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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 compound improver, to solve the problem of frost heave deformation caused by road gene moisture intrusion

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

Embodiment 1

[0044] Calcining quicklime, kaolinite, montmorillonite, illite, chlorite group, 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 16000 parts of cement and 150 parts of fine sand; and fully stir to obtain a soil composite improver;

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

[0046] Transport it to the filling site by vehicle, level the road surface with a leveling mechanism, and compact it with a road roller;

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

Embodiment 2

[0049] Calcining quicklime, kaolinite, montmorillonite, illite, chlorite group, 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 24000 parts of cement and 100 parts of fine sand; and fully stir to obtain a soil composite improver;

[0050] Add water afterwards (wherein the mass ratio of water and soil compound improver is 3:5), fully stir;

[0051] It is injected into the railway or road subgrade by pressure grouting.

Embodiment 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, and 230 parts of calcium carbonate, add 19,000 parts of cement and 125 parts of fine sand; stir well, and cremate at high temperature Activate in the furnace, maintain at 340°C for 1.5h, raise the temperature to 1200°C and maintain for 1.5h to obtain a soil compound improver;

[0054] Add water afterwards (wherein the mass ratio of water and soil compound improver is 3:5), fully stir;

[0055] It is injected into the railway or road subgrade by 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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