Recycled fine aggregate self-compacting concrete preparation system and preparation method

Abstract

The invention relates to a recycled fine aggregate self-compacting concrete preparation system and method. The recycled fine aggregate self-compacting concrete preparation system comprises a preparation box, an end cover, a first-stage crushing mechanism, a second-stage crushing mechanism and a screening mechanism, and a filter plate is arranged between the first-stage crushing mechanism and the second-stage crushing mechanism; according to the secondary crushing mechanism, fine aggregate generated in the building aggregate after primary crushing can be screened out in the falling process, so that the workload of the secondary crushing mechanism is reduced, the secondary crushing mechanism can effectively crush and grind the building aggregate, and the situation that large particles exist in the fine aggregate is avoided; and meanwhile, the adopted screening frame and the screening box are in a drawing type, so that the screening box after screening is convenient to take out.

Description

technical field [0001] The invention relates to the technical field of regenerated fine aggregate preparation, in particular to a regenerated fine aggregate self-compacting concrete preparation system and preparation method. Background technique [0002] With the rapid development of economy and society, some old buildings need to be demolished and remodeled, which will generate a large amount of construction waste. There are many building aggregates that can be recycled in these construction wastes. These building aggregates are mostly made of concrete. It is made of waste building aggregates, which are crushed, cleaned, and classified to produce fine aggregates, and then the fine aggregates are mixed with other raw materials in a certain proportion, so as to partially or completely replace natural aggregates such as sand and gravel (mainly It is coarse aggregate), and then add cement, water, etc. to form self-compacting concrete, which brings certain help to environmental ...

AI Technical Summary

Problems solved by technology

[0004] 1. When the traditional building aggregate is broken, the building aggregate after the primary crushing is directly sent to the secondary crushing mechanism for crushing, but the fine aggregate produced by the primary crushing aggregate cannot be filtered in time As a result, the workload of the secondary crushing mechanism increases, which makes it difficult to completely and effectively crush the input building aggregates during the secondary crushing, resulting in the presence of large particles in the prepared fine aggregates. phenomenon, resulting in poor fine aggregate subsequent mixing effect;

[0005] 2. The screening mechanism for fine aggregate is mostly disassembled and installed between the screening box and the screening frame, which makes it inconvenient to take out the screening box after screening.

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