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Aerated concrete block employing blast furnace slag as raw material and preparation method

A technology of aerated concrete and blast furnace slag, applied in the field of building materials, can solve the problems of single material source, large drying shrinkage value, poor heat insulation, etc. Effect

Inactive Publication Date: 2015-04-01
葛艳珍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a new type of wall material, air-entrained concrete is a low-energy, environmentally-friendly new building material, which belongs to the building materials promoted by the state. However, because ordinary air-entrained concrete is made of cement, fly ash, quicklime, gypsum, etc. Large shrinkage value, low strength, water seepage, non-corrosion resistance, poor heat insulation, single source of material, etc. Therefore, further research on aerated concrete block technology is urgently needed to further meet market requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The aerated concrete block with blast furnace slag as raw material is characterized in that it is made of the following raw materials in parts by weight (kg): cement 18, quicklime 12, gypsum 20, aluminum powder 0.2, rice husk powder 30, ammonium dihydrogen phosphate 4 , clay 10, blast furnace slag 35, calcium formate 8, iron sulfate 3, sodium persulfate 4, oil foot 8, urea 5, antioxidant 1010 1.

[0014] The aerated concrete block made of blast furnace slag as raw material is characterized in that it comprises the following steps:

[0015] (1) Add appropriate amount of water to rice husk powder and calcium formate, heat to 60-70°C, stir for 15-30 minutes, add oil foot, clay, ammonium dihydrogen phosphate, stir for 15-25 minutes, then add sodium persulfate , after stirring for 30-45 minutes, add urea and gypsum and stir for 20-30 minutes, and stir into mud;

[0016] (2) Add cement to 80-90°C hot water and mix for 10-15 minutes, then add the mud obtained in step (1), qui...

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PUM

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Abstract

Provided is an aerated concrete block employing blast furnace slag as raw material. The aerated concrete block is prepared from the following raw materials comprising, by weight, 18-25 parts of cement, 12-15 parts of quicklime, 15-20 parts of gypsum, 0.2-0.3 parts of aluminium powder, 30-35 parts of rice hull powder, 4-6 parts of ammonium dihydrogen phosphate, 10-15 parts of clay, 30-35 parts of blast furnace slag, 8-10 parts of calcium formate, 3-5 parts of ferric sulfate, 3-4 parts of sodium persulfate, 5-8 parts of oil foot, 3-5 parts of urea and 1-2 parts of anti-oxidants. The aerated concrete block employs blast furnace slag as a raw material, reduces the cost of raw materials greatly, makes use of wastes, makes the best of resources and protects the environment.

Description

technical field [0001] The invention belongs to a building material technology, in particular to a concrete block and a preparation method thereof. Background technique [0002] As a new type of wall material, air-entrained concrete is a low-energy, environmentally-friendly new building material, which belongs to the building materials promoted by the state. However, because ordinary air-entrained concrete is made of cement, fly ash, quicklime, gypsum, etc. Large shrinkage value, low strength, water seepage, no corrosion resistance, poor heat insulation, single source of material, etc. Therefore, further research on aerated concrete block technology is urgently needed to further meet market requirements. Contents of the invention [0003] The object of the present invention is to provide aerated concrete block with blast furnace slag as raw material and its preparation method, which expands the application range of blast furnace slag, can turn waste into wealth and protect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/02C04B28/14
Inventor 吴福贵
Owner 葛艳珍