Electrified core shell nanomaterial and application thereof in electroosmosis consolidation soft soil

A core-shell nanomaterial and nanotechnology, applied in the fields of electrochemistry and electroosmosis, can solve problems such as unsatisfactory soil reinforcement effect and low permeability, and achieve the effects of accelerating electroosmotic drainage speed, enhancing strength, and improving drainage efficiency.

Inactive Publication Date: 2017-05-31
WUHAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low permeability of silty soft clay, the conventional drainage consolidation method will last for a long time when dealing with this type of soil, and the soil reinforcement effect is sometimes not ideal

Method used

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  • Electrified core shell nanomaterial and application thereof in electroosmosis consolidation soft soil
  • Electrified core shell nanomaterial and application thereof in electroosmosis consolidation soft soil
  • Electrified core shell nanomaterial and application thereof in electroosmosis consolidation soft soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] see Figure 1-3 , a charged core-shell nanomaterial, in an embodiment of the present invention, a charged core-shell nanomaterial is used, wherein the positively charged metal oxide is nano-Fe 3 o 4 , the charged core-shell nanomaterials are denoted as SiO 2 @Fe 3 o 4 , the sampling place of the soil in this experiment is Dongxihu District of Wuhan City, and the basic physical and mechanical indexes of the soil are shown in Table 1.

[0043] Table 1 Parameters of physical properties of silt in the East and West Lakes

[0044]

[0045]

[0046] The test soil is divided into four groups: 1) Add SiO 2 @Fe 3 o 4 0% of the soft soil, that is, the undisturbed soil; 2) Add SiO 2 @Fe 3 o 4 0.1% of soft soil; 3) Add SiO 2 @Fe 3 o 4 0.2% of soft soil; 4) Add SiO 2 @Fe 3 o 4 0.3% of soft soil. After the configured soil was left to stand for 24 hours, the electroosmotic drainage experiment was carried out.

[0047] The voltage of electroosmosis is 10V, 15V, ...

Embodiment 2

[0096] In the embodiment of the present invention, a charged core-shell nanomaterial is used, wherein the positively charged metal oxide is nano-Al 2 o 3 , the charged core-shell nanomaterials are denoted as SiO 2 @Al 2 o 3 , the sampling place of the soil in this experiment is Dongxihu District of Wuhan City, and the basic physical and mechanical indexes of the soil are shown in Table 1.

[0097] Soil electroosmosis treatment, electroosmosis adopts 20 volts direct current. Prepare well-dispersed SiO with concentrations of 0mg / ml, 0.1mg / ml, 0.5mg / ml, and 1.0mg / ml 2 @Al 2 o 3 The suspension is injected into the anode through a syringe, and the injection volume is 10ml. 1. Changes in displacement

[0098] After electroosmosis treatment for 24 hours, record the water discharge as shown in Table 4

[0099] Table 4 Different concentrations of SiO 2 @Al 2 o 3 Water output

[0100]

[0101] It can be seen from Table 4 that at a voltage of 20V, SiO 2 @Al 2 o 3 The t...

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Abstract

The invention discloses an electrified core shell nanomaterial. The electrified core shell nanomaterial is a nanocrystalline metal oxide coated SiO2 microsphere with positive charge, the particle size of the nanocrystalline metal oxide coated SiO2 microsphere with the positive charge is 1 to 600nm, and the particle size of a SiO2 microsphere is 1 to 300nm. When the electrified core shell nanomaterial and certain chemical substances are injected into soft soil, the soft soil can be treated through electric methods of electroosmosis, electrophoresis, electromigration and the like; thus, the purposes of quickening electroosmosis drainage speed of the soft soil, improving draining efficiency, enhancing the strength of the soft soil and the like are achieved.

Description

technical field [0001] The invention relates to the technical fields of electrochemistry and electroosmosis, in particular to a charged core-shell nano material and its application in electroosmotic consolidation of soft soil. Background technique [0002] In the vast areas along the coast and along the river in my country, silty soft clay is generally distributed. Silty soft clay has many disadvantages such as high water content, low strength, high compressibility, low permeability, etc. These bad characteristics bring many difficulties to engineering construction. High compressibility will cause large overall settlement or uneven settlement of the foundation; low permeability will cause soil drainage and consolidation to last for a long time, affecting engineering construction and building use; low strength will lead to insufficient bearing capacity of the foundation and Poor stability, usually this type of soil cannot meet the requirements of the project. In order to im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/11
CPCE02D3/11E02D2300/0079
Inventor 龚静石鲜明张荣堂吴建林刘肖凡徐书平李建芬
Owner WUHAN POLYTECHNIC UNIVERSITY
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