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Cement modifier containing salinized soil and preparation method thereof

A cement modifier and saline soil technology, which is applied in the field of cement modification, can solve the problem of resource utilization of soluble salts, etc., and achieve the effect of strengthening toughness, strengthening strength and strengthening resistance

Active Publication Date: 2021-04-30
包头市鼎鑫电杆有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although this method of using emulsified asphalt to solidify saline soil applies saline soil to building materials, it only does simple mixing without any targeted treatment of soluble salts in saline soil, nor does it use The specificity of soluble salt and its resource utilization

Method used

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  • Cement modifier containing salinized soil and preparation method thereof
  • Cement modifier containing salinized soil and preparation method thereof
  • Cement modifier containing salinized soil and preparation method thereof

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Embodiment 1-22

[0046] Embodiment 1-22, a cement modifier containing saline soil, its components and corresponding quality are shown in Table 1, and prepared by the following steps:

[0047] S1: Pretreatment of saline soil: wash and salt the saline soil at room temperature, and after the saline soil is naturally dried, it is uniformly crushed to obtain saline soil powder;

[0048] S2: Dissolution of vinyl bis-stearamide: heat the temperature of the organic solvent, add vinyl bis-stearamide and stir until uniformly dispersed to obtain a vinyl bis-stearamide solution;

[0049] S3: saline soil dispersion: mix vinyl bis stearamide solution with saline soil, stir evenly, cool to normal temperature to obtain saline soil dispersion solution;

[0050] S4: Curing of saline soil: mix hexamethylcyclotrisiloxane and vinyl raw rubber in a weight ratio of 1:1, and add vinyl bis stearamide solution, stir it evenly and mix it with the salted soil The soil dispersion solution is mixed with Portland cement, h...

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Abstract

The invention relates to the field of cement modification, and particularly discloses a cement modifier containing salinized soil and a preparation method of the cement modifier. The cement modifier containing salinized soil comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 25-65 parts of salinized soil, 0-5 parts of vinyl bis stearamide, 2-5 parts of Portland cement, 0-5 parts of a shrinking agent, and 0-5 parts of an organic solvent, and the component B is prepared from 5-8 parts of monocalcium aluminate. The preparation method comprises the following steps: pretreating salinized soil; dissolving vinyl bis stearamide; dispersing the salinized soil; solidifying the salinized soil; and finally mixing. According to the invention, the cement modifier containing the salinized soil has the advantages that the resistance of cement to thermal expansion and cold contraction is enhanced by utilizing soluble salt in the salinized soil; and the preparation method disclosed by the invention has the advantage that the cement with resistance to thermal expansion and cold contraction is prepared by simple and convenient steps.

Description

technical field [0001] The invention relates to the field of cement modification, in particular to a cement modifier containing saline soil. Background technique [0002] Saline soil is a general term for saline soil, alkaline soil and various salinized and alkalized soils. It is mainly distributed in the northwest of my country, the Hetao area of ​​Inner Mongolia and the southeast coast, but most of them are concentrated in the northwest inland basin. The soil with an average soluble salt content greater than 0.3% within 1m of the surface layer is called saline soil; common soluble salts include chloride salts, sulfates, and carbonates; [0003] Saline soil has the characteristics of high natural water content, large natural void ratio, high compressibility, low shear strength, small consolidation coefficient, long consolidation time, high sensitivity, large disturbance, and poor water permeability. Salt heaving, mud turning, frost heaving, leaching and collapsing and othe...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B14/361C04B22/08C04B24/124C04B24/2611C04B24/42C04B24/00C04B24/005
Inventor 杨志钢朱利达
Owner 包头市鼎鑫电杆有限公司
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