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Autoclaved aerated concrete building block

A concrete block and autoclaved aeration technology, applied in the field of building materials, can solve the problems of unsatisfactory thermal insulation and thermal insulation performance, poor product strength, heavy quality and other problems, achieve excellent thermal insulation performance, improve sound absorption, improve the effect of strength

Inactive Publication Date: 2014-12-31
陶安庆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the autoclaved aerated concrete block produced by the existing production method has an unreasonable formula, resulting in poor product strength, heavy quality, poor sound absorption and sound insulation, and thermal insulation and heat insulation performance are not satisfactory.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The raw material components are as follows by weight percentage: 12% of cement, 22% of lime, 62% of fly ash, 2% of gypsum, 0.8% of aluminum powder paste, and 1.2% of admixture. Wherein, the percentage by weight of activated calcium oxide in lime is 80%, the percentage by weight of silica weight in fly ash is 65%, the content of active aluminum in aluminum powder paste is 90%, and the percentage by weight of calcium sulfate dihydrate in gypsum is 70%, the admixture is saponin powder.

[0011] After testing, the autoclaved aerated concrete block manufactured according to the raw material formula of this embodiment has a bulk density of 480kg / m 3 , the thermal conductivity is 0.10W / m·K, the compressive strength is 4.8MPa, and the sound insulation effect of the wall is 92 decibels. Its comprehensive performance is superior to similar products made with traditional technology and formula.

Embodiment 2

[0013] The raw material components are as follows by weight percentage: 10% of cement, 20% of lime, 67% of fly ash, 1.4% of gypsum, 0.6% of aluminum powder paste, and 1.0% of admixture. Wherein, the percentage by weight of activated calcium oxide in lime is 85%, the percentage by weight of silicon dioxide in fly ash is 60%, the content of active aluminum in aluminum powder paste is 95%, and the percentage by weight of calcium sulfate dihydrate in gypsum is 80%, the additive is benzene seed cake.

[0014] After testing, the autoclaved aerated concrete block manufactured according to the raw material formula of this embodiment has a bulk density of 465kg / m 3 , the thermal conductivity is 0.12W / m·K, the compressive strength is 4.6MPa, and the sound insulation effect of the wall is 88 decibels. Its comprehensive performance is superior to similar products made with traditional technology and formula.

Embodiment 3

[0016] The raw material components are as follows by weight percentage: 8% of cement, 18% of lime, 72% of fly ash, 0.8% of gypsum, 0.4% of aluminum powder paste, and 0.8% of admixture. Wherein, the percentage by weight of activated calcium oxide in lime is 90%, the percentage by weight of silica weight in fly ash is 55%, the content of active aluminum in aluminum powder paste is 95%, and the percentage by weight of calcium sulfate dihydrate in gypsum is 90%, the admixture is saponin powder.

[0017] After testing, the autoclaved aerated concrete block manufactured according to the raw material formula of this embodiment has a bulk density of 450kg / m 3 , the thermal conductivity is 0.12W / m·K, the compressive strength is 4.6MPa, and the sound insulation effect of the wall is 90 decibels. Its comprehensive performance is superior to similar products made with traditional technology and formula.

[0018] In the above technical solution, lime is the main material of air-entrained ...

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Abstract

The invention discloses an autoclaved aerated concrete building block. The autoclaved aerated concrete building block mainly comprises, by weight, 8-12% of cement, 18-22% of lime, 62-72% of fly ash, 0.8-2% of gypsum, 0.4-0.8% of aluminum powder paste and 0.8-1.2% of an additive. The lime has active calcium oxide content of 80-90wt%. The fly ash has silica content of 55-65wt%. The aluminum powder paste has activated aluminum content of 90-95%. The gypsum has calcium sulphate dihydrate content of 70-90wt%. The additive is Chinese honey locust powder or rape seed cake. The autoclaved aerated concrete building block has the advantages of optimization of a raw material ratio and improvement of autoclaved aerated concrete building block strength, sound absorption and sound insulation effect. The autoclaved aerated concrete building block has light weight and excellent effects of heat insulation and heat preservation.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an autoclaved aerated concrete block. Background technique [0002] Autoclaved aerated concrete block is a new light and porous wall material, which can be made into wall blocks, wall panels, floor slabs, roof panels, insulation boards and insulation pipes and other products. At present, autoclaved aerated concrete blocks have been widely used in industrial and civil buildings in my country. As load-bearing or non-load-bearing structural materials and enclosure insulation materials, they have become an important part of new wall materials. Most of the existing autoclaved aerated concrete blocks use fly ash as the main raw material, and are additionally equipped with raw materials such as cement, lime, water-based aluminum powder, gypsum, and waste oil. However, the autoclaved aerated concrete block produced by the existing production method has an unreasonable formula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/14
Inventor 陶安庆
Owner 陶安庆
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