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Construction regenerated binding material prepared from construction garbage and preparation method thereof

A technology for recycling cementitious materials and construction waste, applied in cement production, etc., can solve problems such as environmental pollution, resource waste, and inability to realize construction waste recycling

Inactive Publication Date: 2012-05-02
云南华威废弃物资源化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the comprehensive recycling of construction waste at home and abroad is limited to particles with a particle size of 4.75 mm or more, small particles with a particle size of less than 4.75 mm, and powdery construction waste. Environmental pollution and waste of resources

Method used

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  • Construction regenerated binding material prepared from construction garbage and preparation method thereof
  • Construction regenerated binding material prepared from construction garbage and preparation method thereof
  • Construction regenerated binding material prepared from construction garbage and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] 1, the preparation method of the cementitious material for construction prepared with construction waste, each embodiment is shown in Table 1, and the concrete steps are as follows:

[0018] 1) Raw materials: pretreatment of construction waste, removal of sundries, retention of waste concrete, waste brick, waste sand ash, waste slag;

[0019] 2) Equipment: Model LGG03-II drum regenerator produced by Huazhong University of Science and Technology; LPM5A-150×2 air shock bag filter produced by Zhejiang Haining Jiehua Group Co., Ltd.;

[0020] 3) Crush and sieve waste concrete, waste brick, waste sand and ash, and waste slag to obtain particles with a particle size of less than or equal to 4.75mm;

[0021] 4) Put the particles obtained in step 3 into the drum regenerator for treatment, and the regeneration treatment makes the construction waste particles rub and collide with each other, remove the inert film on the sand particles, and activate the surface activity of the par...

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Abstract

The invention discloses a construction regenerated binding material prepared from construction garbage, prepared by the following steps: putting the construction garbage in a reclamation machine to rub, impact, activate, and modify, using a micro powder extraction device to obtain regenerated micro powder, adjusting the proportion. The invention also discloses a preparation method of the material, comprising the following steps: pretreating construction garbage, reserving waste concrete, waste bricks, waste lime-sand mortar, and waste slag as raw materials; crushing and sieving raw materials to obtain particles; putting the particles in the reclamation machine for processing, removing inert membranes on sand grains, and activating the surface activity of particles; extracting micro powder by a dust collector, sieving the micro powder, and taking undersized parts to obtain regenerated micro powder; continuously crushing the unextracted particles, and extracting the regenerated micro powder when crushing; examining, and adjusting the components to obtain the construction regenerated binding material, wherein, the particles in the reclamation machine are regenerated sand. The construction regenerated binding material is used for replacing 50-70 % of ordinary portland cement to be as masonry cement.

Description

technical field [0001] The invention relates to a building material and a preparation method thereof, in particular to a regenerated cementitious material for construction prepared by utilizing construction waste and a preparation method thereof. Background technique [0002] With the development of economy and the advancement of urbanization, the construction industry has developed by leaps and bounds, and the corresponding construction waste generated during the construction, maintenance and demolition of buildings is also increasing. According to statistics, the total amount of construction waste formed by the construction and demolition of old buildings in my country is as high as about 480 million tons each year. Construction wastes are mainly waste concrete, waste bricks, waste steel bars, etc., which can be recycled as secondary resources through sorting and crushing, but a large number of tiny powders will be generated during the construction process or during the c...

Claims

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Application Information

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IPC IPC(8): C04B7/24
CPCY02P40/10
Inventor 李如燕孙可伟文素芳张喜
Owner 云南华威废弃物资源化有限公司
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