Unlock instant, AI-driven research and patent intelligence for your innovation.

Treated chlorine saline soil and method for using same as roadbed and roadbase

A saline soil and chlorine salt technology, applied in roads, roads, road repairs, etc., can solve problems such as large differences in engineering properties of saline soil, improve strength and water stability, eliminate low strength, and avoid repeated waste Effect

Inactive Publication Date: 2010-08-18
TIANJIN MUNICIPAL ENG DESIGN & RES INST
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, the engineering properties of saline soil are greatly affected by the region, and the engineering properties of saline soil of different soil types in different regions are quite different. Even the properties of saline soil in coastal and coastal areas are not nearly the same. Successful experience, but one model cannot be copied, and the ratio of other regions cannot be blindly applied; the engineering characteristics of saline soil should be studied in different regions, and the research should be carried out according to the local actual conditions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Get the material ready, and its composition comprises 8% lime, 8% fly ash, 84% saline soil (chlor salt mass content is 1.13%) taken on-site in terms of mass percent; Drying and crushing; mix the prepared material with the saline soil evenly to prepare mixed soil, measure the natural water content of the mixed soil to be 11.2-14.1%, and determine the spraying according to the difference between the optimum water content and the natural water content The water volume is 39~81kg / m 3 to make it reach the optimum water content; on-site paving and rolling, the degree of compaction of the subgrade shallow treatment is controlled above 95%, and the degree of compaction of the subbase and base is controlled above 98%; after each layer of rolling is completed, sprinkle water After 7 days of curing to meet the design strength requirements, spread a layer of mixture. It is determined that the unconfined compressive strength of lime fly ash treated saline soil is 1.12-1.29Mpa at th...

Embodiment 2

[0029] Get the material ready, its composition comprises 10% lime, 6% fly ash, 84% saline soil (chlor salt mass content is 1.23%) taken on-site in terms of mass percent; the saline soil taken on-site Drying and crushing; mix the prepared material with the saline soil evenly to prepare mixed soil, measure the natural water content of the mixed soil to be 11.2-16.1%, and determine the spraying according to the difference between the optimum water content and the natural water content The water volume is 39~105kg / m 3to make it reach the optimum water content; on-site paving and rolling, the degree of compaction of the subgrade shallow treatment is controlled above 95%, and the degree of compaction of the subbase and base is controlled above 98%; after each layer of rolling is completed, sprinkle water After 7 days of curing to meet the design strength requirements, spread a layer of mixture. It is determined that the unconfined compressive strength of the lime fly ash treated sa...

Embodiment 3

[0031] Get the material ready, and its composition comprises 6% lime, 10% fly ash, 84% saline soil (chlor salt mass content is 1.22%) taken on-site in terms of mass percent; Drying and crushing; mix the prepared material with the saline soil evenly to prepare mixed soil, measure the natural water content of the mixed soil to be 11.2-15.2%, and determine the spraying according to the difference between the optimum water content and the natural water content The water volume is 37~102kg / m 3 to make it reach the optimum water content; on-site paving and rolling, the degree of compaction of the subgrade shallow treatment is controlled above 95%, and the degree of compaction of the subbase and base is controlled above 98%; after each layer of rolling is completed, sprinkle water After 7 days of curing to meet the design strength requirements, spread a layer of mixture. It is determined that the unconfined compressive strength of lime fly ash treated saline soil is 0.98-1.07Mpa at ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Compressive strengthaaaaaaaaaa
Unconfined compressive strengthaaaaaaaaaa
Unconfined compressive strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses treated chlorine saline soil and a method for using the treated chlorine saline soil as a roadbed and a roadbase. The method comprises the following steps of: (1) preparing materials; (2) air-curing and crushing the chlorine saline soil taken on site; (3) taking a chlorine saline soil sample and determining the content of chlorine salt in the soil sample; (4)preparing composite soil by adopting 4-10% of lime, 2-6% of cement and 84-94% of chlorine saline soil or adopting 6-10% of lime, 6-10% of coal ash and 80-88% of chlorine saline soil; (5) uniformly mixing the soil on each layer according to the determined proportion and constituents and determining water-spraying amount to lead the soil to reach optimal water content; (6)on-site spreading, rolling and compressing; and (7)after each layer is rolled and compressed, laying a layer of mixture after water-sprinkling maintenance. The method achieves the purposes of utilizing the on-site materials, avoiding repetition and waste, and improving the strength of the roadbed and the roadbase as well as water stability.

Description

technical field [0001] The invention relates to a treatment technology for chlorine saline soil, in particular to an application technology for treating chlorine saline soil as road subgrade and base. Background technique [0002] Chlorine saline soil is a special soil sensitive to the environment, and its engineering characteristics vary with the water and thermal environment. The difference between it and non-saline soil is that the former contains more salt. Under the influence of moisture and temperature, the salts in the soil (especially soluble crystalline salts) will change in phase and quantity, making saline soil Has unstable structural engineering properties. [0003] For areas with medium saline soil and strong saline soil, soil chlorine salinization is the main mode of high-grade road subgrade failure and one of the main causes of high-grade road damage, which is very harmful to road construction. Chlorine saline soil has a large plasticity index and high salt ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): E01C21/00E01C3/04
Inventor 刘润有王晓华王新岐赵建伟彭波李文深龚风刚蒋宏伟代茂华程海波练象平曾伟
Owner TIANJIN MUNICIPAL ENG DESIGN & RES INST