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Producing steam pressure brick by using construction garbage

A technology for construction waste and autoclaved fly ash bricks, which can be used in sustainable waste treatment, solid waste management, climate sustainability, etc., and can solve problems such as polluting the environment and destroying human landscapes.

Inactive Publication Date: 2007-09-26
李秋义 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to paying a large amount of land acquisition fees and transportation costs, it will also pollute the environment and destroy the cultural landscape

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Crushed concrete aggregate: 35%

[0011] Fly Ash: 35%

[0012] Lime: 12%

[0013] Admixture: 2%

[0014] Water: 16%

[0015] First, the construction waste is manually sorted, and then crushed into aggregates with a particle size of less than 8mm. The batching is carried out according to the above-mentioned mixing ratio. After the materials are wheel-milled and stirred, they are subjected to high-pressure molding (the pressure is 25MPa) to make standard bricks of 240mm×15mm×53mm. Put the bricks in the autoclave, use 0.8MPa steam at constant pressure for 6 hours, cool down naturally and leave the autoclave to get the finished product.

Embodiment 2

[0017] Broken brick, waste mortar aggregate: 30%

[0018] Fly Ash: 36%

[0019] Lime: 13%

[0020] Admixture: 3%

[0021] Water: 18%

[0022] First, the construction waste is manually sorted, and then crushed into aggregates with a particle size of less than 5mm. The batching is carried out according to the above-mentioned mixing ratio. After the materials are wheel-milled and stirred, they are subjected to high-pressure molding (the pressure is 25MPa) to make standard bricks of 240mm×15mm×53mm. Put the bricks in the autoclave, use 0.8MPa steam at constant pressure for 6 hours, cool down naturally and leave the autoclave to get the finished product.

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PUM

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Abstract

The invention discloses an autoclave test powder coal ash garbage brick with building garbage, which comprises the following steps: choosing building garbage, powder coal ash, lime (or carbide slag) and additive as main raw material; bruising building garbage (waste concrete, sand pulp, brick, tile and stone) to continuous grading particle with particle size smaller than 10mm; using as skeletal material of autoclave fly ash bricks; using powder coal ash and lime material as cementing agent; adopting hydrothermal synthesis craft; making usage of building garbage at 15%-55% and optimum range at 20%-35%. The hydrothermal synthesis craft is placing the product in the saturated steam with temperature higher 100 deg.c.

Description

technical field [0001] The invention relates to a technology for producing autoclaved fly ash bricks, in particular to a technology for producing autoclaved fly ash bricks by using construction waste. Background technique [0002] With the advancement of the urbanization process across the country, the construction waste brought by the renovation of old houses, building demolition, reconstruction and expansion projects in urban construction has become a very headache for the construction departments and urban management departments in various places. In addition to paying a large amount of land acquisition fees and transportation fees, it will also pollute the environment and destroy the cultural landscape. As a new type of pollution source, construction waste is being paid more and more attention to its treatment. In addition, the rapid development of industry has also brought about the deterioration of the urban environment. How to effectively control pollution sources su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/16C04B18/08
CPCC04B28/18Y02W30/91C04B18/08C04B18/167C04B20/0076C04B40/0057C04B40/024C04B40/0259
Inventor 李秋义张纪刚朱亚光
Owner 李秋义
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