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Fly ash bricks with reduced surface porosity

A technology for fly ash bricks and fly ash, which is applied to ceramic products, other household appliances, clay products, etc., can solve problems such as unsightly appearance, dirt storage and dirt storage, etc., and achieves reduced roughness, reduced open porosity, and reduced open porosity. Effects of surface adsorption and surface aggregation

Active Publication Date: 2018-11-20
涡阳县晟丰新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, for bricks, especially floor tiles, which are usually prepared with open pores, the open surface also tends to absorb impurities or debris or the surface tends to receive and accumulate particles, which can lead to serious problems, such as dirt, Unsightly, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The present invention does not need to limit the fly ash, and the fly ash produced in coal-fired power plants can be used.

[0025] Weigh a certain weight of C-class and F-class fly ash, and then add a total of about 45-50% of water and less than about 8% of high-efficiency water reducer and mix to form a C-class fly ash mixture and a F-class fly ash mixture. grade fly ash mixture.

[0026] Aged at room temperature for 4-6 hours to make the fly ash mixture have initial curing strength.

[0027] First, the lower layer is pressed from the F-class fly ash mixture, and then the upper layer is formed by pressing the C fly ash mixture on the lower layer to form the adobe, wherein the thickness of the lower layer is greater than that of the upper layer.

[0028] After forming, it is aged at room temperature for 1 day, and then dried in an appropriate amount.

[0029] Suspending aluminum oxide nanoparticles in water forms a suspension, and the average particle size of the par...

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PUM

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Abstract

The invention provides a brick which is basically formed from fly ash and a method for forming the brick. The brick is sintered and constituted by an upper layer sintered C-grade fly ash and lower layer sintered F-grade fly ash. The strength of the brick is higher than that of clay sintered brick; the fly ash is wide in source and can be simply sintered to produce the brick; the process is simple; a large amount of fly ash can be applied; especially, F-grade fly ash with low potential application can be applied; meanwhile, at least part of pores on the surface of the fly ash brick can be provided with sintered ceramic phase such as aluminum oxide.

Description

technical field [0001] The present invention generally relates to shaped articles, such as bricks, formed from fly ash and methods of forming such articles. However, it should be understood that the present invention has wider application and may be used in the production of articles of various shapes and methods of reducing surface porosity. Background technique [0002] Fly ash is a by-product of coal combustion in coal-fired power plants. Various uses of fly ash have been considered in the prior art to both facilitate fly ash disposal and obtain economic gain. Fly ash is usually divided into F-class and C-class. F-class fly ash is mainly siliceous and has poor availability. Class C fly ash is rich in calcium oxide and has good pozzolanic reactivity. [0003] One common application is the manufacture of bricks containing fly ash. These bricks are usually sintered and hardened with fly ash mixed with clay or autoclaved with a cementitious material such as cement. Altho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/135C04B38/00C04B41/87
CPCC04B33/1352C04B38/00C04B41/5031C04B41/87C04B41/4539Y02P40/60
Inventor 唐伟
Owner 涡阳县晟丰新型建材有限公司