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Mixture and method for controlling cracking of sludge solidified soil

A technology of mixture and solidified soil, which is applied in the field of mixture to control the cracking of silt-solidified soil, which can solve the problems affecting the physical and mechanical properties and overall impermeability of silt-solidified soil, so as to achieve resource utilization, improve tensile performance, and solve cracking problem effect

Inactive Publication Date: 2020-10-30
POWERCHINA HUADONG ENG COPORATION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, since the conventional solidification materials are mainly silicate materials such as cement, shrinkage and cracking problems inevitably occur during the hydration process, which affects the physical and mechanical properties and overall resistance of the sludge-solidified soil in the process of resource utilization. Permeability

Method used

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Examples

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Embodiment Construction

[0013] This embodiment is a method for controlling the cracking of silt-solidified soil. The method adds a mixture of fiber material (this example adopts polypropylene mesh fiber), fly ash portland cement and fly ash to the silt, and mixes Stir well. The silt-solidified soil is composed of silt, fly ash, fly ash Portland cement, and polypropylene mesh fiber in a certain proportion. The components are calculated according to the weight ratio: silt: fly ash Portland cement: fly ash: =1000:20~50:100~300:0.2~0.8.

[0014] In this embodiment, fly ash Portland cement, fly ash and polypropylene mesh fibers are mixed uniformly in a certain proportion to form a mixture, and then the mixture is added in a certain proportion to the sludge and mixed and stirred.

[0015] The main principle of silt solidified soil is that cement produces hydration reaction, forms cementation and filling structure, converts free water in silt into bound water, and wraps and cements mineral particles in sil...

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Abstract

The invention relates to a mixture and a method for controlling cracking of sludge solidified soil. The invention aims to provide the mixture and the method for controlling cracking of the sludge solidified soil so as to reduce cracks in a sludge solidification process and improve indexes such as physical and mechanical properties, impermeability and the like of the sludge solidified soil. According to the technical scheme, the mixture for controlling cracking of the sludge solidified soil is characterized by comprising Portland fly ash cement, fly ash and a fiber material. The method is suitable for the technical field of resource environmental protection.

Description

technical field [0001] The invention relates to a mixture and a method for controlling cracking of silt-solidified soil. It is applicable to the technical field of resource and environment protection. Background technique [0002] Endogenous pollutants need to be controlled and removed in water environment treatment, and sediment dredging is a common engineering technique for removing endogenous pollutants. However, if a large amount of dredged silt cannot be safely disposed of, it will occupy a large amount of valuable land resources for stacking, and without certain stabilization treatment, the pollutants in the sediment will be released into the soil and groundwater again, causing secondary pollution and other problems. . [0003] At present, the use of solidification / stabilization (referred to as solidification) technology to convert dredged silt into earthwork materials that can be used as renewable resources can not only solve the problem of a large amount of dredged...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00775
Inventor 沈世龙刘畅快刘剑平洪思远魏亚云
Owner POWERCHINA HUADONG ENG COPORATION LTD
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