Steam-press air-entrainment concrete self-heat conserving building block by using sand of Yellow River and preparation method

A self-insulating block and autoclaved aeration technology, applied in the field of building wall materials, can solve the problems of low strength, easy damage to blocks, inconvenient construction, etc., and achieve strong market competitiveness and high added value of products. , the effect of strong machinability

Active Publication Date: 2014-03-19
HENAN XIAN NEW BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Autoclaved aerated concrete self-insulating blocks use the generation of many tiny air bubbles in the concrete to achieve thermal insulation performance, but most of the autoclaved aerated concrete block products have defects of varying degrees: either the thermal insulation effect is up to standard but the strength is not high, or the block It is easy to be damaged, or the construction is inconvenien...

Method used

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  • Steam-press air-entrainment concrete self-heat conserving building block by using sand of Yellow River and preparation method
  • Steam-press air-entrainment concrete self-heat conserving building block by using sand of Yellow River and preparation method
  • Steam-press air-entrainment concrete self-heat conserving building block by using sand of Yellow River and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0034] An autoclaved aerated concrete self-insulating block prepared by using yellow river sand, including yellow river sand and coal ash from the power plant burning coal; in terms of weight percentage, its composition ratio is: yellow river sand 57%, pulverized coal Ash 16%, quicklime 12.5%, hydrated lime 2.5%, desulfurized gypsum 1.1%, aluminum powder paste 0.12%, acacia powder 0.04%, the balance is cement. SiO in the Yellow River Sand 2 The content is not less than 65%, the organic matter is not more than 2.5%, and the mud content is not more than 2.0%. The cement is PO 42.5 cement; the aluminum powder paste is a water-based aluminum powder paste.

[0035] The method for preparing the autoclaved aerated concrete self-insulating block prepared by using yellow river sand includes the following steps:

[0036] 1) Dry yellow river sand with a ball mill to a 0.08 mm square hole sieve with a fineness of not more than 10%; after crushing the quicklime with a jaw crusher, use a ba...

Embodiment 2

[0043] An autoclaved aerated concrete self-insulating block prepared by using yellow river sand, including yellow river sand and fly ash, which is waste coal after burning coal in power plants; in terms of weight percentage, its composition ratio is: yellow river sand 63%, pulverized coal Ash 5%, quicklime 13%, hydrated lime 2.6%, desulfurized gypsum 2.0%, aluminum powder paste 0.11%, tea saponin 0.02%, and the balance is cement. SiO in the Yellow River Sand 2 The content is not less than 65%, the organic matter is not more than 2.5%, and the mud content is not more than 2.0%. The cement is PO 42.5 cement; the aluminum powder paste is a water-based aluminum powder paste.

[0044] The method for preparing the autoclaved aerated concrete self-insulating block prepared by using yellow river sand includes the following steps:

[0045] 1) Dry yellow river sand with a ball mill to a 0.08 mm square hole sieve with a fineness of not more than 10%; after crushing the quicklime with a j...

Embodiment 3

[0052] An autoclaved aerated concrete self-insulating block prepared by using yellow river sand, including yellow river sand and coal ash from the power plant burning coal; in terms of weight percentage, its composition ratio is: yellow river sand 58%, pulverized coal Ash 6%, quicklime 13.5%, slaked lime 2.7%, desulfurized gypsum 1.6%, aluminum powder paste 0.09%, open powder 0.03%, the balance is cement. SiO in the Yellow River Sand 2 The content is not less than 65%, the organic matter is not more than 2.5%, and the mud content is not more than 2.0%. The cement is PO 42.5 cement; the aluminum powder paste is a water-based aluminum powder paste.

[0053] Refer to Example 1 for the preparation method of the above-mentioned autoclaved aerated concrete self-insulating block prepared by using yellow river sand.

[0054] Refer to GB / T11969-2008 "Test Method for Performance of Autoclaved Aerated Concrete" and GB / T10294-2008 "Determination of Steady State Thermal Resistance and Related ...

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Abstract

The invention relates to a steam-press air-entrainment concrete self-heat conserving building block by using sand of Yellow River, which comprises the Yellow River sand and waste fly ash after the coal is burned in a power plant; the concrete self-heat conserving building block comprises the following components by weight percentage: 55-63% of the Yellow River sand, 5-16% of fly ash, 12.5-15% of quicklime, 2.5-3.0% of slaked lime, 1.0-2.0% of desulfurized gypsum, 0.08-0.12% of aluminum powder paste, 0.02-0.04% of foam stabilizer and the balance of cement. The building block takes the cheap Yellow River sand as a raw material, and has the advantages of light unit weight, strong processability, low heat conduction coefficient and good self-heat conserving effect.

Description

technical field [0001] The invention belongs to the technical field of building wall materials, and in particular relates to an autoclaved aerated concrete self-insulating block prepared by using sand from the Yellow River and a preparation method thereof. Background technique [0002] From the perspective of social energy consumption structure, the energy consumption of industry, transportation and buildings is generally divided into three parts. The world's building energy consumption has reached about 1 / 3 of the total energy consumption; while my country's building energy consumption has also reached about 1 / 4 of the country's total energy consumption, and it is gradually increasing with the improvement of people's living standards. Among all building energy consumption, the energy consumption of building envelope accounts for a large proportion. my country's building energy conservation has been listed as a programmatic document and a rigid building index. Its core is t...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B38/02C04B14/06C04B22/04
Inventor 司政凯邓小成董恒瑞荣爱琴曹林方王安会陈晓飞
Owner HENAN XIAN NEW BUILDING MATERIALS
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