Soil compound improver with frost heaving resistance

A technology of improver and soil, which is applied in soil conditioning materials, fertilizer mixtures, agriculture, etc., can solve problems such as roadbed frost heave deformation, achieve the effect of improving early strength, satisfying roadbed smoothness, and improving construction efficiency

Pending Publication Date: 2018-02-27
BEIJING SOLATUBE DAYLIGHT TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of anti-frost heave soil compoun

Method used

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  • Soil compound improver with frost heaving resistance
  • Soil compound improver with frost heaving resistance
  • Soil compound improver with frost heaving resistance

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0043] Example 1

[0044] calcining quicklime, kaolinite, montmorillonite, illite, chlorite, and magnesite to obtain 10 parts of sodium nitrate, 100 parts of sodium carbonate, 40 parts of sodium sulfate, 90 parts of calcium chloride, 30 parts of magnesium oxide, 240 parts of calcium carbonate; then add 16,000 parts of cement and 150 parts of fine sand; and fully stir to obtain a soil composite conditioner;

[0045] Then add 550,000 parts of soil, and mix it evenly through the improved soil mixing station; during the mixing process, sprinkle water according to the optimal water content of the soil, and mix it evenly;

[0046] Transported to the filling site by vehicles, leveled the road with a leveling mechanism, and compacted with a road roller;

[0047] Finally, cover with two cloths and one film and sprinkle water for maintenance.

Example Embodiment

[0048] Example 2

[0049] calcining quicklime, kaolinite, montmorillonite, illite, chlorite, and magnesite to obtain 30 parts of sodium nitrate, 60 parts of sodium carbonate, 80 parts of sodium sulfate, 50 parts of calcium chloride, 50 parts of magnesium oxide, 200 parts of calcium carbonate; then add 24,000 parts of cement and 100 parts of fine sand; and fully stir to obtain a soil composite conditioner;

[0050] Then add water (wherein the mass ratio of water and soil composite modifier is 3:5), and stir well;

[0051] It is injected into the railway or highway subgrade by means of pressure grouting.

Example Embodiment

[0052] Example 3

[0053]Prepare 15 parts of sodium nitrate, 90 parts of sodium carbonate, 50 parts of sodium sulfate, 80 parts of calcium chloride, 35 parts of magnesium oxide, 230 parts of calcium carbonate, add 19,000 parts of cement and 125 parts of fine sand; stir well and cremate at high temperature Activated in a furnace, maintained at 340°C for 1.5h, and heated to 1200°C for 1.5h to obtain a soil composite conditioner;

[0054] Then add water (wherein the mass ratio of water and soil composite modifier is 3:5), and stir well;

[0055] It is injected into the railway or highway subgrade by means of pressure grouting.

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Abstract

The invention belongs to the field of civil engineering materials and relates to a soil compound improver with frost heaving resistance. The soil compound improver with the frost heaving resistance isprepared from the following components in parts by mass: 10 to 30 parts of sodium nitrate, 60 to 100 parts of sodium carbonate, 40 to 80 parts of sodium sulfate, 50 to 90 parts of calcium chloride, 30 to 50 parts of magnesium oxide, 200 to 240 parts of calcium carbonate, 320 to 450 parts of cement and 100 to 150 parts of fine sand. The soil compound improver with the frost heaving resistance, disclosed by the invention, has the advantages that the compressive strength and compactness of a soil body can be improved and the impermeability and frost-heaving resistance of the soil are realized, so that the aim of avoiding frost heaving of the railway and highway subgrades in cold areas is achieved and the need of smoothness of the subgrades is met.

Description

technical field [0001] The invention relates to a soil composite improver, in particular to a frost-heave-resistant soil composite improver. Background technique [0002] When the soil used for the foundation or subgrade of structures such as railways and highways is silty sand, silt, silty cement or even cement, due to the high content of fine particles in the soil and poor particle gradation, it often results in insufficient compressive strength and low water content. Too high, easy to freeze and heave in winter, etc., will cause uneven deformation of the roadbed, causing safety hazards to trains or moving vehicles. In order to solve this problem, it is often necessary to improve this type of soil. At present, soil improvement mainly uses traditional bonding materials such as cement, lime, and fly ash. Such materials can increase the compressive strength of the soil and make the soil It meets the design requirements and has good economy. However, for cold regions or even...

Claims

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Application Information

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IPC IPC(8): C09K17/10C09K103/00
CPCC09K17/10C09K2103/00
Inventor 隋孝民张守超黄建川王辉张千里王仲锦张锦涛宋赵祥
Owner BEIJING SOLATUBE DAYLIGHT TECH
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