed or fungus culture medium, and the consumption is low, because rice husk has the characteristics of high ash content (7%-9%) and high silica content (about 20%), and has Good toughness, porosity, low density and rough texture, so rice husk can be used in building materials to produce lightweight building materials. [0003] At present, my country's building bricks are still mainly sintered bricks. Sintered bricks have the disa...

AI Technical Summary

Problems solved by technology

[0003] At present, my country's building bricks are still mainly sintered bricks. Sintered bricks have the disadvantages of high energy consumption, large pollution, and damage to land resources, and they are gradually being eliminated. At present, my country is vigorously promoting new building materials such as autoclaved bricks. Autoclaved bricks are A new type of wall material manufactured by using fly ash, quicklime, coal gangue, tailings slag, etc. as the main raw materials without high-temperature calcination

Evaporated bricks have the advantages of protecting farmland and saving energy and have been vigorously promoted. However, ordinary autoclaved bricks have disadvantages such as high density and poor thermal insulation and sound insulation. Therefore, it is necessary to develop new lightweight autoclaved bricks.