Aerated concrete block and preparation method thereof

A technology of aerated concrete and blocks, which is applied in the field of building materials, can solve the problems of large drying shrinkage, poor heat insulation, and low strength, and achieve good heat and sound insulation performance, superior waterproof performance, and small drying shrinkage. Effect

Inactive Publication Date: 2017-09-29
肥西县碧涛建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a new type of wall material, air-entrained concrete is a low-energy, environmentally-friendly new building material, which belongs to the building materials promoted by the state. However, because ordinary air-entrained concrete is made of cement, fly ash, quicklime, gypsum, etc. Large shrinkage value, low strength, water seepage, non-corrosion resistance, poor heat insulation, single source of material, etc. Therefore, further research on aerated concrete block technology is urgently needed to further meet market requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An aerated concrete block, comprising the following raw materials: 60kg of modified fly ash, 40kg of slag Portland cement, 15kg of kaolin, 10kg of polypropylene fiber, 5kg of barium ice feldspar powder, 5kg of aerated aluminum powder, and 5kg of heulandite powder , tetrachloroisophthalonitrile emulsion 4kg, benzoic acid 4kg, ethyl p-hydroxybenzoate 3kg, dimethyl sulfoxide 2kg, early strength agent 1kg, water reducer 1kg, water enhancer 1kg, foaming agent 1kg and stabilizer Foaming agent 1kg;

[0026] The modified fly ash is prepared through the following steps: the fly ash is ball-milled and dispersed with alcohol for 2 hours, and then 2% of its weight of alkyl glucoside, 1% of tricresyl phosphate and 7% of Deionized water was stirred and heated in a constant temperature water bath at 60°C for 40 minutes to obtain a dispersion, and then an aluminum sulfate solution with a concentration of 25% equivalent to 10% of its weight was added to the dispersion, and an appropriat...

Embodiment 2

[0034] An aerated concrete block, comprising the following raw materials: 70kg of modified fly ash, 50kg of slag Portland cement, 20kg of kaolin, 15kg of polypropylene fiber, 10kg of barium ice feldspar powder, 10kg of aerated aluminum powder, and 10kg of heulandite powder , tetrachloroisophthalonitrile emulsion 8kg, benzoic acid 6kg, ethyl p-hydroxybenzoate 5kg, dimethyl sulfoxide 4kg, early strength agent 3kg, water reducer 2kg, water enhancer 2kg, foaming agent 3kg and stabilizer Foaming agent 3kg;

[0035] The modified fly ash is prepared through the following steps: the fly ash is ball-milled and dispersed with alcohol for 3 hours, and then 3% of its weight of alkyl glucoside, 2% of tricresyl phosphate and 8% of Deionized water was stirred and heated in a constant temperature water bath at 65°C for 45 minutes to obtain a dispersion, and then a 25% aluminum sulfate solution equivalent to 15% of its weight was added to the dispersion, and an appropriate amount of ammonia wa...

Embodiment 3

[0043] An aerated concrete block, comprising the following raw materials: 80kg of modified fly ash, 60kg of slag Portland cement, 25kg of kaolin, 20kg of polypropylene fiber, 15kg of barium ice feldspar powder, 15kg of aerated aluminum powder, and 15kg of heulandite powder , tetrachloroisophthalonitrile emulsion 12kg, benzoic acid 8kg, ethyl p-hydroxybenzoate 7kg, dimethyl sulfoxide 6kg, early strength agent 5kg, water reducer 3kg, water enhancer 3kg, foaming agent 5kg and stabilizer Foaming agent 5kg;

[0044] The modified fly ash is prepared through the following steps: the fly ash is ball milled and dispersed with alcohol for 4 hours, and then 4% of its weight is added to the alkyl glucoside, 3% of tricresyl phosphate and 9% of Deionized water was stirred and heated in a constant temperature water bath at 70°C for 50 minutes to obtain a dispersion, and then an aluminum sulfate solution with a concentration of 25% equivalent to 20% of its weight was added to the dispersion, ...

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Abstract

The invention discloses an aerated concrete block and a preparation method thereof, and relates to the technical field of building materials. The aerated concrete block is prepared from the following raw materials: modified pulverized fuel ash, slag Portland cement, kaolin, polypropylene fibers, baryta feldspar powder, aerated aluminum powder, heulandite powder, tetrachloroisophthalonitrile emulsion, benzoic acid, ethyl paraben, dimethyl sulfoxide, an early strength agent, a water reducing agent, a water addition agent, a foaming agent and a foam stabilizer. The preparation method comprises the steps of firstly, evenly stirring and mixing the raw materials to prepare slurry, then carrying out pouring, initial curing treatment, cutting and autoclaved curing on the slurry to obtain the aerated concrete block. The aerated concrete block is high in compression strength, good in heat resistance and sound insulation, small in drying shrinkage value, excellent in water resistance, simple to prepare, wide in raw material sources, and low in cost, thus being suitable for being popularized and used.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an aerated concrete block and a preparation method thereof. Background technique [0002] As a new type of wall material, air-entrained concrete is a low-energy, environmentally-friendly new building material, which belongs to the building materials promoted by the state. However, because ordinary air-entrained concrete is made of cement, fly ash, quicklime, gypsum, etc. Large shrinkage value, low strength, water seepage, no corrosion resistance, poor heat insulation, single source of material, etc. Therefore, further research on aerated concrete block technology is urgently needed to further meet market requirements. [0003] Fly ash is the fine ash collected from the flue gas after coal combustion. Fly ash is the main solid waste discharged from coal-fired power plants. Fly ash is widely used in new building materials. Studies have shown that adding appropriate fly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/08C04B38/02C04B20/02B28B1/14B28B11/24C04B111/27C04B111/52C04B111/40
CPCC04B28/08B28B1/14B28B11/245C04B20/023C04B38/02C04B2111/27C04B2111/40C04B2111/52C04B2201/32C04B2201/50C04B18/08C04B14/106C04B16/0633C04B14/041C04B22/04C04B14/047C04B24/045C04B24/16C04B2103/302C04B2103/65C04B2103/48C04B24/288C04B24/121C04B24/04C04B22/085C04B22/124C04B22/12
Inventor 俞克波
Owner 肥西县碧涛建材有限公司
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