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Soil stabilizer and preparation method and application thereof

A technology of soil curing agent and sodium chloride, which is applied in the direction of chemical instruments and methods, applications, soil conditioning materials, etc., can solve the problems of large dry shrinkage of cement soil, easy softening, and increased engineering costs, and achieves improved compressive strength, The preparation method is simple and the effect of solving application problems

Inactive Publication Date: 2017-10-17
BEIJING VOCATIONAL COLLEGE OF AGRI
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Problems solved by technology

[0003] In domestic soil stabilization projects, traditional soil stabilization materials such as lime, cement, and fly ash are mostly used, but these soil stabilization agents often have certain deficiencies.
For example, the strength of the solidified body formed by lime soil is slow, which often affects the construction progress, especially the lime soil has large dry shrinkage, easy cracking, easy softening, and poor water stability.
The cement soil also has problems such as large dry shrinkage and easy cracking, and the exposed cement soil is prone to cracks due to uneven volume changes caused by cement hydration reactions, ambient temperature, and humidity changes. The appearance of such cracks will lead to The compressive strength, impermeability, frost resistance and erosion resistance of the solidified body (cement soil) are reduced, and a large amount of cement is used as the curing agent in the cement soil, which also increases the project cost
In recent years, lime-fly ash has been widely used in soil stabilization treatment, but it is found that the early strength of lime-fly ash soil is low during use, which directly affects the construction progress. In addition, lime-fly ash soil also has the disadvantage of poor water stability, which affects engineering quality

Method used

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  • Soil stabilizer and preparation method and application thereof
  • Soil stabilizer and preparation method and application thereof
  • Soil stabilizer and preparation method and application thereof

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Embodiment

[0018] Example: Preparation of soil solidification agent

[0019] Put sodium chloride, light burnt magnesia, building gypsum, building lime, and granulated blast furnace slag powder into the mixing equipment according to the proportion, and mix them evenly. The content of each component is shown in Table 1.

[0020] Among them, the sodium chloride used in the embodiments is salt used for mining in seawater and lake salt or refined industrial salt made from salt lake brine, rock salt or underground brine, and the sodium chloride content is ≥92%. ≤2%, water insoluble matter ≤0.4%.

[0021] The light burnt magnesia used is the light burnt magnesia produced by calcining and grinding magnesite for magnesite products. The soil solidifying agent of the present invention uses lightly burned magnesia, with a magnesia content of 85%, of which, the content of active magnesia is 70%, the content of free magnesia is 1.0%, and the remaining 6% is sieve with 80μm square holes.

[0022] The "buildi...

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Abstract

The invention discloses a soil stabilizer and a preparation method and application thereof and belongs to the technical field of civil engineering materials. The soil stabilizer is prepared from by weight, 1%-3% of sodium chloride, 5%-10% of light-calcined magnesia, 5%-15% of building plaster, 5%-10% of building lime and 70%-80% of granulated blast furnace slag. The solid stabilizer is simple in preparation method, unconfined compressive strength of stabilized soil can be remarkably improved, and water stability of the stabilizer soil can be further improved.

Description

Technical field [0001] The invention relates to a soil solidification agent and a preparation method and application thereof, and belongs to the technical field of civil engineering materials. Background technique [0002] Soil curing agent is still a new thing in our country. From research, production to application construction, it can be said to be a complex system engineering involving many disciplines such as chemical engineering, machinery, construction engineering, road engineering, water conservancy engineering and so on. [0003] In domestic soil solidification projects, traditional soil solidification materials such as lime, cement, and fly ash are mostly used, but these soil solidification agents often have certain deficiencies. For example, the strength of the solidified body formed by lime soil is slowly formed, which often affects the construction progress, especially lime soil has large shrinkage, easy cracking, easy softening, and poor water stability. Cement soil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/06C09K103/00
CPCC09K17/06C09K2103/00
Inventor 刘诚斌高秀清张昊刘春鸣
Owner BEIJING VOCATIONAL COLLEGE OF AGRI
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