Supercharge Your Innovation With Domain-Expert AI Agents!

Alkali-activated slag-based grouting material for semi-flexible pavement as well as preparation method and application thereof

A semi-flexible pavement and grouting material technology, applied in the field of pavement materials, to achieve the effects of controllable setting time, reduction of cement usage, and reduction of CO2 emissions

Active Publication Date: 2022-02-25
GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention proposes an alkali-activated slag-based grouting material for semi-flexible pavement, to solve or at least partially solve the technical problems existing in the prior art

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
  • Alkali-activated slag-based grouting material for semi-flexible pavement as well as preparation method and application thereof
  • Alkali-activated slag-based grouting material for semi-flexible pavement as well as preparation method and application thereof
  • Alkali-activated slag-based grouting material for semi-flexible pavement as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0047] Based on the same inventive concept, the embodiment of the present application also provides a method for preparing the above-mentioned alkali-activated slag-based grouting material for semi-flexible pavement, including the following steps:

[0048] After mixing slag, water glass, fine river sand powder, water retaining agent and coarse river sand, add water and stir to obtain the semi-flexible pavement alkali-activated slag-based grouting material.

[0049] In some embodiments, the slag, water glass, fine river sand powder, water retaining agent, and coarse river sand are mixed and stirred at a rate of less than 100r / min, and the stirring is continued at 1000-1500r / min after adding water to obtain a semi-flexible pavement. Alkali-activated slag-based grouting material.

[0050] Specifically, in some embodiments, after mixing slag, water glass, fine river sand powder, water retaining agent, and coarse river sand at a rate of 10-90r / min and stirring evenly, add 2 / 3 of th...

Embodiment 1

[0055] The embodiment of the present application provides an alkali-activated slag-based grouting material for semi-flexible pavement, including the following raw materials in parts by weight: 75 parts of slag, 15 parts of water glass, 10 parts of fine river sand powder, 0.2 parts of water retaining agent, 40 parts of coarse river sand, 36 parts of water;

[0056] Among them, the slag is made of water-quenched granulated blast furnace slag and ball milled to a particle size of 2-200 μm; the modulus of water glass is 2; the particle size of fine river sand powder is 2-300 μm; the sieve of coarse river sand 0.6mm The pore passing rate is 100%, and the sieve passing rate of 0.075mm is ≤0.2%; the water retaining agent is sodium carboxymethyl starch.

[0057] The preparation method of the alkali-activated slag-based grouting material for the semi-flexible pavement comprises the following steps:

[0058] Mix slag, water glass, fine river sand powder, water retaining agent and coars...

Embodiment 2

[0065] The embodiment of the present application provides an alkali-activated slag-based grouting material for semi-flexible pavements, including the following raw materials in parts by weight: slag, water glass, 20 parts of fine river sand powder, 0.2 parts of water-retaining agent, and 40 parts of coarse river sand , 36 parts of water, the sum of the parts by weight of slag and water glass is 80 parts, and the weight ratio of slag and water glass is 5:1;

[0066] Among them, the slag is made of water-quenched granulated blast furnace slag and ball milled to a particle size of 2-200 μm; the modulus of water glass is 2; the particle size of fine river sand powder is 2-300 μm; the sieve of coarse river sand 0.6mm The pore passing rate is 100%, and the sieve passing rate of 0.075mm is ≤0.2%; the water retaining agent is sodium carboxymethyl starch.

[0067] The preparation method of the alkali-activated slag-based grouting material for semi-flexible pavement is the same as in Ex...

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides an alkali-activated slag-based grouting material for a semi-flexible pavement and a preparation method and application thereof. Slag and water glass are used as gel materials, and the slag is gradually dissolved under the action of the water glass to generate a silicon-oxygen tetrahedron monomer and an aluminum-oxygen tetrahedron monomer; then, the two monomers and a silicon-oxygen tetrahedron generated by dissolving solid water glass are linked and collided to generate an oligomer, and the monomers or the oligomer are further subjected to polycondensation dehydration to form a high polymer with a three-dimensional net-shaped cavity structure, namely inorganic gel; fine river sand powder and coarse river sand are used as fine and coarse aggregates, so that the setting time of the grouting material can be effectively prolonged and crack propagation can be inhibited. The grouting material disclosed by the invention is economical and environment-friendly, and can replace or partially replace a traditional Portland cement grouting material, so that the use amount of cement is reduced, and CO2 emission is reduced. Compared with the existing grouting material, the alkali grouting material disclosed by the invention has the advantages of early strength, rapid hardening, uniform slurry texture, no segregation, no bleeding, controllable setting time, high compressive and flexural strength and shrinkage of less than 0.4% in 7 days.

Description

technical field [0001] The invention relates to the technical field of pavement materials, in particular to an alkali-activated slag-based grouting material for semi-flexible pavement and its preparation method and application. Background technique [0002] The current pavement can be divided into two types, one is rigid cement concrete pavement, and the other is flexible asphalt pavement. Because the cement concrete pavement is easy to crack, driving bumps are gradually replaced by asphalt pavement. With the great changes in the society, the increasing traffic load has intensified the poor durability and service life of asphalt pavement in the bus stations and intersections of urban roads; the toll stations of expressways, the entrance and exit of tunnels; the port roads entering and leaving the docks. Short and other issues. In order to solve the above problems, a new type of pavement structure that combines rigidity and flexibility, that is, semi-flexible pavement, has ...

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): C04B28/26E01C23/09C04B111/70
CPCC04B28/26E01C23/0973C04B2111/70C04B2111/0075C04B2201/50C04B18/142C04B14/068C04B24/38C04B22/002
Inventor 贺艳张帅张洪刚刘乐平张仰鹏陈杰焦晓东谢政专黎碧云江廷荟易可良
Owner GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com