Method and device for carbonizing and curing soil

A solidification method and soil technology, applied in soil protection, infrastructure testing, construction, etc., to achieve the effect of reducing carbon dioxide emissions, reducing carbon dioxide emissions and energy consumption

Inactive Publication Date: 2011-06-22
SOUTHEAST UNIV
View PDF5 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventor has found through a large number of experiments that the activated magnesia solidified soil is easy to react (carbonize) with carbon dioxide, especially in a high-solubility, high-pressure carbon dioxide environment, the carbonization process will occur within hours or even tens of minutes. complete, forming magnesium carbonates

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for carbonizing and curing soil
  • Method and device for carbonizing and curing soil
  • Method and device for carbonizing and curing soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In this embodiment, it is an indoor test, mainly analyzing the feasibility of carbonization and solidification method and the influence of different carbonization time on the strength of carbonized soil. The soil to be solidified is sandy soil with a water content of 10%, the curing agent is active magnesium oxide, and the active magnesium oxide content (the ratio of active magnesium oxide to the total mass of the soil body and active magnesium oxide) is 10%. First mix the active magnesium oxide and the soil according to the design ratio, stir evenly, pour it into a standard mold with a diameter of 5 cm and a height of 10 cm, vibrate and compact it, and demould it after about half an hour, and install the sample on the On the three-axis permeameter, a confining pressure of 400kPa is applied, and then 200kPa of carbon dioxide gas is injected into the sample from the bottom for carbonization curing. The curing time is 45 minutes, 1.5 hours, 3 hours, 6 hours and 12 hours re...

Embodiment 2

[0027] In this embodiment, it is a carbonized stirring pile test, the soil to be reinforced is dry sandy soil, the curing agent is activated magnesium oxide, and the mass ratio of activated magnesium oxide to dry soil is 10%. First use a small stirring pile machine 1 to stir in the soil and spray active magnesia slurry to form uncarbonized active magnesia solidified soil 3, and then use the stirring pile machine 1 to introduce carbon dioxide gas while stirring for carbonization. The specific construction see process image 3 , and introduced as follows:

[0028] (a) Arrange the stirring pile 1 above the natural soil body 2 to be solidified, start the stirring pile 1, the stirring pile 1 sinks, stir and spray active magnesium oxide slurry at the same time, until the stirring blade reaches the design elevation of the bottom surface;

[0029] (b) Stirring pile driver 1 promotes, simultaneously stirs and sprays activated magnesium oxide slurry, until stirring blade reaches the gr...

Embodiment 3

[0034] This embodiment is a carbonized stirring pile test, the soil to be reinforced is dry sandy soil, the curing agent is activated magnesia, and the mass ratio of activated magnesia to dry soil is 10%. First use a small-scale stirring pile machine 1 to stir in the soil, spray active magnesium oxide slurry to form uncarbonized active magnesium oxide to stir and solidify the soil 3, and then deploy a carbonization device to carry out carbonization through the carbonization device.

[0035] Carbonization device comprises carbon dioxide generator 7 and outer sleeve 5, is provided with the through hole 12 as carbon dioxide outlet on the tube wall of outer sleeve 5, is connected with carbon dioxide import pipe 6 on carbon dioxide generator 7 and the carbon dioxide on carbon dioxide generator 7 The gas outlet is connected with one end of the carbon dioxide introduction pipe 6, and the other end of the carbon dioxide introduction pipe 6 is located at the end of the outer sleeve 5. ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method and device for carbonizing and curing soil. The soil carbonizing and curing method comprises the steps of: stirring and mixing a soil body needing to be cured and a curing agent according to the mass ratio of (12-19): (8-1) uniformly; and then introducing carbon dioxide gas in the cured soil to carbonize the cured soil body so as to form carbonate compound cured soil. The curing agent comprises active magnesium oxide. The device used for carbonizing and curing soil comprises a carbon dioxide generator and an outer sleeve, wherein a through hole used as a carbon dioxide outlet is arranged on the wall of the outer sleeve, a carbon dioxide inlet pipe is connected to the carbon dioxide generator, the carbon dioxide outlet on the carbon dioxide generator is connected with one end of the carbon dioxide inlet pipe, and the other end of the carbon dioxide inlet pipe is positioned in the outer sleeve. A sealing film is sleeved on the carbon dioxide inlet pipe, covers the top part of the outer sleeve and extends to the exterior of the outer sleeve. A gas seal ring is arranged between the outer sleeve and the carbon dioxide inlet pipe, and positioned on the top of the outer sleeve.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and relates to a green, low-carbon, environment-friendly carbonization curing method and a device for curing soil. Background technique [0002] Curing is a common method to strengthen and improve the properties of soil. It uses various methods to stir and mix the curing agent with the soil, and to improve the physical and mechanical properties of the soil through the curing effect of the curing agent (such as the hydration of cement). Properties (water content, permeability, strength, modulus, etc.), so as to meet the needs of civil engineering. At present, the conventional soil curing agents are mainly cement and quicklime. Quicklime (GaO) is the main soil curing agent in the early stage. Quicklime will react with the moisture in the soil quickly to form calcium hydroxide (Ga(OH) 2 ), the reaction will reduce the water content in the soil, and improve the properties of the soil, whi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/12E02D33/00
Inventor 易耀林马丁・利什卡阿尔比・阿勒-塔瓦刘松玉杜延军
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap