Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of improvement method of sulfuric acid saline soil

A saline soil and sulfuric acid technology, applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of large expansion and low strength, and achieve the effects of good volume stability, improved compressive strength, and small expansion

Active Publication Date: 2021-10-29
SOUTHEAST UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: The purpose of the present invention is to propose a method for improving saline soil with sulfuric acid to solve the problems of large expansion and low strength in the reinforcement of saline soil with ordinary cement, and at the same time, industrial waste residue can be used to reduce cement consumption and cost , significantly improve economic efficiency

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of improvement method of sulfuric acid saline soil
  • A kind of improvement method of sulfuric acid saline soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for improving sulfuric acid saline soil, comprising the following steps:

[0024] a) Sulphate saline soil is pulverized and sieved, and cement, fly ash and lime are sieved for subsequent use;

[0025] B) add the fly ash of sulfate saline soil quality 10% in sulfate saline soil, the cement of 8%, the lime mixing of 4%;

[0026] c) Through the compaction test, it is determined that the optimum water content of the soil sample is 20%, and water is added to the mixture, and mixed evenly according to the optimum water content of 20%.

[0027] It is prepared by static compaction method, and standard curing is carried out after molding to obtain compacted samples.

Embodiment 2

[0029] A method for improving sulfuric acid saline soil, comprising the following steps:

[0030] a) Sulphate saline soil is pulverized and sieved, and cement, fly ash and lime are sieved for subsequent use;

[0031] B) add 10% fly ash of sulfate saline soil quality in sulfate saline soil, 8% cement, 8% lime mix;

[0032] c) Through the compaction test, it is determined that the optimum water content of the soil sample is 20%, and water is added to the mixture, and mixed evenly according to the optimum water content of 20%.

[0033] It is prepared by static compaction method, and standard curing is carried out after molding to obtain compacted samples.

Embodiment 3

[0035] A method for improving sulfuric acid saline soil, comprising the following steps:

[0036] a) Sulphate saline soil is pulverized and sieved, and cement, fly ash and lime are sieved for subsequent use;

[0037] B) add 15% fly ash of sulfate saline soil quality in sulfate saline soil, 10% cement, 4% lime mix;

[0038] c) Through the compaction test, it is determined that the optimum water content of the soil sample is 20%, and water is added to the mixture, and mixed evenly according to the optimum water content of 20%.

[0039] It is prepared by static compaction method, and standard curing is carried out after molding to obtain compacted samples.

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

No PUM Login to View More

Abstract

The invention discloses a method for improving sulfate saline soil, which comprises adding fly ash, cement and lime into the sulfate saline soil, and then adding water and mixing uniformly. The method of the invention solves the problem of reducing the strength of the roadbed in the prior ordinary portland cement reinforcement saline soil. And the use of fly ash and lime in large quantities not only improves the performance of the reinforced soil, but also reduces the cost, realizes waste utilization, and achieves the effect of saving resources and protecting the environment.

Description

technical field [0001] The invention relates to the technical field of sulfate saline soil, in particular to a method for improving sulfate saline soil. Background technique [0002] Coarse-grained saline soil is the material of choice for railway embankment filler. The "Railway Engineering Geological Survey Code" stipulates that the soil with an average content of soluble salt greater than 0.5% within 1m depth of the surface is called saline soil. In addition to the general characteristics of general soil, it is also a multiphase complex system with special properties due to salt cementation. Compared with other soil types, saline soil shows greater instability. The roadbed diseases caused by the salt expansion of saline soil mainly include roadbed instability such as uneven settlement of the roadbed, soil loosening of road shoulders and slopes, etc. Such roadbed disease problems mostly occur when the temperature changes greatly and sulfate is the main source. The main s...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/10E02D3/00E02D3/12
CPCC04B28/10C04B2111/00732E02D3/00E02D3/12C04B18/08C04B7/02C04B14/361
Inventor 蒋金洋赵国堂张傲宁王凤娟高云王立国
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com