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A treatment system for foundation reinforcement and carbonization pile forming method

A treatment system and foundation reinforcement technology, applied in sheet pile walls, soil protection, foundation structure engineering, etc., can solve problems such as difficult reinforcement, surface leakage, etc., and achieve the effect of improving efficiency and saving costs

Active Publication Date: 2015-10-28
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an energy-saving, environment-friendly, economical and rapid treatment system for strengthening foundations and a carbonization pile method, using a foaming device to effectively mix carbon dioxide into the soil and carbonize under the dense and high-strength covering layer formed by the accelerated curing device Reinforcement solves the problems of serious surface carbon dioxide gas leakage and difficult surface reinforcement during the carbonization process, and can be continuously constructed, significantly improving the efficiency of foundation treatment

Method used

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  • A treatment system for foundation reinforcement and carbonization pile forming method
  • A treatment system for foundation reinforcement and carbonization pile forming method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] a. Choose an anionic surfactant-type foaming agent. The foaming agent and distilled water are formulated into a foaming liquid at a mass ratio of 1:30. The half-life of the foam is about 30 minutes, and it is loaded into the foaming device 13; and the dry activity Magnesium oxide is loaded into the curing agent storage tank 21; when the radius of the stirring blade 5 is less than 200 mm and the rotation speed of the stirring shaft 7 is less than 30 r / min, the lifting speed is less than 0.5 m / min, and the pressure of the pressure regulating valve a14 is adjusted to 150 kPa, perform carbon dioxide gas foaming, and adjust the pressure of the pressure regulating valve c24 to 200 kPa, and perform gas drying;

[0047] b. Move the spiral cutting bit 1 to a preset pile position, start the mixing device in the penetration state, the spiral cutting bit 1 cuts the soil, the mixing blade 5 breaks the soil and stirs and penetrates to the preset pile position Stop at the predetermined d...

Embodiment 2

[0054] a. Choose a protein foaming agent, and formulate a foaming liquid with a mass ratio of 1:40 between the foaming agent and distilled water, the half-life of the foam is about 45 minutes, and put it into the foaming device 13; and oxidize the dry active Magnesium is loaded into the curing agent storage tank 21; when the radius of the stirring blade 5 is 200-300 mm and the rotation speed of the stirring shaft 7 is 30-100 r / min, the lifting speed is 0.5-1.0 m / min, adjust the pressure regulating valve The pressure of a14 is 300 kPa, carbon dioxide gas is foamed, and the pressure of the pressure regulating valve c24 is adjusted to 300 kPa, and the gas is dried;

[0055] b. Move the spiral cutting bit 1 to a preset pile position, start the mixing device in the penetration state, the spiral cutting bit 1 cuts the soil, the mixing blade 5 breaks the soil and stirs and penetrates to the preset pile position Stop at a predetermined depth of 20m;

[0056] c. Start the stirring device i...

Embodiment 3

[0062] a. Select anionic surfactant type foaming agent and protein type foaming agent, and mix them according to the mass ratio of 1:1. The foaming speed of anionic surface active agent type foaming agent is faster than that of protein type foaming agent, but the stabilization time is short For protein foaming agent, the mixed foaming agent and distilled water are formulated into a foaming liquid at a mass ratio of 1:40, and loaded into the foaming device 13; and the dry activated magnesium oxide and quicklime powder are prepared at a mass ratio of 4 :1 Mix into the curing agent storage tank 21; when the radius of the stirring blade 5 is 300-400 mm and the rotation speed of the stirring shaft 7 is 30-100 r / min, the lifting speed is 0.5-1.0 m / min, adjust the adjustment The pressure of the pressure valve a14 is 400 kPa for carbon dioxide gas foaming, the half-life of the foam is about 30 min, and the pressure of the pressure regulating valve c24 is adjusted to 400 kPa, and the gas...

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Abstract

The invention discloses a processing system and a carbonization pile-forming method used for ground stabilization. The processing system comprises a stirring device, a curing agent supply device, a foam supply device and a curing accelerating device. The foundation is reinforced by using the system, a light roasting activity magnesia powder or a mixture of the light roasting activity magnesia powder and quicklime powder is used as a curing agent, and carbon dioxide foams are generated by one of or a mixture of anion surface activity foaming agent, a protide foaming agent or a compound foaming agent according to different half-life period characteristics of the foaming agents; a sealing film and a movable sealing cover are used as temporary shields used for accelerating the formation of a curing soil layer, and a covering film with high compactness is provided for the carbonization of a lower pile body. The energy-saving and environment-friendly new curing agent is adopted, the gas leakage of carbon dioxide and the using amount of ventilating guide pipes in the construction are reduced simultaneously, and the processing system and the carbonization pile-forming method have the advantages of energy conservation, emission reduction, sustainable development and efficient construction in the raw material production and construction processes.

Description

Technical field [0001] The invention relates to the field of civil engineering foundation treatment, in particular to a treatment system for foundation reinforcement and a carbonization pile method. Background technique [0002] The emission of carbon dioxide and other greenhouse gases is increasing day by day, which has become one of the bottlenecks restricting the development of social economy and ecological environment. my country is in the rapid stage of economic development. The related industrial chain radiated by the construction industry bears an inescapable social responsibility for resource consumption and environmental impact. The development of low-carbon buildings and the promotion of energy conservation and emission reduction have become the mainstream of the international construction industry. The development of my country's construction industry is inevitable. [0003] According to statistics, the annual global portland cement production exceeds 2.5 billion tons, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/12E02D5/46
Inventor 刘松玉蔡光华易耀林杨泳章定文
Owner SOUTHEAST UNIV