Autoclaved aerated concrete slab for doors and windows

An autoclaved air-entraining, concrete slab technology, applied in the field of concrete slabs, can solve problems such as drying shrinkage cracks and low strength, and achieve the effect of reducing drying shrinkage cracking and enhancing strength.

Active Publication Date: 2022-03-15
江苏冠领新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low strength and easy drying shrinkage cracks in the autoclaved aerated concrete slab for doors and windows in the prior art, the purpose of the present invention is to provide an autoclaved aerated concrete slab for doors and windows

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] An autoclaved aerated concrete slab for doors and windows, calculated in parts by weight, comprising the following components:

[0066] 60 parts of cement, 64 parts of fly ash, 48 parts of quicklime powder, 32 parts of modified ceramic waste, 11 parts of anhydrite powder, 1 part of aluminum powder and 131 parts of water.

[0067] Among them, the cement is ordinary Portland cement P.O42.5; the particle size distribution of fly ash is 10-300 μm, and the fly ash with a particle size between 10-50 μm and the fly ash with a particle size between 50-100 μm The mass ratio of fly ash to fly ash with a particle size of 100-300 μm is 4:2:1; the particle size of modified ceramic waste is 100-500 μm; the mass content of calcium sulfate in ultra-fine anhydrite powder is greater than 55%, the particle size of superfine anhydrite powder is 2-5μm; the available calcium of quicklime powder is more than 50%, the particle size of quicklime powder is 100-150μm; the particle size of aluminu...

Embodiment 2

[0082] An autoclaved aerated concrete slab for doors and windows, calculated in parts by weight, comprising the following components:

[0083] 50 parts of cement, 58 parts of fly ash, 54 parts of quicklime powder, 36 parts of modified ceramic waste, 10 parts of anhydrite powder, 0.5 parts of aluminum powder and 115 parts of water.

[0084] Among them, the cement is ordinary Portland cement P.O42.5; the particle size distribution of fly ash is 10-300 μm, and the fly ash with a particle size between 10-50 μm and the fly ash with a particle size between 50-100 μm The mass ratio of fly ash to fly ash with a particle size of 100-300 μm is 3:1:1; the particle size of modified ceramic waste is 100-500 μm; the mass content of calcium sulfate in ultra-fine anhydrite powder is greater than 55%, the particle size of superfine anhydrite powder is 2-5μm; the available calcium of quicklime powder is more than 50%, the particle size of quicklime powder is 100-150μm; the particle size of alum...

Embodiment 3

[0099] An autoclaved aerated concrete slab for doors and windows, calculated in parts by weight, comprising the following components:

[0100] 70 parts of cement, 72 parts of fly ash, 42 parts of quicklime powder, 25 parts of modified ceramic waste, 15 parts of anhydrite powder, 2 parts of aluminum powder and 145 parts of water.

[0101] Among them, the cement is ordinary Portland cement P.O42.5; the particle size distribution of fly ash is 10-300 μm, and the fly ash with a particle size between 10-50 μm and the fly ash with a particle size between 50-100 μm The mass ratio of fly ash to fly ash with a particle size of 100-300 μm is 5:3:1; the particle size of modified ceramic waste is 100-500 μm; the mass content of calcium sulfate in ultrafine anhydrite powder is greater than 55%, the particle size of superfine anhydrite powder is 2-5μm; the available calcium of quicklime powder is more than 50%, the particle size of quicklime powder is 100-150μm; the particle size of aluminu...

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Abstract

The invention discloses an autoclaved aerated concrete slab for doors and windows, which comprises the following components in parts by weight: 50-70 parts of cement, 58-72 parts of fly ash, 42-54 parts of quicklime powder, 25-36 parts of modified ceramic waste, 10-15 parts of anhydrite powder, 0.5-2 parts of aluminum powder and 115-145 parts of water. The preparation method comprises the following steps: weighing the cement and the water according to the amount, uniformly mixing, sequentially adding the fly ash, the anhydrite powder and the modified ceramic waste which are weighed according to the amount, and uniformly mixing and stirring; adding quicklime powder, stirring and mixing, adding aluminum powder, and stirring and mixing again; step 3, pouring into a prepared mold, standing, and demolding; and 4, carrying out autoclaved curing and moisturizing curing on the concrete blank. According to the invention, waste is fully reused, the strength and impact resistance of the aerated concrete slab are enhanced, the phenomenon of drying shrinkage cracking is reduced, and the aerated concrete slab also has a certain purification effect on indoor formaldehyde.

Description

technical field [0001] The invention relates to the field of concrete slabs, in particular to an autoclaved aerated concrete slab for doors and windows. Background technique [0002] The autoclaved aerated concrete slab is a new type of lightweight porous green environmental protection building material, which is based on cement, lime, silica sand, etc. After high temperature, high pressure and steam curing, the autoclaved aerated concrete slab with porous crystals is produced by reaction. Its density is lower than that of ordinary cement materials, and it has good fire resistance, fire prevention, sound insulation, heat insulation, heat preservation and other properties. [0003] However, autoclaved aerated concrete slabs have the following defects during use: low strength, poor impact resistance, loose slab quality and easy damage during handling; large drying shrinkage value, relatively prone to dry shrinkage cracks, affecting appearance quality and strength. Contents ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/16C04B38/02C04B20/10C04B18/16
CPCC04B28/16C04B20/1037C04B18/165C04B2111/00017C04B2201/50C04B7/02C04B18/08C04B22/064C04B22/04C04B38/02C04B20/04Y02W30/91
Inventor 仲爱军
Owner 江苏冠领新材料科技有限公司
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