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Normal temperature compressed flyash brick and its making method

A technology of fly ash bricks and normal temperature compression, which is applied in the field of building materials, can solve the problems of not being widely used, high energy consumption, narrow application range, etc., and achieve the effects of reduced production costs, significant economic benefits, and wide application range

Inactive Publication Date: 2003-07-02
肖劲东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Chinese Patent No. 9110966 document has announced a kind of 100% fly ash and binding agent (concentration is the water glass of 3-5%) and is mixed and pressed into shape, after the brick adobe of molding is dried in tunnel chamber, through gradually heating up to The technology of sintering into bricks at 950°C, because this technology needs to go through the sintering process, it consumes a lot of energy and will cause great damage to the environment
As another example, Chinese Patent No. 93105736 discloses an industrial alkaline liquid containing calcium chloride as an activator for high-calcium fly ash to replace the fly ash silicate produced by traditional cement and lime. The special technology of cutting blocks, load-bearing fly ash bricks and non-load-bearing fly ash bricks and heavy fly ash hollow bricks has a defect that the scope of application is narrow and cannot be widely used in ordinary fly ash and industrial costs without calcium chloride Regions with liquid resources

Method used

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Experimental program
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Effect test

Embodiment

[0012] The fly ash brick provided by the invention comprises components A and B, the weight ratio of which is 100:25-5, component A is the fly ash with a water content of 8-12% after nitrification, and component B is the concentration It is an aqueous solution of 0.5-2.5% polyenols; in the first component, including fly ash containing 0-30% aggregate, and a concentration of 10-30% aqueous solution of soluble alkali metal silicate, the weight ratio It is 100:25-5; the aqueous solution of the alkali metal silicate is the consolidation aid 1, and the aqueous solution of the polyalcohol compound is the consolidation aid 2.

[0013] The manufacturing method of the above-mentioned fly ash brick is: at room temperature, using supramolecular technology, according to the production process requirements, the consolidation aid 1 and the consolidation aid 2 are put into the loose fly ash step by step, Driven by the brick making machine or tile making machine, the fly ash is consolidated t...

example 1

[0025] Example 1: Add dry fly ash to a 10% aqueous solution of sodium silicate in a ratio of 100:25 and stir evenly, reduce the water content of the mixed fly ash to less than 10% in a drying oven, and then press the ratio of 100:25 Add a 1% polyvinyl alcohol aqueous solution in proportion, and drive it with a WR-3 microwave sample processor for 1-5 minutes; place the processed sample on a universal material testing machine for extrusion molding, and then stand it for curing after drying After seven days, it will become a hard fly ash block after waterproof treatment.

example 2

[0026] Example 2: Add dry fly ash to 10% sodium silicate aqueous solution in a ratio of 100:25 and stir evenly, reduce the water content of the mixed fly ash to less than 10% in a dry box, and then press 100:25 Proportionally add polyvinyl alcohol aqueous solution with a concentration of 1%, and drive it for 1-5 minutes with a WR-3 microwave sample processor; place the processed sample on a YZ-120 brick-making machine for extrusion molding, and then dry it for static After seven days of maintenance, it can be made into hard fly ash bricks after waterproof treatment.

[0027] The external field force used in the present invention can adopt various rays, sound waves, ultrasonic waves, microwaves and mechanical vibrations or agitation, such as external field forces produced by ultrasonic generators, vibrating rods or mixers.

[0028] The consolidation material 1 used in the present invention can be an aqueous solution of soluble alkali metal silicates such as potassium silicate a...

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Abstract

A normal temp. compressor flyash brick contains a component A consisting of nitrified flyash and a solidifying assistant A, and a component B which is the solidifying assistant B (the aqueous solution of polyvinyl alcohol). The assistant A is the aqueous solution of soluble alkali-metal silicate. It is made up through gradually adding the said assistants A and B to flyash, shaping, solidifying, water-proofing treating, natural drying.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a normal-temperature compressed fly ash brick and a preparation method thereof. Background technique [0002] Among the numerous Chinese patent technologies related to fly ash bricks, most of them must add various solid binders (such as: cement, lime, gypsum, plant fiber...). For example, Chinese Patent No. 9110966 document has announced a kind of 100% fly ash and binding agent (concentration is the water glass of 3-5%) and is mixed and pressed into shape, after the brick adobe of molding is dried in tunnel chamber, through gradually heating up to The technology of sintering into bricks at 950°C, because this technology needs to go through the sintering process, it consumes a lot of energy and will cause great damage to the environment. As another example, Chinese Patent No. 93105736 discloses an industrial alkaline liquid containing calcium ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/08C04B28/26C04B41/45
CPCC04B41/009C04B18/08C04B28/26C04B41/45C04B2103/65Y02W30/91C04B24/2623C04B20/10
Inventor 肖劲东安黛宗
Owner 肖劲东
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