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Aerated concrete and preparation method thereof

A technology for aerated concrete and rhombohedral soil is applied in the field of concrete, which can solve the problems of steam curing cracking, vertical cracking, horizontal cracking and the like, and achieves the effects of simple preparation method, convenient industrial production and good quality.

Pending Publication Date: 2021-05-11
湖北丰雷环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the aerated concrete on the market has the following problems: corner cracks, horizontal cracks, vertical cracks, steam cracking and other problems are prone to occur during the cutting process

Method used

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  • Aerated concrete and preparation method thereof
  • Aerated concrete and preparation method thereof
  • Aerated concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a kind of air-entrained concrete, its preparation method, comprises the following steps:

[0027] (1) Weigh 100kg of raw materials: 10kg of sand material, 20kg of fly ash, 20kg of cement, 15kg of mortar, 0.1kg of aluminum powder or aluminum powder paste, 6kg of quicklime, 0.5kg of gypsum, 5kg of stone powder, 8kg of straw charcoal, and 3kg of magnesite , and the balance is water. Among them, magnesite, as an autoclaved expansion regulator, is a product produced by calcination of magnesite at 1100°C, which can adjust the chemical expansion of the air-entrained concrete body to match the expansion coefficient of the steel bar, and eliminate the vertical expansion of the plate. crack. Index: fMgO (effective magnesia) > 80%, select heavy-burned magnesite with a digestion time of 4-6 hours, the reaction speed of magnesite is slow during the 3-hour period of static rest, and the reaction rate gradually accelerates after 3-4 hours, so that it can Max...

Embodiment 2

[0063] This embodiment provides a kind of air-entrained concrete, its preparation method, comprises the following steps:

[0064] (1) Weigh 100kg of raw materials: 20kg of sand material, 10kg of fly ash, 32kg of cement, 5kg of mortar, 2kg of aluminum powder or aluminum powder paste, 1kg of quicklime, 1.4kg of gypsum, 1kg of stone powder, 15kg of straw charcoal, and 0.5kg of magnesite , and the balance is water.

[0065] Among them, the sand material meets the requirements of the first-class product in the JC / T 622-2009 standard, and Jiangsha can be used.

[0066] As an autoclaved expansion regulator, magnesite is a product produced by calcination of magnesite at 1250°C. It can adjust the chemical expansion of the aerated concrete body to match the expansion coefficient of the steel bar and eliminate the vertical cracks of the plate. Index: fMgO (effective magnesia) > 80%, select heavy-burned magnesite with a digestion time of 4-6 hours, the reaction speed of magnesite is slow d...

Embodiment 3

[0071] This embodiment provides a kind of air-entrained concrete, its preparation method, comprises the following steps:

[0072] (1) Weigh 100kg of raw materials: sand material 10kg, fly ash 18kg, cement 24kg, mortar 12kg, aluminum powder or aluminum powder paste 0.5kg, quicklime 4kg, gypsum 0.5kg, stone powder 5kg, straw charcoal 8kg, magnesite 2kg , and the balance is water.

[0073] Among them, the sand material meets the requirements of first-class products in the JC / T 622-2009 standard, and quartz tailing sand can be used.

[0074] As an autoclaved expansion regulator, magnesite is a product produced by calcination of magnesite at 1150°C. It can adjust the chemical expansion of the aerated concrete body to match the expansion coefficient of the steel bar, and eliminate the vertical cracks of the plate. Index: fMgO (effective magnesia) > 80%, select heavy-burned magnesite with a digestion time of 4-6 hours, the reaction speed of magnesite is slow during the 3-hour period...

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Abstract

The invention is suitable for the technical field of concrete, and provides aerated concrete and a preparation method thereof. The aerated concrete comprises the following raw materials in percentage by weight: 10-20% of sand, 10-20% of fly ash, 20-32% of cement, 5-15% of mortar, 0.1-2% of aluminum powder or aluminum powder paste, 1-6% of quick lime, 0.5-1.4% of gypsum, 1-5% of stone powder, 8-15% of straw carbon, 0.5-3% of magnesia and the balance of water. By improving the components of the aerated concrete and the preparation method of the aerated concrete, the problems of corner cracks, horizontal cracks, vertical fractures, steam-curing cracks and the like are not prone to being generated in the cutting process of the aerated concrete, and the prepared aerated concrete is good in quality and free of the situations of corner cracks, horizontal cracks, vertical fractures, steam-curing cracks and the like; the preparation method is simple and convenient for industrial production.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to an air-entrained concrete and a preparation method thereof. Background technique [0002] Air-entrained concrete is made of siliceous materials (sand, fly ash and silicon-containing tailings, etc.) , pre-curing, cutting, autoclaving, curing and other processes made of lightweight porous silicate products. Because it contains a large number of uniform and fine pores after being aerated, it is named aerated concrete. [0003] At present, the aerated concrete on the market has the following problems: corner cracks, horizontal cracks, vertical cracks, steam curing cracks and other problems are prone to occur during the cutting process. Therefore, the present application can obtain air-entrained concrete that prevents corner cracks, horizontal cracks, vertical cracks, and steam-cured cracks by improving the air-entrained concrete components and its preparation method. ...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B38/02
CPCC04B28/14C04B14/068C04B18/08C04B7/00C04B22/04C04B22/064C04B18/12C04B14/022C04B22/066C04B38/02
Inventor 刘从志张有家梁军
Owner 湖北丰雷环保科技有限公司
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