A large amount of fly ash composite self-insulating block and its preparation method

Abstract

The invention discloses a large-dosage coal ash composite self-insulation building block and a preparation method thereof. The building block comprises a rectangular building block body on which multiple through holes are formed through extrusion, wherein semi-open through holes are symmetrically formed on two sides of the rectangular building block body; a thermal insulation material mixed by rice hull, silicate cement and 901 glue according to mass percentage is filled in the semi-open through holes and the multiple through holes; and the thermal insulation material is compacted, flattened, naturally cured to prepare the building block. The coal ash, coal ash ceramsite, rice hull, other industrial and agricultural wastes and light materials serve as main components, and a self-insulation function can be realized. The building block has the volume density of 676-704kg / m<3>, so that the capacity of the building block is greatly reduced, and the building deadweight and construction cost are reduced. The comprehensive dosage of the coal ash is more than 70 percent, the resources are fully utilized, and waste materials are changed into valuable materials. The building block are few in holes and rows and easy to form, and the damage rate in the processing, transport and construction process is low.

Description

technical field [0001] The invention relates to a self-insulating block and a preparation method thereof, in particular to a large-volume fly ash composite self-insulation block suitable for building walls such as houses and a preparation method thereof. Background technique [0002] Fly ash is one of the largest industrial wastes in my country, and the current comprehensive utilization rate is still low, about 30%. Due to the long-term stacking of fly ash, it not only occupies and destroys a large area of ​​land, but also causes serious damage to the ecological environment and natural landscape. The use of fly ash to produce building wall materials is an effective way and has been widely used. However, the current fly ash wall materials are mainly autoclaved aerated concrete blocks, and the amount of fly ash is generally At about 60%, the production process consumes a lot of energy and causes some pollution to the environment. At the same time, the block products produced ...

AI Technical Summary

Problems solved by technology

Due to the long-term stacking of fly ash, it not only occupies and destroys a large area of ​​land, but also causes serious damage to the ecological environment and natural landscape.

The use of fly ash to produce building wall materials is an effective way and has been widely used. However, the current fly ash wall materials are mainly autoclaved aerated concrete blocks, and the amount of fly ash is generally At about 60%, the production process consumes a lot of energy and has certain pollution to the environment. At the same time, the block products produced and applied to the wall are insufficient in thermal insulation, heat insulation, energy saving, and durability.

Some fly ash porous thermal insulation blocks currently used are provided with multiple through holes on the block. Due to the excessive number of holes and rows, the production process is complicated, and the block damage rate is high during processing, handling and construction.

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