Recycled aggregate screening pretreatment device and using method thereof

Abstract

The invention discloses a recycled aggregate screening pretreatment device and a using method thereof. The recycled aggregate screening pretreatment device comprises a machine body and is characterized in that a power space is formed in the machine body, a power mechanism used for providing power for the device is arranged in the power space, an air screening space is formed in the right side of the power space, and an air screening mechanism is arranged in the air screening space. By means of the recycled aggregate screening pretreatment device, recycled aggregate can be effectively screened, compared with traditional treatment, treatment liquid and the recycled aggregate can be mixed more evenly, the performance of the recycled aggregate is improved, and meanwhile, dust attached to the recycled aggregate can be effectively adsorbed and removed, so that the cleanliness of the recycled aggregate is greatly improved, the fusion degree of the treating fluid and the recycled aggregate is improved, meanwhile, small particles mixed in the recycled aggregate can be removed, and the strength effect of subsequent action with concrete is greatly improved.

Description

technical field [0001] The invention belongs to the related field of building materials, and in particular relates to a screening pretreatment device for recycled aggregates and a method for using the same. Background technique [0002] With the development of my country's urbanization process, the discharge of construction waste is increasing year by year, and the proportion of renewable components is also increasing. However, most of the construction waste is transported to the suburbs or around the city for simple landfill or open storage without any treatment, which not only wastes land and resources, but also pollutes the environment. On the other hand, with the increasing population, The demand for sand and gravel aggregates in the construction industry continues to grow, and the production and utilization of recycled aggregates from construction waste is of great significance for saving resources, protecting the environment and achieving sustainable development of the...

AI Technical Summary

Problems solved by technology

However, most of the construction waste is transported to the suburbs or around the city for simple landfill or open storage without any treatment, which not only wastes land and resources, but also pollutes the environment. On the other hand, with the increasing population, The demand for sand and gravel aggregates in the construction industry continues to grow, and the production and utilization of recycled aggregates from construction waste is of great significance for saving resources, protecting the environment and achieving sustainable development of the construction industry;

[0003] Aggregate prepared from waste concrete is called recycled aggregate, and recycled aggregate itself has large porosity, high water absorption, small packing density, large void ratio, and high crushing index. If it is directly applied to concrete, it will cause Freshly mixed recycled concrete has poor workability, large slump loss, low strength and poor durability after hardening, which greatly limits its application range;

[0004] The traditional pretreatment of recycled aggregates is to directly pour or spray pretreatment liquid to improve the performance of recycled aggregates, but it is impossible to achieve uniform pretreatment, and the quality of recycled aggregates cannot be guaranteed. At the same time, the dust mixed in recycled aggregates and There are many small particles that do not meet the particle size requirements, which seriously affect the mixing and use of recycled aggregates and treatment fluids

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