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Autoclaved aerated concrete block and preparation method thereof

A concrete block and autoclaved aeration technology, which is applied to building components, buildings, building structures, etc., can solve the problems of poor product strength and frost resistance, unreasonable ratio of raw materials, and unsatisfactory quality of finished products. Achieve the effect of improving building energy-saving effect, saving land resources and easy processing

Inactive Publication Date: 2018-03-06
广西中裕新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there are two main deficiencies in aerated concrete block products. One is that the formula is unreasonable, resulting in poor product strength and frost resistance;
There are many ways to produce aerated concrete block products using fly ash, lime and gypsum as the main raw materials, but most of them use cement as one of the raw materials, and the ratio of raw materials is not reasonable, and the parameters in the processing process have not been mastered. , resulting in unsatisfactory finished product quality

Method used

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  • Autoclaved aerated concrete block and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An autoclaved aerated concrete block, which includes the following components in parts by weight: 86 parts of power plant bottom ash, 45 parts of river silt, 39 parts of tailings slag, 6 parts of cement, 15 parts of lime, and 3 parts of desulfurized gypsum 1.2 parts of aluminum powder, 0.3 parts of water-reducing agent, and 0.4 parts of water-retaining agent;

[0028] Wherein the power plant furnace bottom ash fineness 0.08mm hole sieve is 20%; the power plant furnace bottom ash includes the following components by weight percentage: silicon dioxide 52%, aluminum oxide 15%, iron oxide 2%, ferrous oxide 6 %;

[0029] Calcium oxide content in river silt is 94%, and the sieve residue of 0.08mm hole is 15%.

[0030] Among them, the water reducer is a polycarboxylate water reducer, which is prepared from 2 parts of polyethylene glycol monomethyl ether, 4-8 parts of unsaturated carboxylic acid, 7 parts of tartaric acid, and 10 parts of deionized water; Mix methyl cellulose ...

Embodiment 2

[0039] An autoclaved aerated concrete block, which comprises the following components in parts by weight: 72 parts of power plant bottom ash, 55 parts of river silt, 33 parts of tailings slag, 10 parts of cement, 18 parts of lime, and 4 parts of desulfurized gypsum 0.5 parts, aluminum powder 0.5 parts, water reducing agent 0.5 parts, water retaining agent 0.5 parts;

[0040] Wherein the power plant bottom ash fineness 0.08mm hole sieve is 15%; the power plant bottom ash includes the following components by weight percentage: silicon dioxide 45%, aluminum oxide 20%, iron oxide 3%, ferrous oxide 3% %;

[0041] The calcium oxide content in river silt is 86%, and the sieve residue of 0.08mm hole is 18%.

[0042] Among them, the water reducer is a polycarboxylate water reducer, which is prepared from 8 parts of polyethylene glycol monomethyl ether, 6 parts of unsaturated carboxylic acid, 8 parts of tartaric acid, and 5 parts of deionized water; Hydroxyl cellulose ether, hydroxypr...

Embodiment 3

[0051] An autoclaved aerated concrete block, which comprises the following components in parts by weight: 80 parts of power plant bottom ash, 65 parts of river silt, 35 parts of tailings slag, 5 parts of cement, 20 parts of lime, and 2 parts of desulfurized gypsum 0.8 parts of aluminum powder, 0.7 parts of water reducing agent, and 0.2 parts of water retaining agent;

[0052] Among them, the power plant bottom ash with a fineness of 0.08mm hole sieve is 18%; the power plant bottom ash includes the following components by weight percentage: 50% silicon dioxide, 23% aluminum oxide, 1% iron oxide, and 5% ferrous oxide. %;

[0053] Calcium oxide content in river silt is 90%, and the sieve residue of 0.08mm hole is 12%.

[0054] Among them, the water reducer is a polycarboxylate water reducer, which is prepared from 10 parts of polyethylene glycol monomethyl ether, 4-8 parts of unsaturated carboxylic acid, 6 parts of tartaric acid, and 8 parts of deionized water; Mix methyl cellu...

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Abstract

The invention discloses an autoclaved aerated concrete block, and belongs to the technical field of preparation of autoclaved aerated concrete. The autoclaved aerated concrete block contains the following components in parts by weight: 72-86 parts of furnace bottom ash of a power plant, 45-65 parts of silt of rivers, 33-39 parts of tailings slag, 5-10 parts of cement, 15-20 parts of lime, 2-4 parts of desulphurized gypsum, 0.5-1.2 parts of aluminium powder, 0.3-0.7 parts of a water reducing agent, and 0.2-0.5 parts of a water retaining agent. The autoclaved aerated concrete block is a novel lightweight heat insulation building material, has the advantages of being relatively high in strength, light in mass, easy to process, convenient to construct, relatively low in manufacture cost, relatively good in heat insulation, sound insulation and fire resistant performances, and is a novel low-carbon and environment-friendly wall material which can be popularized energetically by the nation and be recycled.

Description

technical field [0001] The invention belongs to the technical field of concrete block preparation, and in particular relates to an autoclaved aerated concrete block and a preparation method thereof. Background technique [0002] At present, the use of solid clay bricks is prohibited in my country, and the use of lightweight, energy-saving, and heat-insulating aerated concrete block bricks is advocated. In the prior art, aerated concrete block products mainly have two deficiencies. One is that the formula is unreasonable, resulting in poor product strength and frost resistance; There are many ways to produce aerated concrete block products using fly ash, lime and gypsum as the main raw materials, but most of them use cement as one of the raw materials, and the ratio of raw materials is not reasonable, and the parameters in the processing process have not been mastered. , leading to unsatisfactory finished product quality. [0003] Autoclaved aerated concrete blocks are made...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B38/02E04C1/00C04B111/40C04B111/52
Inventor 朱鹏飞罗伦王加成齐庆东陆成林穆庆伍
Owner 广西中裕新型建材有限公司
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