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

Special slurry pressing material for high-speed railway roadbed rush repair reinforcement and grouting method thereof

A technology for high-speed railways and roadbeds, which is applied to roads, infrastructure engineering, soil protection, etc., can solve problems such as the inability to use high-speed railways for roadbed repair, insufficient strength of grouting materials, etc., to achieve rich sources of raw materials and no bleeding of the slurry. , The effect of preventing grouting from blocking the pipe

Inactive Publication Date: 2017-06-20
中铁四院集团工程建设有限责任公司
View PDF15 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the grouting material in the prior art mentioned in the above background technology is not strong enough to be applied to the repair of high-speed railway roadbed, and to provide a special grouting material for emergency repair and reinforcement of high-speed railway roadbed and its grouting method

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
  • Special slurry pressing material for high-speed railway roadbed rush repair reinforcement and grouting method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1: Preparation of a special grouting material for emergency repair and reinforcement of high-speed railway subgrades, weighed according to the mass ratio: 60 kg of rapid-hardening sulphoaluminate cement, 3 kg of silicon micropowder, 6.22 kg of anhydrous anhydrite, plastic expansion Agent 0.03kg, sand 30kg, water reducer 0.3kg, hardening accelerator 0.05kg, retarder 0.2kg, stabilizer 0.03kg, defoamer 0.04kg, latex powder 0.13kg.

[0043] The silicon micropowder used in this embodiment is semi-encrypted or high-encrypted active silicon micropowder, with an active SiO2 content of ≥90%; the plastic expansion agent used is one of azodicarbonamide, azobisisobutyronitrile or azobisisoheptanonitrile A mixture of one or more of them, the average particle size of the azo compound is ≤10μm, and the gas generation rate is ≥200ml / g; the sand used is well-graded washed and dried yellow sand, river sand or natural quartz sand. Particle size ≥ 70 mesh; the water reducer used is...

Embodiment 2

[0046] Example 2: Prepare a special grouting material for emergency repair and reinforcement of high-speed railway embankment, weigh according to the mass ratio: 80kg of rapid-hardening sulphoaluminate cement, 1.4kg of silica micropowder, 5.9kg of anhydrous anhydrite, plastic Expansion agent 0.02kg, sand 12kg, water reducer 0.25kg, hardening accelerator 0.04kg, retarder 0.15kg, stabilizer 0.03kg, defoamer 0.05kg, latex powder 0.16kg.

[0047] The silicon micropowder used in this embodiment is semi-encrypted or high-encrypted active silicon micropowder, with an active SiO2 content of ≥90%; the plastic expansion agent used is one of azodicarbonamide, azobisisobutyronitrile or azobisisoheptanonitrile A mixture of one or more of them, the average particle size of the azo compound is ≤10μm, and the gas generation rate is ≥200ml / g; the sand used is well-graded washed and dried yellow sand, river sand or natural quartz sand. Particle size ≥ 70 mesh; the water reducer used is one or a...

Embodiment 3

[0050] Example 3: Preparation of a special grouting material for emergency repair and reinforcement of high-speed railway subgrades, weighed according to the mass ratio: 90 kg of rapid-hardening sulphoaluminate cement, 4 kg of silicon micropowder, 5.03 kg of anhydrous anhydrite, plastic expansion 0.03kg water reducing agent, 0.05kg hardening accelerator, 0.15kg retarder, 0.03kg stabilizer, 0.06kg defoamer, 0.35kg latex powder, sand is not added in this embodiment.

[0051] The silicon micropowder used in this embodiment is semi-encrypted or high-encrypted active silicon micropowder, with an active SiO2 content of ≥90%; the plastic expansion agent used is one of azodicarbonamide, azobisisobutyronitrile or azobisisoheptanonitrile A mixture of one or more of them, the average particle size of the azo compound is ≤10μm, and the gas generation rate is ≥200ml / g; the sand used is well-graded washed and dried yellow sand, river sand or natural quartz sand. Particle size ≥ 70 mesh; the...

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
The average particle sizeaaaaaaaaaa
Gas outputaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of a high-speed railway roadbed maintenance material, in particular to a special slurry pressing material for high-speed railway roadbed rush repair reinforcement and a grouting method thereof. The special slurry pressing material is prepared from the following raw materials in percentage in mass: 40 to 90 percent of high early strength sulphoaluminate cement, 1 to 5 percent of silica micro powder, 3 to 7 percent of anhydrite, 0.01 to 0.1 percent of plastic expansion agents, 0 to 55 percent of sand, 0.2 to 0.35 percent of water reducing agents, 0.01 to 0.1 percent of hardening accelerators, 0.1 to 0.3 percent of retarders, 0.01 to 0.1 percent of stabilizing agents, 0.02 to 0.1 percent of antifoaming agents and 0.1 to 1 percent of emulsion powder. The slurry pressing material has the technical characteristics that the filling performance is good (a pipe is not plugged); the hour intensity is high; the fast construction requirements are met; the bonding with the base surface is firm; the volume stability and durability are high, and the like. The requirements of repeated impact on the roadbed during the train operation without damage can be met; the whole construction method is simple; the speed is high. By using the method, the reinforcement treatment on the existing railway roadbed can be completed in the limited time at the night skylight point of the high-speed railway operation period; the normal driving safety in a next day is not influenced; the requirement of the high-speed railway repair on the time can be met.

Description

technical field [0001] The invention relates to the technical field of high-speed railway embankment maintenance materials, in particular to a special grouting material for emergency repair and reinforcement of a high-speed railway embankment and a grouting method thereof. Background technique [0002] The high-speed railway runs fast and has a large dynamic load. In order to ensure the stability and safety of the high-speed train operation, strict requirements are put forward for the condition of the high-speed railway subgrade. Due to the complexity and diversity of geological conditions, the subgrade foundation is affected by repeated shocks and vibrations during the operation of the train, and uncontrollable settlement will occur in some special areas, and there will be diseases such as emptying, muddying, etc., which will affect the operating efficiency and running of the train. Both comfort and operational safety are adversely affected. Therefore, it is necessary to e...

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): C04B28/06E01B2/00E02D3/12C04B111/70C04B111/72
CPCC04B28/06C04B2111/0075C04B2111/70C04B2111/72C04B2201/52E01B2/00E02D3/12C04B14/062C04B22/143C04B14/06C04B2103/302C04B2103/14C04B2103/22C04B2103/50C04B2103/0068C04B2103/0057
Inventor 孟长江陈仕奇陈占彭志鹏崔国庆倪国章赵勇王亮王伟汪春燕潘昌盛何新辉
Owner 中铁四院集团工程建设有限责任公司
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