Cement-free anti-water dispersion and anti-water corrosion synchronous grouting material and its preparation method

A water-resistant dispersion and synchronous grouting technology, which is applied in the field of inorganic non-metallic building materials, can solve the problems of difficult control of grouting material construction performance, large consumption of manpower and financial resources, and grout layering and segregation, etc., to achieve good water corrosion resistance, good Water dispersion resistance, fast strength growth effect in the later stage

Inactive Publication Date: 2012-08-01
WUHAN METRO GROUP +1
View PDF4 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2. The construction performance of grouting materials is difficult to control. The slurry with high water content and good fluidity is easy to separate and separate. Float up, seriously affect the construction quality
[0005] 3. The usable time is short. The setting time of general grouting materials is about 5 hours. When the tunnel pipeline is too long or other special circumstances cause the grout to be poured immediately, the traditional grout will condense and lose its usability after being placed for a period of time, resulting in the abandonment of the grout , resulting in waste of materials and delays in construction
The discarding method is generally adopted, and the purchased land is piled up and landfilled, which not only increases the burden on enterprises, but also causes a second pollution of water sources, air, and land

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
  • Cement-free anti-water dispersion and anti-water corrosion synchronous grouting material and its preparation method
  • Cement-free anti-water dispersion and anti-water corrosion synchronous grouting material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] A method for preparing a cementless, water-dispersed, and water-corroded synchronous grouting material, comprising the steps of:

[0065] 1) Selection of raw materials: weight ratio of each component (kg / m 3 ) is: phosphogypsum: 260, fly ash + slag powder + steel slag powder: 280, attapulgite clay: 27, polyacrylamide: 1.1, aliphatic superplasticizer: 2.2, river sand: 895, water: 305; Among them, fly ash, slag powder, and steel slag powder account for the total percentage of the three: fly ash: 65%, slag powder: 25%, and steel slag powder 10%.

[0066] The phosphogypsum is solid waste from a phosphate fertilizer plant, and its main component is undisturbed phosphogypsum dihydrate; the fly ash is a primary or secondary fly ash with a specific surface area greater than 3500 cm 2 / g; the slag micropowder is blast furnace slag, the specific surface area is greater than 4500cm 2 / g; said steel slag powder is raw steel slag powder available on the market, with effective CaO ...

Embodiment 2

[0070] A method for preparing a cementless, water-dispersed, and water-corroded synchronous grouting material, comprising the steps of:

[0071] 1) Selection of raw materials: weight ratio of each component (kg / m 3 ) is: phosphogypsum: 280, fly ash + slag powder + steel slag powder: 280, attapulgite clay: 28, polyacrylamide: 1.1, aliphatic superplasticizer: 2.25, river sand: 880, water: 326; Among them, fly ash, slag powder, and steel slag powder account for the total percentage of the three: fly ash: 65%, slag powder: 25%, and steel slag powder 10%.

[0072] The phosphogypsum is solid waste from a phosphate fertilizer plant, and its main component is undisturbed phosphogypsum dihydrate; the fly ash is a primary or secondary fly ash with a specific surface area greater than 3500 cm 2 / g; the slag micropowder is blast furnace slag, the specific surface area is greater than 4500cm 2 / g; The steel slag powder described is the raw steel slag powder available on the market, with ...

Embodiment 3

[0076] A method for preparing a cementless, water-dispersed, and water-corroded synchronous grouting material, comprising the steps of:

[0077] 1) Selection of raw materials: weight ratio of each component (kg / m 3 ) is: phosphogypsum: 300, fly ash + slag powder + steel slag powder: 280, attapulgite clay: 29, polyacrylamide: 1.2, aliphatic superplasticizer: 2.3, river sand: 860, water: 342; Among them, fly ash, slag powder, and steel slag powder account for the total percentage of the sum of the three: fly ash: 65%, slag powder: 25%, and steel slag powder 10%.

[0078] The phosphogypsum is solid waste from a phosphate fertilizer plant, and its main component is undisturbed phosphogypsum dihydrate; the fly ash is a primary or secondary fly ash with a specific surface area greater than 3500 cm 2 / g; the slag micropowder is blast furnace slag, the specific surface area is greater than 4500cm 2 / g; the steel slag powder is raw steel slag powder available on the market, with an e...

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
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention relates to a synchronous grouting material of shield tunneling and its preparation method. A cement-free anti-water dispersion and anti-water corrosion synchronous grouting material is mainly composed of the following components by weight ratio: 250-350kg/m<3> of phosphogypsum, 250-400kg/m<3> of fly ash, slag powder and steel slag powder, 25-40kg/m<3> of attapulgite clay, 1-1.4kg/m<3> of polyacrylamide, 2-2.8kg/m<3> of an aliphatic high efficiency water reducer, 800-1000kg/m<3> of river sand, and 200-400kg/m<3> of water. Specifically, for the sum of the weight of the fly ash, the slag powder and the steel slag powder, the fly ash accounts for 0.5-99%, the slag powder accounts for 0.5-99%, and the steel slag powder accounts for 0.5-99%. Mixing and stirring of the materials can obtain the required synchronous grouting material, which has the characteristics of anti-water dispersion, anti-water corrosion, good fluidity, good construction performance, no pipe blockage, long usable time, and fast increase of later strength.

Description

technical field [0001] The invention belongs to the category of inorganic non-metal building materials, and in particular relates to a synchronous grouting material for shield tunnels and a preparation method thereof. technical background [0002] Underground projects such as subways and tunnels are increasing with the rapid development of the national economy, and the development of shield tunnel construction technology is also extremely rapid. Synchronous grouting materials, as a key technology in shield tunnel construction, have been paid more and more attention . The current synchronous grouting materials mainly have the following disadvantages: [0003] 1. The grouting material is easy to be eroded by water, and the grout is easily segregated by the washing of the water flow, and the water dispersion resistance is not good; the grout is caused by holes and voids to cause Ca 2+ Dissolved by water, the resistance to water corrosion is not good. [0004] 2. The construc...

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 Applications(China)
IPC IPC(8): C04B28/08
Inventor 周少东胡曙光徐建平丁庆军林文书林建平王腾飞王彪王红喜田焜黄修林
Owner WUHAN METRO GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap