A kind of fly ash autoclaved aerated concrete block

A concrete block, autoclaved gas filling technology, applied to ceramic products, other household utensils, household utensils, etc., can solve the problems of decreased adhesion between mortar and block, difficulty in normal hydration, and wall cracking, etc., to achieve Not easy to crack and hollow, reduce the drying shrinkage value, the effect of small drying shrinkage value

Active Publication Date: 2021-09-17
襄阳华壁新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, after the autoclaved aerated concrete blocks are built into a wall, the wall is prone to cracking
For example, Zhou Chunying and others pointed out in the research on the water absorption characteristics of autoclaved aerated concrete blocks published in the Journal of Wuhan University of Technology, Volume 29, No. 4, in April 2007, that the aerated concrete blocks are The blocks directly absorb water from the mortar, which makes the mortar dry and difficult to hydrate and harden normally, resulting in a decrease in the bonding force between the mortar and the block, causing serious damage such as cracking, hollowing, and falling off of the mortar

Method used

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  • A kind of fly ash autoclaved aerated concrete block
  • A kind of fly ash autoclaved aerated concrete block
  • A kind of fly ash autoclaved aerated concrete block

Examples

Experimental program
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Effect test

Embodiment 1

[0027]Example 1: A fly ash autoclaved aerated concrete block. The raw materials include water and materials, and the mass ratio of water and materials is 0.56:1. Each component and its content in the material are shown in Table 1, wherein the admixture includes 80kg acrylamide / butyl acrylate / vinyl acetate / 2-acrylamide-2-methylpropanesulfonic acid tetrapolymer, 20kg polyglycerol Ricinoleate and 20 kg calcium cyclamate.

[0028] The preparation method of acrylamide / butyl acrylate / vinyl acetate / 2-acrylamide-2-methylpropanesulfonic acid tetrapolymer is as follows: in parts by weight, get 180 parts of butyl acrylate and 180 parts of vinyl acetate , 150 parts of acrylamide, mixed to get reagent A; take 15 parts of 2-acrylamido-2-methylsulfonic acid, mix with 15 parts of water to get reagent B; take 2 parts of potassium persulfate and dissolve in 10 parts In water, get reagent C; take 4 parts of ethoxylated nonylphenol sulfosuccinic acid half ester disodium salt, 1 part of sodium st...

Embodiment 2

[0030] Example 2: A fly ash autoclaved aerated concrete block, the difference from Example 1 is that the mass ratio of water and material in the raw material is 0.55:1, and the components and contents of the material are shown in Table 1 , admixtures include 75kg acrylamide / butyl acrylate / vinyl acetate / 2-acrylamido-2-methylpropanesulfonic acid tetrapolymer, 12.5kg polyglycerol ricinoleate and 12.5kg cyclohexyl sulfamate Calcium acid.

[0031] The preparation method of acrylamide / butyl acrylate / vinyl acetate / 2-acrylamide-2-methylpropanesulfonic acid tetrapolymer is as follows: in parts by weight, 195 parts of butyl acrylate and 195 parts of vinyl acetate , 160 parts of acrylamide, mixed to get reagent A; take 20 parts of 2-acrylamido-2-methylsulfonic acid, mix with 15 parts of water to get reagent B; take 3 parts of potassium persulfate and dissolve in 10 parts In water, get reagent C; take 6 parts of ethoxylated nonylphenol sulfosuccinic acid half ester disodium salt, 2 parts...

Embodiment 3

[0032] Example 3: A fly ash autoclaved aerated concrete block, the difference from Example 1 is that the mass ratio of water and material in the raw material is 0.6:1. Each component and its content in the material are shown in Table 1, wherein the admixture includes 120kg acrylamide / butyl acrylate / vinyl acetate / 2-acrylamide-2-methylpropanesulfonic acid tetrapolymer, 30kg polyglycerol Ricinoleate and 30kg calcium cyclamate.

[0033] The production method of the fly ash autoclaved aerated concrete block comprises the following steps, step one, screening the fly ash, grinding the fly ash finely, after screening with a sieve, weighing the fly ash of formula quantity; step two, Slurry making, take fly ash and water with a formula quantity of 99%, and mix them evenly to obtain a slurry; Step 3, batching, weigh lime, gypsum, cement, and admixtures, and add them to the slurry; weigh aluminum powder and formula Measure 1% of water, mix evenly to obtain a mixed solution, add the mixed...

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Abstract

The invention relates to the technical field of building material preparation, and discloses a fly ash autoclaved aerated concrete block. The raw materials include materials and water, and the mass ratio of water and materials is 0.55-0.6:1; Including the following components, 3000-3500 parts of fly ash; 350-400 parts of lime; 250-320 parts of gypsum; 280-330 parts of cement; 2-4 parts of aluminum powder; The invention has the following advantages and effects: using industrial waste slag fly ash as raw material, reducing the discharge of fly ash and protecting the environment; the admixture in the material can improve the hydrophobicity of the pores of the fly ash autoclaved aerated concrete block , reduce its absorption of water from the applied mortar, and can significantly reduce the drying shrinkage value of the fly ash autoclaved aerated concrete block, reduce the deformation of its drying shrinkage, and achieve environmental protection, small drying shrinkage value, masonry The effect of cracking, hollowing and deformation is not easy to appear behind the wall.

Description

technical field [0001] The invention belongs to the technical field of building material preparation, in particular to a fly ash autoclaved aerated concrete block. [0002] technical background [0003] With the development of society and the huge consumption of energy, building energy conservation has become a worldwide trend, and there is also a new demand for new wall materials. Autoclaved aerated concrete is made of siliceous materials and calcareous materials as the main raw materials, mixed in proportion, blended, stirred with water, and added with an air-generating agent and other materials, and then poured, statically stopped, embryo body cut and steamed. A lightweight porous building material made by pressing and curing processes. Due to the advantages of low bulk density, thermal insulation, good shock resistance, and strong constructability, aerated concrete is mostly used as a filling wall and is widely used in the construction industry. [0004] However, after t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/02C04B28/00
CPCC04B28/00C04B2111/40C04B18/08C04B22/064C04B22/04C04B22/143C04B24/2688C04B24/283C04B24/16C04B38/02
Inventor 刘传忠陈龙
Owner 襄阳华壁新型建材有限公司
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