Autoclaved aerated concrete block and preparation method thereof

A technology of concrete block and autoclaved aeration, which is applied in the field of concrete blocks, can solve the problems of unsolved slurry fluidity problem and strength quality problem, shorten the static stop time, improve the thermal insulation effect, and reduce the production cost. Effect

Active Publication Date: 2021-04-02
贵州美可斯建筑工程技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Another example is CN201711048340.1 which discloses the preparation of high-strength light-weight autoclaved aerated coagulation with power plant bottom ash, river silt, tailings slag, cement, lime, desulfurized gypsum, aluminum powder, glass fiber, lignin fiber, and foam stabilizer However, none of them has comprehensively solved the problems of slurry fluidity and strength quality.

Method used

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  • Autoclaved aerated concrete block and preparation method thereof
  • Autoclaved aerated concrete block and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] An autoclaved aerated concrete block, including raw materials: 20kg of calcareous material, 45kg of siliceous material, 6kg of fried gypsum, 0.05kg of gas-generating agent, and 10kg of phosphorus-containing waste residue;

[0032] Cement and lime in the calcareous material are 1:1 according to the mass ratio;

[0033] The calcareous material also includes calcareous shale with a system mass fraction of 2%;

[0034] The siliceous material is composed of raw materials: siliceous shale 20kg, basalt 3kg, kaolin 10kg, rhyolite 2kg;

[0035] The particle size of the siliceous material is 200 mesh;

[0036] For the roasted gypsum, mix phosphogypsum and desulfurized gypsum at a mass ratio of 5:1, grind to 100 mesh, then heat at 150°C for 30 minutes, then add 6% citric acid and Stir 2% lactic acid for 10 minutes, let it stand, and when the temperature reaches 30°C, add 0.1% lactic acid bacteria in the amount of gypsum, stir evenly, let stand for 1d, then heat to 150°C and keep...

Embodiment 2

[0050]An autoclaved aerated concrete block, including raw materials: 25kg of calcareous material, 60kg of siliceous material, 14kg of fried gypsum, 0.1kg of gas-generating agent, and 13kg of phosphorus-containing waste residue;

[0051] Cement and lime in the calcareous material are 1:1 according to the mass ratio;

[0052] The calcareous material also includes calcareous shale with a system mass fraction of 6%;

[0053] The siliceous material is composed of raw materials: siliceous shale 25kg, basalt 7kg, kaolin 15kg, rhyolite 10kg;

[0054] The particle size of the siliceous material is 300 mesh;

[0055] For the roasted gypsum, mix phosphogypsum and desulfurized gypsum at a mass ratio of 8:1, grind to 200 mesh, then heat at 170°C for 60 minutes, then add 9% citric acid and Stir 7% lactic acid for 15 minutes, let it stand, add 0.3% lactic acid bacteria in the amount of gypsum when the temperature is 50°C, stir evenly, let stand for 3 days, then heat to 170°C and keep the t...

Embodiment 3

[0069] An autoclaved aerated concrete block, including raw materials: 23kg of calcareous material, 50kg of siliceous material, 10kg of fried gypsum, 0.07kg of gas generating agent, and 11kg of phosphorus-containing waste residue;

[0070] Cement and lime in the calcareous material are 1:1 according to the mass ratio;

[0071] The calcareous material also includes calcareous shale with a system mass fraction of 4%;

[0072] The siliceous material is composed of raw materials: siliceous shale 22kg, basalt 5kg, kaolin 12kg, rhyolite 8kg;

[0073] The particle size of the siliceous material is 280 mesh;

[0074] For the roasted gypsum, mix phosphogypsum and desulfurized gypsum at a mass ratio of 7:1, grind to 100 mesh, then heat at 160°C for 40 minutes, and then add 7% citric acid and Stir 3% lactic acid for 13 minutes, let it stand, add 0.2% lactic acid bacteria in the amount of gypsum when the temperature is 40°C, stir evenly, let stand for 2 days, then heat to 160°C and keep ...

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Abstract

The invention relates to the technical field of a concrete block, in particular to an autoclaved aerated concrete block and a preparation method thereof. The autoclaved aerated concrete block is prepared by mixing calcium materials, siliceous materials, stir-fried plaster, a gas forming agent and phosphorus-containing waste slag and sequentially performing casting, still standing, cutting and autoclaved caring. Through the reasonable proportioning and process control, the internal and external quality of the product are improved; the consumption of lime and cement is reduced; the production cost is directly reduced; the still standing time is shortened; the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of concrete blocks, in particular to an autoclaved aerated concrete block and a preparation method thereof. Background technique [0002] Fly ash autoclaved aerated concrete block is made of cement, lime, fly ash, gas generating agent, air bubble stabilizer, regulator and other main raw materials. , cutting, autoclaved curing, finished product processing and other processes to manufacture porous concrete products, mainly suitable for frame structure, pouring concrete structure building exterior wall filling, interior wall partition, can also be used in multi-storey buildings with anti-seismic ring beam structure The outer wall or thermal insulation composite wall can also be used for thermal insulation and heat insulation of building roofs. Compared with traditional clay bricks, this product can save land resources, improve the thermal insulation performance of building walls, and improve the building qualit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B40/02
CPCC04B28/00C04B40/024C04B2111/76C04B2201/20C04B2201/50C04B22/064C04B18/125C04B14/14C04B14/106C04B22/143C04B18/0427C04B22/04C04B14/104C04B24/08
Inventor 钟继吴唐鹏杨步雷吉勇曾强王泽松张勇徐韦洪向前勇徐雷鸣刘小成
Owner 贵州美可斯建筑工程技术有限公司
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