Green low-carbon curing agent for soil curing

A soil curing agent and curing agent technology, which is applied in the field of civil engineering, can solve the problems of slow growth in hydration speed and strength, and achieve the effect of saving project cost and reducing carbon dioxide emissions

Active Publication Date: 2013-01-30
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydration speed and strength of this material increase very slowly, and it takes half a year or even a few years. It is difficult to meet the needs of civil engineering, so it is usually used in cement in a small amount.

Method used

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  • Green low-carbon curing agent for soil curing
  • Green low-carbon curing agent for soil curing
  • Green low-carbon curing agent for soil curing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The soil to be reinforced in this embodiment is sandy soil with a water content of 15%, and the amount of curing agent (ratio of curing agent to soil and the total mass of curing agent) is 5% and 10%, respectively. Three curing agents are used: (1) granulated blast furnace slag powder and activated magnesium oxide, wherein the mass ratio of activated magnesium oxide to the curing agent is 0% (that is, no active magnesium oxide), 5%, 10%, and 20% , 30%, 50%, 100% (that is, only containing active magnesium oxide); (2) granulated blast furnace slag powder and slaked lime, wherein the mass ratio of live slaked lime to the curing agent is 0% (that is, does not contain slaked lime), 5% %, 10%, 20%, 30%, 50%, 100% (that is, only slaked lime); (3) Ordinary Portland cement. After mixing the above-mentioned curing agent and wet soil in the laboratory, pour it into a standard mold with a diameter of 5 cm and a height of 10 cm, lightly vibrate and compact it, and then place it in a...

Embodiment 2

[0018]The soil to be reinforced in this example is clayey soil with a water content of 40%, and the amount of curing agent (ratio of the curing agent to the total mass of the soil and the curing agent) is 10% and 15%, respectively. Three curing agents are used: (1) granulated blast furnace slag powder and activated magnesium oxide, wherein the mass ratio of activated magnesium oxide to the curing agent is 0% (that is, no active magnesium oxide), 5%, 10%, and 20% , 30%, 40%, 50%, 100% (that is, only active magnesium oxide); (2) granulated blast furnace slag powder and slaked lime, wherein the mass ratio of live slaked lime to the curing agent is 0% (that is, no slaked lime ), 5%, 10%, 20%, 30%, 40%, 50%, 100% (that is, only slaked lime); (3) Ordinary Portland cement. After mixing the above-mentioned curing agent and wet soil in the laboratory, pour it into a standard mold with a diameter of 5 cm and a height of 10 cm, lightly vibrate and compact it, and then place it in a curin...

Embodiment 3

[0021] The soil to be consolidated in this embodiment is sandy soil, and the mass ratio of curing agent to dry soil is 5% and 10%. Based on the results of Example 1, granulated blast furnace slag fine powder: activated magnesia = 9: 1 (that is, the mass ratio of active magnesia to the curing agent is 10%), granulated blast furnace slag fine powder: slaked lime = 9: 1 (ie Slaked lime accounts for 10% of the mass ratio of the curing agent) and three kinds of curing agents such as ordinary Portland cement. Three different water contents are used: 10%, 12.5%, and 15% to analyze the curing effect of the new curing agent under different water contents. Mix the above-mentioned curing agent, dry soil and distilled water with different designed dosages evenly in the laboratory, pour them into a standard mold with a diameter of 5 cm and a height of 10 cm, vibrate slightly, and compact it, and then heat it at a temperature of 20 degrees, relatively Curing room with a humidity of 98% for...

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Abstract

The invention discloses a green low-carbon curing agent for soil curing. The soil curing agent is characterized by comprising granulated blast furnace slag micro powder and exciting agent, wherein the exciting agent comprises active magnesia, the exciting agent is 30 to 5 percent of the total mass of the soil curing agent, and the granulated blast furnace slag micro powder is 70 to 95 percent of the total mass of the curing agent. The exciting agent comprises slaked lime, wherein the slaked lime is 10 to 90 percent of the mass of the active magnesia. The exciting agent comprises calcined lime, wherein the calcined lime is 7 to 66 percent of the mass of the active magnesia.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and is a green and low-carbon environment-friendly curing agent for curing soil. Background technique [0002] Mixing pile technology (wet method, dry method) is one of the effective methods to strengthen the soft soil foundation. It sprays the curing agent (slurry or dry powder) into the soft soil while drilling through the deep mixing machine, and mixes the soft soil and The curing agent is forced to stir, and through the physical and chemical interaction between the curing agent and the soft soil, the solidified soil with high strength, integrity and good water stability is formed. The traditional mixing pile curing agent is mainly cement and quicklime. Quicklime is the main curing agent in the early stage of mixing pile technology (the late 1970s), but its disadvantage is that the strength of the formed mixing pile is too low, especially the effect of soft soil foundation treatment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/02C09K17/06C09K103/00
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
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