Non-autoclaved high-strength alkali-activated aerated concrete and preparation method and application thereof

An air-entrained concrete and autoclaving-free technology, applied in the field of building materials, can solve the problems of high water absorption, large shrinkage, low energy utilization rate, etc., and achieve low drying shrinkage and water absorption, energy saving and consumption reduction advantages, and high strength. Effect

Active Publication Date: 2016-11-23
河北柏联建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The autoclaved high-strength alkali-activated aerated concrete of the present invention solves the problems of high water absorption, large shrinkage and low energy utilization rate of the existing ordinary aerated concrete

Method used

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  • Non-autoclaved high-strength alkali-activated aerated concrete and preparation method and application thereof
  • Non-autoclaved high-strength alkali-activated aerated concrete and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 Preparation of Autoclaved High-strength Alkali Excited Air-Entrained Concrete

[0028] 1) Weigh 200 parts of construction gypsum, 200 parts of high-alumina cement, 320 parts of mineral powder and 80 parts of nickel slag powder and mix them evenly, then pour them into a stirring pot to obtain the mixture;

[0029] 2) Weigh 8 parts of water reducing agent and 6.4 parts of sodium hydroxide into 223.2 parts of water, and stir slowly to fully dissolve the sodium hydroxide to obtain a solution;

[0030] 3) Slowly pour the solution prepared in step 2) into the mixture prepared in step 1), and stir slowly, then stir quickly for 30 seconds and then stir slowly until a uniform slurry is formed in the stirring pot;

[0031] 4) Pour 28 parts of foaming agent into the slurry obtained in step 3) quickly, and after stirring for 6 seconds, discharge the material into a mold, and let it stand to generate gas;

[0032] 5) After 2 hours, cut off the part of the bread that is hi...

Embodiment 2

[0033] Example 2 Preparation of Autoclaved High Alkali Excited Air-Entrained Concrete

[0034] 1) Weigh 200 parts of construction gypsum, 280 parts of high alumina cement, 256 parts of mineral powder and 64 parts of nickel slag powder and mix them evenly, then pour them into a stirring pot to obtain the mixture;

[0035] 2) Weigh 8 parts of water reducer and 5.1 parts of sodium hydroxide into 223.2 parts of water, and stir slowly to fully dissolve the sodium hydroxide to obtain a solution;

[0036] 3) Slowly pour the solution prepared in step 2) into the mixture prepared in step 1), and stir slowly, then stir quickly for 50 seconds and then stir slowly until a uniform slurry is formed in the stirring pot;

[0037] 4) Pour 24 parts of foaming agent into the slurry obtained in step 3) quickly, and after stirring for 8 seconds, discharge the material into a mold, and let it stand to generate gas;

[0038] 5) After 2.5 hours, cut off the part of the bread that is higher than the ...

Embodiment 3

[0040] 1) Weigh 280 parts of construction gypsum, 200 parts of high alumina cement, 256 parts of mineral powder and 64 parts of nickel slag powder and mix them evenly, then pour them into a stirring pot to obtain the mixture;

[0041] 2) Weigh 6 parts of water reducer and 5.1 parts of sodium hydroxide into 223.2 parts of water, and stir slowly to fully dissolve the sodium hydroxide to obtain a solution;

[0042] 3) Slowly pour the solution prepared in step 2) into the mixture prepared in step 1), and stir slowly, then stir quickly for 40 seconds and then stir slowly until a uniform slurry is formed in the stirring pot;

[0043] 4) Pour 20 parts of foaming agent into the slurry obtained in step 3) quickly, and after stirring for 7 seconds, discharge the material into a mold, and let it stand to generate gas;

[0044] 5) After 2 hours, cut off the part of the bread that is higher than the mold, then let it stand for 1 day to demould, and put it in a standard curing room for curi...

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Abstract

The invention discloses a compound cementing material. The compound cementing material is made of, by weight parts, 200-280 parts of building plaster, 200-280 parts of high alumina cement, 256-320 parts of mineral powder and 64-80 parts of nickel slag. The invention further discloses non-autoclaved high-strength alkali-activated aerated concrete, and the non-autoclaved high-strength alkali-activated aerated concrete comprises the compound cementing material. The invention further discloses a method for preparing the non-autoclaved high-strength alkali-activated aerated concrete and application. The building plaster, the mineral powder, the nickel slag and the high alumina cement are made of the compound cementing material, stirring foaming is performed at a certain mixture ratio, and the aerated concrete with a dry apparent density of about 680 kg / m3 is manufactured. The concrete has the advantages of being lightweight, low in shrinkage and water absorption and high in strength, the process of steam curing of conventional aerated concrete is omitted, and the non-autoclaved high-strength alkali-activated aerated concrete has the advantages of energy saving and consumption reduction.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a non-autoclaved high-strength alkali-excited aerated concrete and a preparation method and application thereof. Background technique [0002] Due to its light weight, low thermal conductivity, good fire resistance, and non-sintered production, aerated concrete is the basic wall material to meet the needs of building energy conservation and building industrialization, and has huge market potential. In 2013, the "Green Building Materials Industry Plan" formulated by the National Development and Reform Commission and the Ministry of Housing and Urban-Rural Development was listed as "safe, durable, energy-saving and environmentally friendly, and convenient green building materials". The "Action Plan for Promoting the Production and Application of Green Building Materials" formulated by the Ministry of Industry and Information Technology and the Ministry of Housing and U...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B38/02
CPCC04B28/14C04B38/02C04B7/32C04B14/02C04B18/141C04B22/062C04B2103/302C04B22/068
Inventor 焦宝祥黄麒王韬赵景川徐凤广杨凤玲诸华君
Owner 河北柏联建筑材料有限公司
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