Preparation device and preparation method of microbial mineralization reinforced recycled aggregate

A technology for recycled aggregates and preparation devices, applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc., to achieve the effects of avoiding waste, enhancing sedimentation, reducing water absorption and crushing index values
CN111153618AActive Publication Date: 2020-05-15SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2020-05-15

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Abstract

The invention discloses a preparation device and a preparation method of a microbial mineralization reinforced recycled aggregate. The device comprises a sealable box containing a microorganism / calcium ion mixed culture solution, a supporting frame is arranged in the box, a tray for bearing recycled aggregate is placed on the supporting frame, a hole is formed in the bottom of the tray, the hole diameter is smaller than the particle diameter of the recycled aggregate, the bottom surface of the tray is higher than the liquid level of the mixed culture solution; a spraying pipeline and a spray head are arranged above the tray, a water inlet of the spraying pipeline is connected with the mixed culture solution through a water suction pump; the device further comprises a gas cylinder which iscommunicated with the interior of the box and filled with curing gas. The water suction pump is started, the mixed culture solution can enter the spraying pipeline and is sprayed out from the spray head to spray the recycled aggregate, the redundant mixed culture solution after spraying can flow into the bottom of the box from the holes in the bottom of the tray and then is recycled; meanwhile, spraying and curing can be carried out at the same time, and the problems that carbon source supply is insufficient in the spraying process and microorganism supply is insufficient in the curing processwhen spraying and curing are carried out step by step are effectively solved.
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Description

technical field

[0001] The invention relates to a strengthening device and method of recycled aggregate, in particular to a preparation device and method of microbial mineralization strengthened recycled aggregate, which belongs to the cross technical field of microbiology and solid waste resource utilization. Background technique

[0002] In recent years, with the acceleration of my country's urbanization process, the generation of construction waste aggregates is also increasing year by year. Compared with natural aggregates, the performance of recycled aggregates is very different, such as: high porosity, high water absorption, high crushing index, etc., which limits the reuse of recycled aggregates in engineering structures. Strengthen the performance of recycled aggregate through a series of aggregate strengthening technologies, so that its performance can meet the requirements of engineering applications and be reapplied to actual projects. This can not only alleviate ...

Claims

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