Device and method for recycling recycled aggregate from waste concrete

By designing a device for separation and grinding, the problem of unfixed proportions of coarse aggregate and fine aggregate in waste concrete is solved, and the efficient filling performance and compactness of concrete are achieved.

CN120190200AActive Publication Date: 2025-06-24CHINA RAILWAY 14TH BUREAU GRP NO 3 ENG CO LTD +1
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Patent Information

Application Number
CN202510071158.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-16
Publication Date
2025-06-24
Estimated Expiration
2045-01-16

AI Technical Summary

Technical Problem

During the recycling of recycled aggregates from waste concrete, the ratio of coarse aggregate to fine aggregate is not fixed, resulting in a decrease in the compactness of the concrete or a weakening of the filling performance.

Method used

A device is designed, including a screening device and a control device, which separates the coarse aggregate from the fine aggregate through the screening device, and re-grinses the fine aggregate using a curved plate and a grinding head to make its particle size smaller, thereby achieving a tight mixing of the coarse aggregate and the fine aggregate.

Benefits of technology

By adjusting the ratio of coarse aggregate and fine aggregate, the filling performance of concrete is improved, and the density and structural stability of concrete are enhanced.

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Abstract

The invention provides a device and a method for recycling recycled aggregate from waste concrete, and relates to the field of concrete treatment. According to the device and method for recycling the recycled aggregate from the waste concrete, a support and a material barrel installed on the support are included, a screening device used for screening the aggregate is fixedly installed at the upper end of the material barrel, a telescopic pipe is rotatably installed at a discharging opening of the screening device, and a control device used for controlling the angle and the position of the telescopic pipe is installed in the material barrel; according to the device and method for recycling the recycled aggregate from the waste concrete, coarse aggregate and fine aggregate with the small particle size can be separated, through the arc-shaped plate and the grinding head, the fine aggregate can be conveyed and ground again, the particle size of the fine aggregate is smaller, the coarse aggregate and the fine aggregate are tightly attached, and the recycling effect of the recycled aggregate is improved. When the amount of small fine aggregate is insufficient, the coarse aggregate can be discharged to the arc-shaped plate and is continuously ground into the fine aggregate, so that the filling performance of the concrete is improved.
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