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A method of preparing slope protection bricks by using thermal desorption repaired soil and its products

A technology of thermal desorption and slope protection bricks, applied in the direction of coastline protection, etc., to achieve the effect of strengthening the compressive strength and reducing the cost of raw materials

Active Publication Date: 2021-05-14
ZHONGKE DINGSHI ENVIRONMENTAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a method for preparing ecological interlocking slope protection bricks using organic polluted soil repaired by thermal desorption as a raw material for the resource utilization of organic pollution repaired soil in current environmental governance and its products

Method used

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  • A method of preparing slope protection bricks by using thermal desorption repaired soil and its products

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation of embodiment 1 ecological interlocking slope protection brick

[0024] 1. Soil source

[0025] The soil is the original cyanide-contaminated soil repaired by physical thermal analysis technology, and the specific method is carried out according to the method disclosed in the patent application No. 201510796456.8.

[0026] 2. Preparation of ecological interlocking slope protection bricks

[0027] (1) Use a transport vehicle to transport the dried raw soil after thermal desorption repair to the factory area, and use a screening machine to screen out raw soil with a particle size of 2mm-4mm; use a screening machine to screen out 3mm and 5mm particle sizes respectively The stones are mixed according to the weight ratio of 1:1;

[0028] (2) Evenly mix the soil, stones, α-gypsum and a part of tap water after thermal desorption restoration, and then add Portland cement P.O 42.5, polycarboxylate water reducing agent and high-strength and high-modulus PVA fibe...

Embodiment 2

[0032] The preparation of embodiment 2 ecological interlocking slope protection bricks

[0033] 1. Soil source

[0034] The soil is the original cyanide-contaminated soil repaired by physical thermal analysis technology, and the specific method is carried out according to the method disclosed in the patent application No. 201510796456.8.

[0035] 2. Preparation of ecological interlocking slope protection bricks

[0036] (1) Use a transport vehicle to transport the dried raw soil after thermal desorption repair to the factory area, and use a sieving machine to sieve out the raw soil with a particle size of 3mm-5mm; use a sieving machine to sieve out stones with a particle size of 4mm;

[0037] (2) Evenly mix the soil, stones, α-gypsum and a part of tap water after thermal desorption restoration, and then add Portland cement P.O 42.5, polycarboxylate water reducing agent and high-strength and high-modulus PVA fiber (length 5~ 10mm) and another part of tap water, wherein the ma...

Embodiment 3

[0041] The preparation of embodiment 3 ecological interlocking slope protection bricks

[0042] 1. Soil source

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Abstract

The invention discloses a method and a product thereof for preparing slope protection bricks from soil repaired by thermal desorption. The method includes: (1) uniformly mixing the soil after thermal desorption restoration, stones, α-gypsum and a part of tap water, then adding cement, polycarboxylate water reducing agent and biomass fiber and another part of tap water, and mixing The raw materials are uniformly stirred, the mass ratio of cement, soil repaired by thermal desorption, stones and water is 1:(2~2.5):1:0.35, α gypsum, polycarboxylate water reducing agent and biomass fiber, among others The addition amount is 1 / 20~1 / 30, 1 / 1000, and 1 / 2000 of the cement addition amount; (2) Put the above mixed raw materials into the brick making machine, vibrate and shape, and obtain an ecological chain type after maintenance and performance testing. Slope protection brick. The use of remediation soil to prepare ecological interlocking slope protection bricks can solve the problem of absorbing a large amount of remediation soil produced in the process of thermal desorption restoration, and at the same time reduce the cost of raw materials in the process of producing slope protection bricks, which embodies the concept of soil resource utilization after restoration.

Description

technical field [0001] The invention relates to a method for preparing slope protection bricks and its products, in particular to a method for preparing slope protection bricks from soil repaired by thermal desorption and its products. The invention belongs to the technical field of industrial production. Background technique [0002] Organic pollution is the pollution type of major industrial polluted sites in the Beijing-Tianjin-Hebei region. Thermal desorption technology is one of the main technologies for the remediation of organically polluted sites in China. Taking the contaminated site remediation project of Beijing Coking Plant as an example, the earthwork processing volume of the entire contaminated site remediation project is 2.13 million m 3 . Therefore, the utilization of soil resources after thermal desorption remediation is of great significance to solve the problem of soil consumption after remediation. [0003] However, at present, the recovery path of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04E02B3/14
CPCC04B28/04E02B3/14C04B22/143C04B2103/302C04B16/0641C04B14/361C04B14/02
Inventor 黄海尹立普杨勇张文牛静陈美平张博王海东屈智慧
Owner ZHONGKE DINGSHI ENVIRONMENTAL ENG CO LTD