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High performance aerated concrete and production method thereof

A kind of technology of air-entrained concrete and production method, applied in the direction of climate sustainability, other household appliances, sustainable waste treatment, etc., can solve the problems of air-entrained concrete shrinkage, lack of strength, etc., to reduce the occurrence of wall cracks and strength High, unique effect

Inactive Publication Date: 2008-12-24
南通建工集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing air-entrained concrete has deficiencies in shrinkage, strength, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The mixture is mixed with water in a ratio of 1:0.5, shaped and maintained to obtain a product; the mixture consists of the following components by weight:

[0029] Quartz tailings powder 60%

[0030] Lime 33%

[0031] Cement 3%

[0032] Desulfurized gypsum 3.95%

[0033] Aluminum powder paste 0.05%.

[0034] The maintenance adopts the pressurized curing method, that is, the formed aerated concrete is put into an autoclave for treatment, and the pressure in the autoclave is 1-1.5Mpa. First, the temperature is raised to 170-200°C within 1-3 hours, and then the temperature is kept constant for 6-8 hours. Then lower the temperature and pressure to normal temperature and pressure within 1 to 3 hours.

Embodiment 2

[0036] The mixture is mixed with water in a ratio of 1:0.6, shaped and maintained to obtain a product; the mixture consists of the following components by weight:

[0037] Fly Ash 66%

[0038] Lime 12%

[0039] Cement 18%

[0040] Desulfurization gypsum 2.91%

[0041] Aluminum powder paste 0.09%.

[0042] Powdered coal powdered mineral powder activator 1%.

[0043] Among them, the fly ash mineral powder activator is the commercially available JH-I, JH-II type fly ash mineral powder activator and the like.

[0044] The maintenance adopts the pressurized curing method, that is, the formed aerated concrete is put into an autoclave for treatment, and the pressure in the autoclave is 1-1.5Mpa. First, the temperature is raised to 170-200°C within 1-3 hours, and then the temperature is kept constant for 6-8 hours. Then lower the temperature and pressure to normal temperature and pressure within 1 to 3 hours.

Embodiment 3

[0046] The mixture is mixed with water in a ratio of 1:0.7, shaped and maintained to obtain a product; the mixture consists of the following components by weight:

[0047] Fly ash and quartz tailings powder 72%

[0048] Lime 21%

[0049] Cement 5.23%

[0050] Desulfurization gypsum 0.9%

[0051] Aluminum powder paste 0.07%.

[0052] Mineral powder activator 0.7%

[0053] Tea saponin or saponin powder (as a foam stabilizer) 0.1%.

[0054] Wherein the weight ratio of fly ash and quartz tailings powder is 20-80:80-20 (eg 20:80, 50:50, 80:20).

[0055] The mineral powder activators are commercially available JH-I and JH-II mineral activators.

[0056] The maintenance adopts the pressurized curing method, that is, the formed aerated concrete is put into an autoclave for treatment, and the pressure in the autoclave is 1-1.5Mpa. First, the temperature is raised to 170-200°C within 1-3 hours, and then the temperature is kept constant for 6-8 hours. Then lower the temperature an...

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Abstract

The invention discloses a high performance aerated concrete and a method for preparing the same. The product comprises fly ash and / or quartz tailing powder, lime, cement, desulfurization gypsum and aluminum powder pastes. The preparation method comprises steps of mixing and stirring, moulding and curing. The technology of the invention is unique and easy to operate. The fly ash and quartz tailing are made full use of, which changes waste into valuables. The prepared aerated concrete has advantages of good property, low shrinkage of 0.6-07, high intension and reduces the formation of the wall crack.

Description

Technical field: [0001] The invention relates to an air-entrained concrete and a production method thereof. Background technique: [0002] The existing air-entrained concrete has deficiencies in shrinkage, strength and the like. Invention content: [0003] The object of the present invention is to provide a production method of high-performance aerated concrete with reasonable structure and good performance. [0004] Technical solution of the present invention is: [0005] A high-performance air-entrained concrete is characterized in that it consists of the following components by weight: [0006] Fly ash and / or quartz tailings powder 60~72% [0007] Lime 12~33% [0008] Cement 3~18% [0009] Desulfurization gypsum 0.4~4% [0010] Aluminum powder paste 0.035~0.095%. [0011] The dosage ratio of fly ash and quartz tailings powder is calculated by weight: fly ash:quartz tailings powder=20-80:80-20. [0012] The high-performance air-entrained concrete also contains 0....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/08C04B18/12C04B22/14C04B22/04
CPCC04B28/18C04B2111/34Y02W30/91C04B7/00C04B18/08C04B18/12C04B22/04C04B22/145C04B38/00
Inventor 朱福华朱建飞
Owner 南通建工集团股份有限公司
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