Autoclaved fly ash brick

A technology of autoclaving fly ash bricks and fly ash, which is applied in the field of building materials, can solve the problems of high cost, high price, and low amount of fly ash, and achieve the effect of saving land

Inactive Publication Date: 2012-05-16
孙清海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the above-mentioned autoclaved fly ash hollow bricks are: the admixture of fly ash is low, and the price of lime and cement is high, resulting in high brick cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Ingredients: fly ash 50, carbide slag 15, medium fine sand 20, quicklime 8, gypsum 2, cement 8.

[0016] Manufacturing process: Add water and stir the above raw materials to obtain a mixture with a moisture content of 11%, digest the mixture, shape it, and finally make autoclaved fly ash bricks after high temperature and high pressure curing; the curing pressure is 0.8MPa, and the curing temperature is 174°C, curing time is 10h. Made into 240mm×115mm×53mm autoclaved fly ash bricks.

[0017] After testing, the compressive strength of the autoclaved fly ash bricks produced is greater than 20 MPa, and can withstand the frost resistance requirements of 15 freeze-thaw cycles.

Embodiment 2

[0019] Ingredients: fly ash 60%, carbide slag 15%, medium fine sand 25%, quicklime 14, gypsum 2, cement 8.

[0020] Manufacturing process: Add water and stir the above raw materials to obtain a mixture with a moisture content of 11%, digest the mixture, shape it, and finally make autoclaved fly ash bricks after high temperature and high pressure curing; the curing pressure is 0.8MPa, and the curing temperature is 174°C, curing time is 10h. Made into 240mm×115mm×53mm autoclaved fly ash bricks.

[0021] After testing, the compressive strength of the autoclaved fly ash bricks prepared by the two ingredients is greater than 15 MPa, and can withstand the frost resistance requirements of 15 freeze-thaw cycles.

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Abstract

The invention discloses an autoclaved fly ash brick, which relates to the technical field of construction materials. The autoclaved fly ash brick is characterized by being prepared from the following components in percentage by weight: 50-60 percent of fly ash, 10-15 percent of carbide slag, 20-25 percent of medium and fine sand, 7-14 percent of quicklime, 1-2 percent of gypsum and 5-8 percent of cement. The autoclaved fly ash brick has the beneficial effects that: the adding amount of the fly ash is high, and the cost of the autoclaved fly ash brick is lowered. As proved by detection, each technical index of the autoclaved fly ash brick manufactured by adopting the scheme reaches the national standard.

Description

technical field [0001] The invention relates to a building material, in particular to an autoclaved fly ash brick with fly ash as the main raw material. Background technique [0002] Autoclaved fly ash brick is a new wall material, which is widely used in the interior and exterior walls of various civil buildings, public buildings and industrial plants, as well as the foundation of houses. It is a product that replaces fired clay bricks. Autoclaved bricks are made of lime and quartz sand, sand or fine sandstone in an appropriate proportion, which are ground, mixed with water, pressed into shape by semi-dry method, and cured by autoclaving. At present, autoclaved fly ash bricks are generally made of fly ash and coal gangue discharged from power plants as the main raw materials, together with cement, lime, and yellow sand. After mixing, digestion, and molding, they are made by high temperature and high pressure curing. The active components in the brick fully undergo hydroth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B18/30
CPCY02W30/91
Inventor 孙清海
Owner 孙清海
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