Coal ash geopolymer self-thermal-insulation building block and manufacturing technology thereof

A technology of geopolymer and self-insulating blocks, which is applied in the field of material engineering, can solve the problems of short service life, poor heat preservation, and low safety, and achieve the effects of environmental protection, strong freeze-thaw resistance, and low thermal conductivity

Inactive Publication Date: 2013-07-31
张书源
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to produce a self-insulating block of fly ash geopolymer to solve the problems of low fireproof performance, low safety, poor thermal insulation, short service life, high cost and serious pollution of existing thermal insulation materials, and Use waste fly ash and mineral powder to reduce a series of environmental problems caused by fly ash and mineral powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] 1. Pulping: Add clear water at 60°C to the mixer, and the water-cement ratio (the ratio of water to the sum of the weights of fly ash and slag micropowder) is 1 / 2. Add 90% of raw material fly ash, 8% mixed activator, 1% slag micropowder, and 1% foam stabilizer into the mixer, and stir for 12 minutes to make it fully stirred evenly.

[0017] 2. Foaming: Add hydrogen peroxide, the ratio of hydrogen peroxide to ash (the ratio of hydrogen peroxide to the sum of the weight of fly ash and slag micropowder) is 27 / 1000, stir for 8 minutes, put the slurry into the mold, and let it rest for 9 hours.

[0018] 3. Steam curing: Steam the slurry that has stopped foaming for 1 day with steam at 115°C.

[0019] 4. Cutting: Cut the hardened bulk slurry into the thickness and size required by the customer.

[0020] 5. Product inspection: Eliminate defective products and obtain qualified products of fly ash geopolymer self-insulation blocks.

example 2

[0022] 1. Pulping: Add clear water at 20°C to the mixer, and the water-cement ratio (the ratio of water to the sum of the weights of fly ash and slag micropowder) is 1.2 / 1. Add 61% of raw material fly ash, 25% of mixed activator X, 10% of slag micropowder, and 4% of foam stabilizer into the mixer, and stir for 5 minutes to make it fully stirred evenly.

[0023] 2. Foaming: Add hydrogen peroxide, the ratio of hydrogen peroxide to ash (the ratio of hydrogen peroxide to the sum of the weight of fly ash and slag micropowder) is 71 / 1000, stir for 2 minutes, put the slurry into the mold, and let it stand for 2 hours.

[0024] 3. Steam curing: the foamed slurry is steamed with 60°C steam for 6 days.

[0025] 4. Cutting: Cut the hardened bulk slurry into the thickness and size required by the customer.

[0026] 5. Product inspection: Eliminate defective products and obtain qualified products of fly ash geopolymer self-insulation blocks.

example 3

[0028] 1. Pulping: Add clear water at 45°C to the mixer, and the water-cement ratio (the ratio of water to the sum of the weights of fly ash and slag micropowder) is 1 / 1. Add 70% of raw material fly ash, 10.5% of mixed activator X, 18% of slag powder, and 1.5% of foam stabilizer into the mixer, and stir for 8 minutes to make it fully stirred evenly.

[0029] 2. Foaming: Add hydrogen peroxide, the ratio of hydrogen peroxide to ash (the ratio of hydrogen peroxide to the sum of the weights of fly ash and slag micropowder) is 53 / 1000, stir for 5 minutes, put the slurry into the mold, and let it stand for 4 hours.

[0030] 3. Steam curing: Steam the slurry that has stopped foaming with 95°C steam for 3 days.

[0031] 4. Cutting: Cut the hardened bulk slurry into the thickness and size required by the customer.

[0032] 5. Product inspection: Eliminate defective products and obtain qualified products of fly ash geopolymer self-insulation blocks.

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Abstract

The invention belongs to the technical field of material engineering, and relates to a coal ash geopolymer self-thermal-insulation building block and a manufacturing technology thereof. The technical scheme of the technology is characterized in that the coal ash geopolymer self-thermal-insulation building block is made through foaming and maintaining under the excitation of an alkali excitation agent by utilizing the cinerite activities of coal ash and mineral powder. The coal ash geopolymer self-thermal-insulation building block is composed of 60-95% of coal ash, 4-30% of a mixed excitant excitation agent X, 0.01-25% of mineral slag micropowder, and 0.3-5% of a foam stabilizer. The mixed excitant excitation agent X is an alkaline mixed liquid containing a plurality of ions and active materials. The coal ash geopolymer self-thermal-insulation building block has the characteristics of strong freezing and thawing resistances, low thermal conduction coefficient, same life with a building, good water resistance and high strength, and utilizes industrial wastes comprising waste coal ash, the mineral slag micropowder and the like. There is no waste discharge in the production process of a coal ash geopolymer exterior-wall self-thermal-insulation building block, so the building block is a very environmentally-friendly thermal insulation material.

Description

technical field [0001] The invention belongs to the technical field of material engineering, and relates to a fly ash geopolymer self-insulating block and a manufacturing process thereof. Background technique [0002] The energy consumption per unit area of ​​buildings in my country is still 3 to 5 times that of developed countries with similar climates. With the continuous deepening of energy-saving work in residential construction in my country, the building energy-saving method of external wall self-insulation is becoming more and more popular. Most of the existing self-insulation materials are based on inorganic materials and filled with some organic insulation materials inside, which greatly reduces their fire resistance, and the internal organic matter is easy to age and shrink, which reduces the insulation performance; the inorganic materials of a single material Self-insulation products have poor thermal insulation and low strength, which cannot meet the country's f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/02
CPCY02P40/10
Inventor 张书源
Owner 张书源
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