A concrete waste recycling system

A concrete waste and waste technology, which is applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc., can solve the problem of restricting the promotion and popularization of concrete waste recycling and reuse, low impermeability of new concrete, and the use of To solve problems such as limited fields, achieve the effect of promoting popularization of use, reducing transportation burden, and expanding the scope of use

Active Publication Date: 2022-01-25
华恒建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, because there are a large number of capillary channels or capillary holes in the surface of recycled concrete aggregate particles, the strength of recycled concrete aggregate is worse than that of fresh aggregate. The strength of the body is poor, and the new concrete made of recycled concrete aggregates has low impermeability, so the new concrete made of recycled concrete aggregates can only be used when the strength requirements are low and the impermeability requirements are low. The limited field of use greatly limits the promotion and popularization of the recycling and reuse of concrete waste

Method used

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  • A concrete waste recycling system
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Experimental program
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Embodiment 1

[0068] as attached figure 1 As shown, a concrete waste recycling system includes the following units arranged in order of flow: waste crushing unit 1, drying unit 2, first sorting unit 3, sealing unit 4, drying unit 5 and second Sorting unit 6.

[0069] as attached figure 2 As shown, in the waste crushing unit 1, the concrete waste is crushed to a particle size of less than 10 cm to obtain waste aggregates. The crushing in the waste crushing unit 1 can be determined according to the actual situation. For example, if the site condition of the recycling system is a construction site or a commercial concrete station, the amount of concrete waste, etc., it can be crushed manually using tools such as jacks and electric hammers, or There are mechanical equipment such as concrete crusher 11 (also known as jaw crusher) for crushing. In this embodiment, the present invention is described systematically, and concrete crusher 11 is used as an example.

[0070] The waste aggregates cr...

Embodiment 2

[0096] as attached Figure 8 As shown, a concrete waste recycling system is based on the first embodiment, the difference is that it also includes a residual alkali removal unit 7, and the process of the residual alkali removal unit 7 is located between the waste crushing unit 1 and the drying unit 2 During this period, the residual alkali unit 7 is used as the next process unit of the waste crushing unit 1, and the residual alkali unit 7 is used as the previous process unit of the drying unit 2.

[0097] as attached Figure 9 As shown, the residual alkali removal unit 7 includes a soaking tank 71 and a water supply pump 72 . The immersion pool 71 includes a third pool body 711. The immersion pool 71 is also connected with a sewage pipe 712 at the bottom of the third pool body 711. The sewage pipe 712 is also provided with a controllable sewage valve outside the third pool body 711. 7121. The water supply pump 72 is controllable to open and close, and its water inlet is com...

Embodiment 3

[0103] as attached Figure 10 As shown, a concrete waste recycling system is based on the second embodiment, the difference is that it also includes an aging unit 8 . The process of the aging unit 8 is located between the sealing unit 4 and the drying unit 5 , the aging unit 8 is the next process unit of the sealing unit 4 , and the aging unit 8 is the previous process unit of the drying unit 5 .

[0104] as attached Figure 11 As shown, the aging unit 8 includes an aging room 81, which can be a stacking area, a pool body or a warehouse, and the pool body is selected here. The number of aging chambers 81 is determined according to the actual situation, and the number of aging chambers 81 is at least the number of intervals of particle diameters sorted by the first sorting unit 3, where the number of aging chambers 81 is three.

[0105] as attached Figure 10 As shown, the plugged aggregates are picked up and stacked in the aging chamber 81 after being soaked or soaked in th...

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Abstract

The invention relates to the field of construction waste recycling, and discloses a concrete waste recycling system, which includes the following units arranged in sequence according to the flow sequence: a waste crushing unit, which crushes concrete waste to obtain waste aggregates; a drying unit, which dries and removes The free water in the waste aggregates is used to obtain dry waste aggregates; the first sorting unit sorts the dry waste aggregates according to different particle sizes; the sealing unit uses the treatment liquid to soak or infiltrate the dry waste aggregates for 1.5‑ 4h to obtain the sealing aggregate, the treatment solution is an aqueous solution of soluble iron salt, soluble copper salt or soluble magnesium salt; the drying unit dries the sealing waste aggregate to obtain dry sealing aggregate; the second sorting unit The materials are sorted according to different particle sizes to obtain usable recycled concrete aggregates. Using the recycled concrete aggregates produced by this system, the impermeability and strength of concrete are stronger than those of the existing technology, which increases the scope of use of recycled concrete aggregates. , Promote the popularization of the use of recycled aggregates in concrete.

Description

technical field [0001] The invention relates to the field of construction waste recycling, in particular to a concrete waste recycling system. Background technique [0002] Concrete or concrete reinforced structure is a common building structure in current construction projects. It appears frequently and is mainly used as the main structure of the building. Compared with structures made of other materials, concrete structures have good integrity, good moldability, and good durability. , Good fire resistance, and low cost of construction and maintenance. However, in the process of building demolition or reconstruction, compared with the more convenient recycling methods of wood materials and metal materials, the field of concrete recycling in concrete structures is small, and recycling is difficult, resulting in a large amount of construction waste or construction waste. [0003] The recycling of concrete waste is one of the major directions of green environmental protection...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B18/16C04B20/02
CPCC04B18/167C04B20/026C04B20/02Y02W30/91
Inventor 陈文杰虞靖彬
Owner 华恒建设集团有限公司
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