Carbonized foam light soil and preparation method thereof

A technology of carbonized foam and lightweight soil, applied in ceramic products, other household utensils, applications, etc., can solve the problems of slow growth of cement soil strength, non-green environmental protection, long maintenance time, etc., to reduce cement consumption and increase cracking Risk, the effect of improving engineering safety

Pending Publication Date: 2022-01-25
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional air-bubble mixed light soil mostly uses cement as the curing agent. This preparation method has the disadvantages of high cost, high energy consumption, and large pollution. Therefore, there are certain limitations in practical engineering applications

Method used

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  • Carbonized foam light soil and preparation method thereof
  • Carbonized foam light soil and preparation method thereof
  • Carbonized foam light soil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A carbonized foam light soil, each cubic meter of the carbonized foam light soil contains: 100 parts of activated magnesium oxide powder, 100 parts of silty clay, 10 parts of CO2 bubble group and 200 parts of water. The silty clay needs to be air-dried first, then crushed and passed through a 2mm sieve. The water used is distilled water, containing CO 2 Moisture used in bubble populations.

[0027] Choose sodium dodecyl sulfonate as foaming agent, dilute foaming agent by 40 times of dilution factor, control sodium cocoyl glycinate active agent dosage at 3% of foaming agent, mix to obtain foaming liquid, its foaming rate 20 times, half-life of 20 ~ 40min.

[0028] Table 1 Main physical and chemical indicators of silty clay

[0029] Test items test value Natural density ρ / (g.cm -3 )

1.88 Natural moisture content, w / % 33.3 Maximum dry density / (g.cm -3 )

1.72 Optimum moisture content / % 17.4 Liquid limit, w L (%)

43 ...

Embodiment 2

[0039] A carbonized foam light soil, each cubic meter of the carbonized foam light soil contains: 100 parts of activated magnesium oxide powder, 100 parts of silty clay, 10 parts of CO2 bubble group and 200 parts of water. Adopt same silty clay, magnesia, water and blowing agent as in embodiment 1, and also keep consistent to the processing method of all kinds of materials.

[0040] The preparation method of the carbonized foam light soil in Example 2 is the same as in Example 1, and the curing time is 1 d.

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Abstract

The invention belongs to the technical field of civil construction engineering materials, and particularly relates to green and low-carbon foam light soil prepared by using carbon dioxide and magnesium oxide as raw materials. The carbonized foam light soil is prepared from the following raw materials in parts by weight: 10 to 200 parts of magnesium oxide, 10 to 100 parts of a filler, 2 to 45 parts of CO2 bubble group and 20 to 400 parts of water. According to the invention, based on the problems of large carbon emission and serious energy consumption caused by a cement curing agent used by traditional bubble mixed light soil, the invention aims to provide a novel bubble mixed light soil operation method, so that a foundation treatment technology is promoted to be converted from high pollution and high energy consumption to low carbon, environmental protection and sustainable conversion, and the light soil is prepared by taking magnesium oxide as a curing agent and carbon dioxide gas as a raw material of bubbles.

Description

technical field [0001] The invention belongs to the technical field of civil engineering materials, and in particular relates to a green, low-carbon foam light soil prepared by using carbon dioxide and magnesium oxide as raw materials. Background technique [0002] Existing foam mixed light soil is micro-bubble group generated by physical, chemical or biological foaming agent foaming, main curing agent (such as cement-based cementitious material), auxiliary curing agent (such as gypsum powder, silicon powder, pulverized coal Ash), water, additives (such as early strength agent, water reducer), etc. are fully stirred according to a specific ratio, and then condensed and formed by a series of physical and chemical actions. An inorganic synthetic material. Because the size and number of closed air bubbles formed inside the soil can be controlled to a certain extent, the air-bubble mixed light soil has strong adjustable bulk density, strong adjustable strength, high fluidity, go...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10C04B38/10C04B111/40
CPCC04B28/10C04B38/106C04B38/103C04B2111/40C04B14/106C04B24/20C04B24/026C04B22/10C04B24/124
Inventor 刘松玉张莹刘宜昭蔡光华杜广印张超哲
Owner SOUTHEAST UNIV
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