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Method for treating fly ash

A treatment method and technology for fly ash, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., to achieve the effect of reducing creep, saving cement and fine aggregate, and improving workability

Inactive Publication Date: 2012-10-03
JIANGSU RONGNENG GROUP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Fly ash is processed through a reactive solution to form fly ash polymers, which are then used to produce concrete

Method used

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  • Method for treating fly ash
  • Method for treating fly ash
  • Method for treating fly ash

Examples

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Embodiment Construction

[0012] The principles and features of the present invention are described below, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0013] First prepare an active solution, which contains one or more of the following components: Na2CO3, Na2O: SiO2, Na2O: Al2O3, NaOH. The active solution is mixed in a leak-proof HDPE (high-density polyethylene) bottle. Pour the components into a bottle and add a certain amount of water. Shake in hand for 10-15 seconds to ensure it is well mixed. In most cases the temperature of the solution will rise, set it aside to cool. (About minutes or hours depending on the components).

[0014] Mix 1000g of fly ash and a small amount of ADVA (plasticizer). Then pour it into the bottle and mix with the active solution and shake for 5 minutes. The composition of the active solution is shown in Table 1 and Table 2.

[0015] Table 1

[0016]

[0017]

[0018]...

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Abstract

The invention relates to a method for treating fly ash. The fly ash can be highly used as a concrete additive. The treated fly ash is used for producing a concrete material. The fly ash is treated by an active solution to form fly ash polymer and used for producing concrete. The FI (foam index) value of the treated fly ash is reduced, and the performance of the concrete is improved.

Description

technical field [0001] The present invention relates to a method of processing fly ash to make it highly usable as a concrete additive. Background technique [0002] Fly ash is one of the largest industrial wastes in my country. With the development of the power industry, the discharge of fly ash from coal-fired power plants is increasing year by year. If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere; if it is discharged into the water system, it will cause river silting, and the toxic chemical substances in it will also cause harm to humans and organisms. A large amount of fly ash in the prior art is disposed in landfill or similar waste large containment facilities, and a small amount of fly ash is used as a concrete additive. Fly ash can partially replace cement and improve some performance of concrete composition. However, not all fly ash is suitable as a concrete additive. For example, fly ash, which contains carbon likely...

Claims

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Application Information

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IPC IPC(8): C04B22/00C04B18/08B09B3/00
CPCY02W30/91
Inventor 李为康
Owner JIANGSU RONGNENG GROUP
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