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

A kind of environment-friendly loess foundation anti-liquefaction improved loess and preparation method thereof

An anti-liquefaction and loess technology, applied in the field of geotechnical mechanics, can solve the problems of less research on lignin-improved loess engineering properties and only statics, and achieve the effects of controllable cost, elimination of liquefaction potential, and high environmental benefits

Active Publication Date: 2020-10-02
SEISMOLOGICAL BUREAU OF GANSU PROVINCE CHINA EARTHQUAKE ADMINISTRATION
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lignin as an improved material for soil reinforcement is mostly focused on improving silt and low plasticity clay, and there are only research results on statics. There are few studies on the engineering properties of lignin-improved loess. The dynamic characteristics of lignin-improved loess and seismic stability studies are relatively rare

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 environment-friendly loess foundation anti-liquefaction improved loess and preparation method thereof
  • A kind of environment-friendly loess foundation anti-liquefaction improved loess and preparation method thereof
  • A kind of environment-friendly loess foundation anti-liquefaction improved loess and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0025] An environment-friendly loess foundation anti-liquefaction improved loess and a preparation method thereof. The improved loess is configured according to the following mass ratio: fly ash accounts for 25%, lignin accounts for 2%, and loess accounts for 73%; wherein the loess is finely sieved, SiO in fly ash 2 、Al 2 o 3 The sum of CaO and CaO content is not less than 75%, and the loss on ignition is not more than 10%.

[0026] The preparation method of the improved loess is as follows:

[0027] 1) dry mixing fly ash, lignin and loess according to the mass proportion in claim 1;

[0028] 2) After mixing evenly, mix the improved soil material and water according to the mass ratio of water and mixed soil as 1:6.5;

[0029] 3) According to ...

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 novel environment-friendly loess foundation anti-liquefaction improved loess and a preparation method thereof. The improved loess is prepared according to the following mass proportion: 25 percent of pulverized fuel ash, 2 percent of lignin and 73 percent of loess, wherein the loess is subjected to fine rolling and sieving; the total sum of the content of SiO2, Al2O3 and CaO in the pulverized fuel ash is not lower than 75 percent; the ignition loss is not greater than 10 percent. The preparation method of the improved loess comprises the following steps that (1) the pulverized fuel ash, the lignin and the loess are subjected to dry mixing according to the mass proportion in the claim 1; (2) after the uniform mixing, the improved soil material and the water are uniformly mixed according to the mass ratio of water to mixed soil of 1:6.5; (3) the maximum dry density is determined according to the indoor compaction test; the compaction degree is controlled to be 0.93; (4) after the compaction is completed, the curing is not smaller than 28 days; the improved loss preparation is completed. Waste pulverized fuel ash of a coal-fired power plant and paper mill blackliquid extract lignin are used as improvement materials of loess foundation anti-liquefaction treatment; the foundation treatment cost is greatly reduced; meanwhile, higher environmental protection benefits are realized.

Description

technical field [0001] The invention relates to an environment-friendly loess foundation anti-liquefaction improved loess and a preparation method thereof, belonging to the technical field of rock and soil mechanics. Background technique [0002] Loess is a Quaternary sediment with special properties. Its special structure determines that it has strong dynamic catastrophic characteristics and shows extremely high dynamic vulnerability. At the same time, loess has strong water sensitivity, that is, the salts that produce intergranular cementation in loess are easily soluble or soluble in water, making loess soften when it is saturated with water, that is, the shear strength decreases and it is in a metastable state Under earthquake action, the pore water pressure rises and the effective stress decreases, resulting in liquefaction disasters, which are manifested macroscopically as land subsidence in flat areas and low-angle long-distance slip in hilly areas. Indoor experiment...

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): C09K17/40E02B3/00
CPCC09K17/40E02B3/00
Inventor 王谦钟秀梅郭鹏马海萍苏永奇车高凤王平马金莲高中南王峻徐溶刘钊钊
Owner SEISMOLOGICAL BUREAU OF GANSU PROVINCE CHINA EARTHQUAKE ADMINISTRATION
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