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Production process for manufacturing high-strength recycled aggregates from construction waste

A technology of construction waste and recycled aggregate, which is applied in the direction of solid waste management, sustainable waste treatment, and separation of solids from solids with airflow, which can solve the problems of high water absorption and low strength of recycled aggregates, and achieve improved Performance and quality, reduction of debris content, effect of repairing cracks

Inactive Publication Date: 2018-10-16
赵素军
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  • Summary
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AI Technical Summary

Problems solved by technology

[0003] Since the surface of the recycled aggregate is covered with a considerable amount of hardened cement mortar, and the recycled aggregate produces a large number of fine cracks during the crushing process, resulting in low strength and high water absorption of the recycled aggregate, making it intelligently applied to some strength Therefore, in order to solve the above problems, it is necessary to develop a production process for making high-strength recycled aggregates from construction waste.

Method used

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Embodiment Construction

[0026] The technical solutions of the present invention will be further specifically described below through examples.

[0027] A production process for making high-strength recycled aggregates from construction waste, comprising the following steps:

[0028] A. Pretreatment: Firstly, the construction waste is subjected to moisture spraying treatment and epidemic prevention pretreatment;

[0029] B. Screening: a. Set up a sorting station next to the feeding conveyor belt, and manually sort out metal, rubber, plastic, wood and other garbage with a large volume (size greater than 15cm);

[0030] b. Dry the artificially selected construction waste through a drying device to facilitate subsequent screening

[0031] c. Transport the construction waste that has been preliminarily selected through the above steps to the vibrating screen, and the vibrating screen will screen out the dust with particles smaller than 5mm;

[0032] d. The construction waste screened in step c is transp...

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PUM

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Abstract

The invention discloses a production process for manufacturing high-strength recycled aggregates from construction waste. By multistage screening, impurities in the construction waste are removed specifically to effectively reduce the content of the impurities in the construction waste, and high-strength clean recycled aggregates can be obtained. By chemical slurry infiltration and cement wrapping, owing to specific properties of added chemical substances, crack repairing and pore filling of the recycled aggregates are realized while interface adhesiveness is improved, and performances and quality of the recycled aggregates are remarkably improved. In conclusion, the production process has advantages of multistage screening, reasonability in arrangement and high strength and performances of products.

Description

technical field [0001] The invention belongs to the field of construction waste treatment, and in particular relates to a production process for making high-strength recycled aggregates from construction waste. Background technique [0002] With the rapid development of my country's economy, there are countless construction wastes produced by the demolition of old buildings every year in the country. Building energy conservation is imperative, and it is also an important part of sustainable economic development. Recycling of construction solid waste Utilization not only achieves the purpose of energy saving, but also helps to protect the environment and maintain the natural ecological balance. Therefore, it is a good and effective means to use construction waste to manufacture recycled aggregates for construction for resource reuse. [0003] Since the surface of the recycled aggregate is covered with a considerable amount of hardened cement mortar, and the recycled aggregate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B20/02C04B18/16C04B20/12B07B9/00B03C1/30
CPCB03C1/30B07B9/00C04B18/16C04B20/02C04B20/026C04B20/12C04B20/1033C04B20/1077Y02W30/91
Inventor 赵素军
Owner 赵素军
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