Method for preparing green and environmentally-friendly building material from building wastes

A technology of construction waste and building materials, which is applied in the field of preparing green and environmentally friendly building materials, and can solve problems such as environmental pollution

Inactive Publication Date: 2019-08-06
广西理工职业技术学校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of this, the purpose of the present invention is to provide a kind of method that utilizes construction waste to prepare green environmental protection building material, obtain construction waste regenerated fine aggregate after pretreatment, and then with fly ash, diatomaceous earth, tea polyphenol, short Cut glass fiber and antifreeze, after a series of treatments, the building material obtained has the characteristics of high compressive strength, wear resistance, green environmental protection, low cost, etc., and can solve the environmental pollution problem caused by construction waste

Method used

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  • Method for preparing green and environmentally-friendly building material from building wastes

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Embodiment 1

[0027] This embodiment provides a method for preparing green building materials from construction waste, comprising the following steps:

[0028] (1) Construction waste pretreatment: use a magnetic separation device to remove metal substances in the construction waste, and use a disinfectant to spray and disinfect the construction waste; then put the construction waste into a mixer for stirring, and then slowly add dilute sulfuric acid into the construction waste mixture Acidification treatment, followed by primary crushing to obtain granular materials with a particle size of ≤60mm, put the granular materials into a rotary kiln and roast for 40 minutes, and then pass the roasted and cooled granular materials through secondary crushing and screening system to obtain granular materials. It is the granular material of 5mm, that is, the regenerated fine aggregate of construction waste, for subsequent use; wherein, the disinfectant solution is composed of the following raw materials...

Embodiment 2

[0033] This embodiment provides a method for preparing green building materials from construction waste, comprising the following steps:

[0034] (1) Construction waste pretreatment: use a magnetic separation device to remove metal substances in the construction waste, and use a disinfectant to spray and disinfect the construction waste; then put the construction waste into a mixer for stirring, and then slowly add dilute sulfuric acid into the construction waste mixture Acidification treatment, followed by primary crushing to obtain granular materials with a particle size of ≤60mm, put the granular materials into a rotary kiln and roast for 45 minutes, and then pass the roasted and cooled granular materials through secondary crushing and screening system to obtain granules It is the granular material of 8mm, that is, the regenerated fine aggregate of construction waste, for subsequent use; wherein, the disinfectant solution is made up of the following raw materials in parts by...

Embodiment 3

[0039] This embodiment provides a method for preparing green building materials from construction waste, comprising the following steps:

[0040] (1) Construction waste pretreatment: use a magnetic separation device to remove metal substances in the construction waste, and use a disinfectant to spray and disinfect the construction waste; then put the construction waste into a mixer for stirring, and then slowly add dilute sulfuric acid into the construction waste mixture Acidification treatment, followed by primary crushing to obtain granular materials with a particle size of ≤60mm, put the granular materials into a rotary kiln and roast for 50 minutes, and then pass the roasted and cooled granular materials through secondary crushing and screening system to obtain granular materials. It is the granular material of 12mm, that is, the regenerated fine aggregate of construction waste, for subsequent use; wherein, the disinfectant solution is made up of the following raw materials...

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Abstract

The invention provides a method for preparing a green and environmentally-friendly building material from building wastes, and relates to the technical field of building materials. The method comprises the following steps: (1) pretreatment of the building wastes, (2) mixing, (3) calcination, and (4) mixing. Building waste recycled fine aggregates are obtained after pretreatment, and are mixed withfly ash, diatomaceous earth, tea polyphenol, chopped glass fibers and an antifreeze agent, and the obtained mixture is subjected to a series of treatments to obtain the building material with the characteristics of high compressive strength, good wear resistance, greenness, environmental protection and low cost, etc. The method can solve the problem of environmental pollution caused by the building wastes.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of building materials, in particular to a method for preparing green and environment-friendly building materials from construction waste. [0003] 【Background technique】 [0004] Construction waste refers to the discharged materials that are useless or unnecessary to the building itself during the construction, maintenance, demolition and decoration of buildings and structures. With the acceleration of industrialization and urbanization, the construction industry is also developing rapidly at the same time, and the accompanying construction waste is increasing day by day. my country is the country with the largest amount of new construction in the world, with 2 billion new construction areas per year, consuming 53% of the world. 48% of cement, 48% of iron ore, and 47% of coal. The amount of construction waste has accounted for 30-40% of the total urban waste, and the comprehensive treatment utilizatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/02C04B20/02C04B20/04
CPCC04B20/023C04B20/04C04B30/02C04B2111/2092C04B2201/50C04B18/167C04B14/42C04B14/08C04B18/08C04B24/02C04B2103/601
Inventor 陈良刘良军冯泽
Owner 广西理工职业技术学校
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