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Light-weight autoclaved aerated concrete and preparation process thereof

A technology of autoclaved aeration and concrete, which is applied to ceramic products, other household utensils, household utensils, etc. It can solve the problems of large shrinkage, low compressive strength, and easy cracking of materials, and achieve low strength and low compressive strength. Improved effect

Active Publication Date: 2015-04-29
山东京博环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned deficiencies in the existing autoclaved aerated concrete, such as low compressive strength, large material shrinkage, easy cracking, and low-density products that are not easy to produce, the present invention provides a lightweight autoclaved aerated concrete and a preparation method thereof. While ensuring the original performance of lightweight autoclaved aerated concrete, it improves the anti-split strength of the material, effectively solves the problem of cracking, reduces the shrinkage of the material, improves the compressive strength, improves the thermal resistance of the material and ensures the continuous and stable production process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A lightweight autoclaved aerated concrete, characterized in that: in parts by weight, its raw material ratio is: 65 parts of quartz sand, 20 parts of lime, 10 parts of cement, 3 parts of gypsum, 0.30 parts of aluminum powder paste, inorganic fiber 0.5 parts, 5 parts of grinding aid.

[0033] Described inorganic fiber is medium-alkali glass fiber;

[0034] The density of the light autoclaved aerated concrete is 300kg / m 3

[0035] Its concrete preparation steps are:

[0036] (1) take each raw material in proportion, for subsequent use;

[0037] (2) Add water to the quartz sand and add grinding aid therein, and wet-grind it with a ball mill to obtain quartz mortar; the fineness of quartz mortar is 0.08mm square hole sieve remaining 9%, and the density is 1480kg / m 3 .

[0038] (3) After the lime block is crushed with a jaw crusher, it is ground with a ball mill to obtain lime powder; the lime powder has a fineness of 0.08mm square hole sieve with 5% remaining and an ef...

Embodiment 2

[0048] A lightweight autoclaved aerated concrete, characterized in that: in parts by weight, its raw material ratio is: 65 parts of quartz sand, 20 parts of lime, 10 parts of cement, 3 parts of gypsum, 0.3 parts of aluminum powder paste, inorganic fiber 0.5 parts, 5 parts of grinding aid.

[0049] Described inorganic fiber is medium-alkali glass fiber;

[0050] The density of the light autoclaved aerated concrete is 315kg / m 3

[0051] Its concrete preparation steps are:

[0052] (1) take each raw material in proportion, for subsequent use;

[0053] (2) Add water to the quartz sand and add grinding aid therein, and wet-grind it with a ball mill to obtain quartz mortar; the fineness of the quartz mortar is 10% of the 0.08mm square hole sieve, and the density is 1600kg / m 3 .

[0054] (3) After the lime block is crushed with a jaw crusher, it is ground with a ball mill to obtain lime powder; the lime powder is a fineness of 0.08mm square hole sieve with a residue of 7%, and a...

Embodiment 3

[0064] A lightweight autoclaved aerated concrete, characterized in that: in parts by weight, its raw material ratio is: 70 parts of quartz sand, 25 parts of lime, 13 parts of cement, 2.0 parts of gypsum, 0.32 parts of aluminum powder paste, inorganic fiber 0.6 parts, 5.5 parts of grinding aids.

[0065] Described inorganic fiber is medium-alkali glass fiber;

[0066] The density of the light autoclaved aerated concrete is 325kg / m 3

[0067] Its concrete preparation steps are:

[0068] (1) take each raw material in proportion, for subsequent use;

[0069] (2) Add water to the quartz sand and add grinding aid therein, and wet grind it with a ball mill to obtain quartz mortar; the fineness of the quartz mortar is 0.08mm square hole sieve and the remaining 8%, and the density is 1500kg / m 3 .

[0070] (3) After the lime block is crushed with a jaw crusher, it is ground with a ball mill to obtain lime powder; the lime powder is 10% fineness of 0.08mm square hole sieve, and 82% ...

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Abstract

The invention relates to a novel building material, and particularly relates to a light-weight autoclaved aerated concrete and a preparation process thereof. The autoclaved aerated concrete is prepared by adding a certain proportion of inorganic fiber into quartz sand, lime, cement, gypsum and aluminum powder paste as the main materials. Through adjusting the corresponding preparation process, not only is the low density of the product ensured, but also the material shrinkage rate and compressive strength are greatly improved, the defects of low strength, large shrinkage and easy cracking of the autoclaved aerated concrete are solved, and the light-weight autoclaved aerated concrete and the preparation process thereof can be widely popularized and used.

Description

technical field [0001] The invention relates to a novel building material, in particular to a lightweight autoclaved aerated concrete and a preparation method thereof. Background technique [0002] At present, the country is vigorously promoting the innovation of wall panels and the promotion of energy-saving buildings. Aerated concrete is a very good building envelope material. It not only has the characteristics of light weight, fire resistance, machinability, heat insulation, sound insulation and heat preservation, but Green and environmentally friendly new building materials. However, according to the actual application situation in the current market, because of its composition materials and production process, there are a lot of air bubbles inside the material, which makes the air-entrained concrete shrinkage rate is relatively large, the compressive strength is low, and it is prone to cracking, which affects the performance of the wall. The above disadvantages are mo...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B28/14C04B14/44
Inventor 胡树峰王明军魏新刘立勇赵昌
Owner 山东京博环保材料有限公司
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