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Production technology for preparing recycled aggregate from waste concrete

A technology for waste concrete and waste concrete blocks, which can be used in solid waste management, sustainable waste treatment, climate sustainability, etc.

Active Publication Date: 2019-12-13
ZHEJIANG YUEDA TRAFFIC ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the transformation of the city, a large number of abandoned buildings in the city have formed construction waste. The disposal of these construction waste not only requires a large area of ​​storage yard, but also costs a lot of manpower and material resources.

Method used

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  • Production technology for preparing recycled aggregate from waste concrete
  • Production technology for preparing recycled aggregate from waste concrete
  • Production technology for preparing recycled aggregate from waste concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] refer to figure 1 , the invention discloses a production process for preparing recycled aggregate from waste concrete, comprising the following preparation process:

[0089] S1: Pretreatment: First, spray wet treatment and anti-epidemic treatment on the waste concrete blocks, and then hammer the waste concrete blocks so that the diameter of the hammered concrete blocks is less than 50mm;

[0090] S2: screening treatment, including the following process steps:

[0091] a. Manually sort out the larger metal, rubber, plastic, wood and other garbage from the waste concrete blocks after S1 pretreatment;

[0092] b. Transport the waste concrete blocks after primary selection to the vibrating sieve, and the vibrating sieve will screen out the dust with particles smaller than 5mm;

[0093] c. Put the screened discarded concrete blocks into the clean water pool, and use ultrasonic cleaning for 30 minutes. After cleaning, let it stand for 30 minutes to remove the suspended matt...

Embodiment 1

[0120] The difference between embodiment 10-13 and embodiment 1 is that the bacterial content of the bacterial solution is as shown in the following table:

[0121] Example Example 10 Example 11 Example 12 Example 13 Bacteria content 50％ 55％ 65％ 70％

[0122] The difference between Embodiment 14-17 and Embodiment 1 is that the first auxiliary agent includes the following raw materials in weight percentage:

[0123]

[0124]

[0125] The difference between Embodiment 18-21 and Embodiment 1 is that the second auxiliary agent includes the following raw materials in weight percentage:

[0126]

[0127] The difference between embodiment 22-25 and embodiment 1 is that CO 2 The throughput is shown in the table below:

[0128] Example Example 22 Example 23 Example 24 Example 25 Throughput / (m 3 / h)

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Abstract

The invention relates to a production technology for preparing recycled aggregate from waste concrete. The technology comprises the following steps: S1, preprocessing: carrying out jet wetting and epidemic prevention treatment on waste concrete blocks, and then hammering the waste concrete blocks to make the diameter of the hammered concrete blocks less than 50 mm; S2, screening: screening the preprocessed material obtained in step S1; S3, crushing: crushing the screened waste concrete blocks obtained in step S2 to prepare recycled aggregate; S4, reinforcing: reinforcing the recycled aggregateobtained in step S3; and S5, conveying the reinforced recycled aggregate to a storage bin for storage. The recycled aggregate is prepared by preprocessing, screening, crushing, reinforcing, drying and collecting the waste concrete, so that the effective utilization of the waste concrete is realized, the waste of resources is reduced, and the utilization rate of energy is increased.

Description

technical field [0001] The invention relates to the technical field of the preparation of recycled aggregates, in particular to a production process for preparing recycled aggregates from waste concrete. Background technique [0002] With the development of society, there are more and more buildings and construction projects. Concrete components are widely used in columns and foundation piles of tower structures, industrial plants and civil buildings. With the transformation of the city, a large number of abandoned buildings in the city have formed construction waste. The disposal of these construction waste not only requires a large area of ​​storage yard, but also costs a lot of manpower and material resources. With the development of construction science, effective utilization of construction waste has become a new topic. Contents of the invention [0003] The purpose of the present invention is to provide a production process for preparing recycled aggregate from wast...

Claims

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Application Information

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IPC IPC(8): C04B20/12C04B20/02C04B18/16C04B28/26C04B28/00
CPCC04B20/026C04B20/12C04B28/00C04B28/26C04B2111/00482C04B20/023C04B18/16C04B2103/0001C04B14/06C04B14/28C04B24/2623C04B2103/408C04B2103/0068C04B18/08C04B14/4643C04B2103/302Y02W30/91
Inventor 朱晓德刘天印潘金辉
Owner ZHEJIANG YUEDA TRAFFIC ENG CO LTD
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