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A kind of fly ash autoclaved aerated concrete block and its production method

A technology of concrete blocks and autoclaved air filling, which is applied in the field of building materials preparation, can solve problems such as the decrease of the bonding force between mortar and blocks, difficulty in normal hydration, and cracking of mortar, so that it is not easy to crack and hollow, and reduces water absorption. volume, improve the effect of adhesion

Active Publication Date: 2021-03-30
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, Vol. 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 and its production method
  • A kind of fly ash autoclaved aerated concrete block and its production method
  • A kind of fly ash autoclaved aerated concrete block and its production method

Examples

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Effect test

Embodiment 1

[0027] Example 1: A fly ash autoclaved aerated concrete block. The raw materials include materials and water. In terms of mass ratio, materials: water = 1:0.56. The components in the materials are shown in Table 1. Wherein the admixture comprises 100kg of butyl acrylate / vinyl acetate / 2-acrylamido-2-methylpropanesulfonic acid terpolymer and 20kg of calcium stearoyl lactylate.

[0028] The preparation method of butyl acrylate / vinyl acetate / 2-acrylamido-2-methylpropanesulfonic acid terpolymer is as follows: in parts by weight, 180 parts of butyl acrylate and 180 parts of vinyl acetate are mixed. Obtain reagent A; take 15 parts of 2-acrylamido-2-methylpropanesulfonic acid and mix with 15 parts of water to obtain reagent B; dissolve 2 parts of potassium persulfate in 10 parts of water to obtain reagent C; take 4 parts Ethoxylated nonylphenol sulfosuccinate half ester disodium salt, 1 part sodium stearoyl lactylate, 3 parts sodium lauryl sulfate, mixed to obtain reagent D; take 0.01...

Embodiment 2

[0030] Example 2: A fly ash autoclaved aerated concrete block, the raw materials include materials and water, in terms of mass ratio, materials: water = 1:0.55. The components in the material are shown in Table 1. Wherein the admixture comprises 80kg butyl acrylate / vinyl acetate / 2-acrylamido-2-methylpropanesulfonic acid terpolymer and 20kg calcium stearoyl lactylate.

[0031] The preparation method of butyl acrylate / vinyl acetate / 2-acrylamido-2-methylpropanesulfonic acid terpolymer is as follows: in parts by weight, 195 parts of butyl acrylate and 195 parts of vinyl acetate are mixed. Reagent A is obtained; 20 parts of 2-acrylamido-2-methylpropanesulfonic acid are mixed with 15 parts of water to obtain reagent B; 3 parts of potassium persulfate are dissolved in 10 parts of water to obtain reagent C; 6 parts of Ethoxylated nonylphenol sulfosuccinate half ester disodium salt, 2 parts sodium stearoyl lactylate, 4 parts sodium lauryl sulfate, mixed to obtain reagent D; take 0.01 ...

Embodiment 3

[0033] Example 3: A fly ash autoclaved aerated concrete block, the difference from Example 1 is that, in terms of mass ratio, material: water = 1:0.6, and the components in the material are shown in Table 1 . Wherein the admixture comprises 150kg of butyl acrylate / vinyl acetate / 2-acrylamido-2-methylpropanesulfonic acid terpolymer and 30kg of calcium stearoyl lactylate.

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Abstract

The invention relates to the technical field of preparation of building materials and discloses fly ash autoclaved aerated concrete blocks and a production method thereof. The concrete blocks compriseraw materials including materials and water; the materials include, by weight, 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 and 100-180 parts of admixture; the admixture includes a butyl acrylate / vinyl acetate / 2-acrylamide-2-methylpropanesulfonic acid terpolymer and calcium stearyl lactate. The concrete blocks and the production method thereof have the following advantages and effects that industrial waste slag fly ash is used as a raw material to reduce the discharge amount and protect the environment; the admixture in the raw materials not only improves the hydrophobicity of pores of the fly ash autoclaved aerated concrete blocks, reduces the amount of water absorbed from coated mortar, but also can effectively reduce the drying shrinkage value of the blocks, reduce the deformation amount of the blocks in a drying process, and the effects that the environment is protected, the drying shrinkage valueis low and phenomena such as cracking and hollowing after the blocks are built into a wall are achieved.

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 and a production method thereof. [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 indu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14
CPCC04B28/14C04B18/08C04B22/064C04B7/00C04B22/04C04B24/2688C04B24/085
Inventor 刘传忠陈龙
Owner 襄阳华壁新型建材有限公司
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