Building waste processing process and application of recycled fine aggregates and recycled sand obtained by building waste processing process

A technology for recycling fine aggregate and construction waste, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of performance not meeting industry standards, low utilization rate of construction waste, low strength and low water absorption and other problems, to achieve the effect of less surface wrapping, good water permeability and uniform particle size distribution

Inactive Publication Date: 2018-09-25
广东怡兴食品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, different treatment methods are not adopted according to the different components of construction waste, and only simple treatment is carried out to obtain recycled aggregates with a wide particle size range. The recycled aggregates obtained after the treatment are covered by cement on the surface and the surface is rough. Its properties such as strength and water absorption are lower than those of natural aggregates. When it is used to prepare new building materials, its performance often fails to meet industry standards, and the utilization rate of construction waste is low.

Method used

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  • Building waste processing process and application of recycled fine aggregates and recycled sand obtained by building waste processing process

Examples

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Effect test

Embodiment 1

[0033] Such as figure 1 A construction waste treatment process is shown, which is used to separate, process and recycle mixed materials in construction waste, including the following steps:

[0034] (1) Pre-treat the construction waste and crush it to obtain a mixed material with a particle size below 150mm;

[0035] (2) Preliminarily screen the pretreated mixed material with a rolling sieve to separate the waste solid material and waste residue, and manually sort the waste solid material to remove fibers, plastics, broken glass, wires, steel bars and wood debris;

[0036] (3) The impurity-removed waste solid materials obtained in step (2) are sequentially crushed, magnetically separated, and screened to obtain primary materials with a particle size of 30 mm or more and secondary materials with a particle size of 30 mm or less;

[0037] (4) Repeat step (3) for the obtained primary materials until the obtained materials are all secondary materials with a particle size below 30...

Embodiment 2

[0054] An environmentally friendly permeable brick, the main components are recycled fine aggregate with a particle size of 1 to 5 mm and recycled sand with a particle size of 0.5 mm or less prepared in Example 1, and the mass components of the water seepage base are: recycled fine aggregate 40 parts of aggregate, 30 parts of recycled sand, 5 parts of fly ash, 15 parts of cement, 0.5 parts of water reducer, 13 parts of water; the mass components of the seepage surface layer are: 70 parts of recycled sand, 20 parts of cement, 7 parts of ash, 2 parts of mineral pigment, 0.5 part of water-permeable agent, 0.8 part of water-reducing agent, and 17 parts of water.

[0055] Its preparation process is as follows:

[0056] (1) Prepare cementitious base material and wet base material: Stir cement and water reducer evenly, add fly ash to mix to prepare cementitious base material; mix recycled fine aggregate and recycled sand evenly, add 3~ 5 parts water, mixed to make a wet base materia...

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Abstract

The invention discloses a building waste processing process and application of recycled fine aggregates and recycled sand obtained by the building waste processing process. The building waste processing process includes: preprocessing building waste, processing with a roller screen to obtain waste solid materials and waste muck, respectively processing the waste solid materials and the waste muckaccording to component difference to obtain the recycled fine aggregates with the particle size being 1-5mm and the recycled sand with the particle size being 0.5mm. The recycled materials obtained bythe processing process are few in surface attached objects and uniform in particle size distribution and therefore are good in performance such as water absorption and strength.

Description

technical field [0001] The invention belongs to the field of recycling treatment and reuse of construction waste, and in particular relates to a construction waste treatment process and the application of the obtained regenerated fine aggregate and regenerated sand. Background technique [0002] As one of the largest urban wastes, construction waste has become the focus of solving environmental pollution, reducing pollutant discharge rate, and improving resource utilization. With the process of urbanization in our country, construction waste is turning waste into treasure, which will belong to the key research and development project of waste recycling. Its recycling and recycling can not only protect the environment, but also reduce and reduce it if scientific and effective measures are adopted. Recycling can also save a lot of construction funds and resources. [0003] According to different components, construction waste can be roughly divided into waste solid materials ...

Claims

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Application Information

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IPC IPC(8): C04B18/16C04B20/02
CPCC04B18/16C04B20/02C04B20/026Y02W30/91
Inventor 沈小葵
Owner 广东怡兴食品有限公司
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