Non-autoclaved aerated brick based on industrial, agricultural and construction waste and preparation method thereof

A technology of construction waste and agricultural waste, which is applied in the field of construction materials, can solve the problems of improving the environment and economic value of construction waste, and the use of construction waste is not large, so as to achieve the effect of improving mechanical strength and heat preservation effect, reducing quality and improving performance

Active Publication Date: 2017-03-08
江西中态环保科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

Chinese patent CN 1597599A discloses a non-autoclaved air bubble concrete brick and its processing method. The brick is made of cement, fly ash, spun yarn, water, gypsum, and aluminum powder as the main raw materials, and then supplemented with sodium chloride and calcium chloride. , water reducing agent, sodium sulfate, soda, waterproofing agent and sulfane oil, after pouring, heating and curing at 40-60 ° C, steam or water curing to obtain autoclaved air bubble concrete bricks, the concrete brick surface prepared by this method is steamed Pressing process, but steam curing is still required
[0005] It can be known from the above prior art that construction waste can be used as aggregate in steam-free insulation bricks. First, only construction waste is recycled, and secondly, the amount of construction waste is not large, so it is difficult to greatly improve the environmental problems of construction waste. and economic value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) In terms of parts by mass, 1 part of concrete and 1 part of brick slag are crushed once, mixed with 0.2 parts of polystyrene foamed particles, and then crushed for the second time to obtain a mixed aggregate with a particle size of less than 5mm , heating and stirring at 40°C to obtain modified construction waste.

[0029] (2) In terms of parts by mass, 1 part of the sludge is dried and ground to form particles with a particle size of 0.05 mm, mixed with 0.5 part of straw ash, 0.4 part of rice ash and 0.5 part of bean dregs, and ground into powder again, Get modified agricultural waste.

[0030] (3) In terms of parts by mass, 1 part of fly ash, 0.3 part of mineral slag and 2 parts of pulp waste liquid are mixed to form industrial waste.

[0031] (4) In parts by mass, mix 20 parts of modified construction waste and 10 parts of modified agricultural waste, dry stir, then add 30 parts of cement, 5 parts of lime, 15 parts of industrial waste, 1 part of NF aliphatic wa...

Embodiment 2

[0033] (1) In terms of parts by mass, 1 part of concrete and 1.5 parts of brick slag are crushed once, mixed with 0.4 parts of polystyrene foamed particles, and then crushed for the second time to obtain a mixed aggregate with a particle size of less than 5mm , heated and stirred at 60°C to obtain modified construction waste.

[0034] (2) In terms of parts by mass, 1 part of the sludge is dried and ground to form particles with a particle size of 0.5 mm, mixed with 0.8 part of straw ash, 0.6 part of rice ash and 0.7 part of bean dregs, and ground into powder again, Get modified agricultural waste.

[0035] (3) In terms of parts by mass, 1 part of fly ash, 0.5 part of mineral slag and 3 parts of pulp waste liquid are mixed to form industrial waste.

[0036](4) In parts by mass, mix 40 parts of modified construction waste and 25 parts of modified agricultural waste, dry stir, then add 60 parts of cement, 10 parts of lime, 30 parts of industrial waste, 5 parts of NF aliphatic w...

Embodiment 3

[0038] (1) In terms of parts by mass, 1 part of concrete and 1.2 parts of brick slag are crushed once, mixed with 0.3 parts of polystyrene foamed particles, and then crushed for the second time to obtain a mixed aggregate with a particle size of less than 5mm , heating and stirring at 45°C to obtain modified construction waste.

[0039] (2) In terms of parts by mass, 1 part of the sludge is dried and ground to form particles with a particle size of 0.1 mm, mixed with 0.6 part of straw ash, 0.5 part of rice ash and 0.6 part of bean dregs, and ground into powder again, Get modified agricultural waste.

[0040] (3) In terms of parts by mass, 1 part of fly ash, 0.4 part of mineral slag and 2.5 parts of pulp waste liquid are mixed to form industrial waste.

[0041] (4) In parts by mass, mix 25 parts of modified construction waste and 15 parts of modified agricultural waste, dry stir, then add 40 parts of cement, 7 parts of lime, 25 parts of industrial waste, 3 parts of NF aliphat...

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Abstract

The invention discloses a non-autoclaved aerated brick based on industrial, agricultural and construction waste. A specific preparation method comprises the following steps of: mixing concrete and brick slag with polystyrene foaming particles, smashing twice and heating and stirring to obtain modified construction waste; drying and levigating sludge and mixing with straw ash, rice ash and soybean residue, and grinding to obtain modified agricultural waste; mixing the modified construction waste and the modified agricultural waste, and performing dry stirring; adding cement, lime, fly ash, mineral slag, paper pulp waste liquid, NF aliphatic water reducing agent, sodium carbonate, sodium bicarbonate and polypropylene fiber, and mixing; adding water and stirring; and pouring into a mould; and pressing, heating and maintaining to obtain a product. In the invention, the prepared non-autoclaved aerated brick based on industrial, agricultural and construction waste has good heat retaining property; through comprehensive utilization of multiple modified wastes, the non-autoclaved aerated brick has high economy and is green and environment-friendly.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a non-steaming aerated brick based on industrial, agricultural and construction waste and a preparation method. Background technique [0002] With the rapid development of urban construction, various construction wastes such as waste slag, broken bricks and tiles, waste concrete, scattered mortar, a small amount of steel, wood, glass, plastic and packaging materials have increased sharply. A large amount of land will destroy soil and water sources, and will pollute soil and water sources, which will have a greater impact on the ecological environment and social economy, which is not conducive to the sustainable development of the construction industry. [0003] The main components of construction waste are silicates, oxides, hydroxides, carbonates, sulfides, and sulfates. The chemical properties are relatively stable, and the hardness, wear resistance, toughness, fro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/08
CPCC04B28/00C04B2201/30C04B2201/32C04B2201/50C04B22/064C04B16/08C04B18/16C04B18/0418C04B18/101C04B18/24C04B18/08C04B18/04C04B2103/302C04B22/10C04B16/0633C04B38/0054C04B38/0074
Inventor 王文庆
Owner 江西中态环保科技有限公司
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