Spherical large particle size recycled aggregate preparation device and method

Abstract

The invention relates to a spherical large particle size recycled aggregate preparation device and method. The spherical large particle size recycled aggregate preparation device comprises a sphericalaggregate processing device and a vibration table, wherein the processing device comprises an upper mold and a lower mold; hemispherical grooves are correspondingly formed in the upper mold and the lower mold; when the upper mold and the lower mold are fit, the respective hemispherical grooves are in one-to-one correspondence to form a spherical space; and a feeding port is formed in the upward side of the hemispherical groove of the upper mold. Corresponding amount of high-efficiency water reducing agent is added to waste concrete with known performances taken from concrete mixing stations and prefabricated factories to form recycled concrete; the recycled concrete is poured into a spherical aggregate processing device; and the recycled concrete in the spherical aggregate processing device is vibrated to become dense with the help of a vibrating table, and then is maintained to obtain spherical large particle size recycled aggregate. The spherical large particle size recycled aggregate is applied to the field of preparation of concrete-filled steel tubular columns. The device has the advantages of simple structure and convenient operation; and the prepared spherical large particle size recycled aggregate has small discreteness of physical property and mechanical property and relatively high safety.

Description

Technical field: [0001] The invention belongs to the technical field of construction, and in particular relates to a device and method for preparing recycled aggregate with spherical large particle size and its application in the field of steel pipe concrete member preparation. Background technique: [0002] Since 2011, the ready-mixed commercial concrete industry has been on the rise. Its unique environmental protection, "semi-finished products", quality stability, technological advancement, improved work efficiency, civilized and many other excellent features make ready-mixed concrete widely used in construction; and At the same time, prefabricated prefabricated structures similar to ready-mixed commercial concrete are known as a typical example of green construction due to their characteristics of land saving, energy saving, material saving, water saving and environmental protection, and prefabricated prefabricated construction is largely Guarantee and improve the quality...

AI Technical Summary

Problems solved by technology

In actual construction, when the construction interval of the construction site or the end of the construction, the mixer truck will have the remaining concrete to be transported back to the mixing station. In addition, various factors may be encountered during the transportation of the mixer truck (transportation machinery, road traffic conditions, Climate, etc.), the long delivery time makes the concrete unsuitable for continued use, and a large amount of concrete is transported back to the mixing station; there will also be a large amount of waste concrete in the production process of the prefabricated component factory

[0003] At present, the recycling process of waste concrete in concrete mixing plants and prefabricated component factories generally includes: (1) landfill waste concrete, which is expensive and runs counter to the concept of environmental protection; (2) separate and recycle waste concrete , the separated aggregate is used for reuse in concrete production, and the remaining waste slurry is dumped for precipitation. This method also fails to achieve the purpose of economy and environmental protection; (3) the waste concrete is separated and recycled, and the sand is transported back to the stockyard It is used as aggregate, and the cement waste slurry reaches a known and fixed concentration after passing through a special waste slurry concentration adjustment device, and is used in the production of concrete. This method has high technical requirements and is not conducive to the uniform application of all mixing stations.

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