Unlock instant, AI-driven research and patent intelligence for your innovation.

No-shrinkage ultrahigh-strength grouting material and preparation method thereof

A grouting, ultra-high-strength technology used in the chemical field to solve problems such as low compressive strength and flexural strength

Inactive Publication Date: 2014-09-10
SHANGHAI ZHEJIANG TRAFFIC TECH +1
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a non-shrinkage super high-strength grouting material, the non-shrinkage super high-strength grouting material to solve the technical problem of low compressive strength and flexural strength of the grouting material 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
  • No-shrinkage ultrahigh-strength grouting material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A non-shrinkage super high-strength grouting material of the present invention is composed of Portland cement, expansion agent, recycled aggregate and cement water reducer, and the mass percentage of the Portland cement in the grouting material is 30% to 50%. , the mass percentage of the expansion agent in the grouting material is 5.0% to 10.0%, the mass percentage of the recycled aggregate in the grouting material is 44% to 64%, and the cement water reducer is in the grouting material The mass percentage in is 0.5% to 1.0%.

[0017] Further, the cement water reducer is selected from any one of naphthalene water reducer, melamine type water reducer or polycarboxylic acid type water reducer.

[0018] Further, the expansion agent is selected from perburned calcium oxide or perburned calcium sulfate.

[0019] Further, the recycled aggregate is selected from waste concrete blocks or waste slag, and the particle size of the waste concrete blocks and waste slag is less than ...

Embodiment 2

[0023] Inspection: Take 1800g of uniformly stirred mixture, pour it into the mixing pot and start stirring, within 10s, add 12% to 16% of water and stir for 240s, and test according to the items specified in Table 4.1.1 of GB / T50448: the strength test is according to The relevant provisions in the current national standard "Cement Mortar Strength Test Method (ISO Method)" GB / T17671 are implemented. Pour the liquefied grout into the 4cm*4cm*16cm test mold and put it in the standard curing box for 24 hours. When the maintenance pool is maintained until it is broken at all ages, you can get:

[0024] 1d: 50-60Mpa; 3d: 75-85Mpa; 7d: 85-95Mpa; 28d: 100-110Mpa strength.

Embodiment 3

[0025] Example 3 Comparison

[0026] At present, the strength of domestic Portland cement-based grouting materials is generally 60 to 70Mpa technical level, while imported ones can reach 100Mpa, and the price per cubic meter is about 25,000 to 28,000 yuan; while domestic sulphoaluminate cement-based grouting materials have 28d to reach 100Mpa; first of all, we know that the hydration product of sulfoaluminate cement is ettringite crystal, arranged in a columnar structure; there is no natural ettringite in nature, and ettringite will react with carbon dioxide and sulfur dioxide in nature reaction to produce calcium carbonate and calcium sulfate, calcium sulfate will dissolve in water, which will affect the service life of concrete; secondly, during the production process of sulphoaluminate cement, excess sulfur will be discharged into the atmosphere in the form of gas, further polluting Air, reacts with rainwater and returns to the ground in the form of sulfuric acid, aggravati...

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 sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a no-shrinkage ultrahigh-strength grouting material which is composed of the following components in percentage by mass: 30-50% of Portland cement, 5.0-10.0% of expanding agent, 44-64% of regenerated aggregate and 0.5-1.0% of cement water reducing agent. The invention also provides a preparation method of the grouting material. The 28-day compression strength of the no-shrinkage ultrahigh-strength grouting material is up to 110 MPa, the folding strength is greater than that of the secondary grouting material (25 MPa), and the vertical expansion ratio satisfies the requirement in Table 4.1.1 in GB / T50488. The no-shrinkage ultrahigh-strength grouting material can also satisfy the demands for anchor bolt anchor grouting, secondary grouting, concrete structure reconstruction and reinforcement grouting, posttensioned prestressed concrete structure pore grouting and other projects.

Description

Technical field: [0001] The invention relates to the field of chemistry, in particular to building materials, in particular to a grouting material, in particular to a non-shrinkage super high-strength grouting material and a preparation method thereof. Background technique: [0002] With the continuous development of social economy, there are more and more various super-large equipment and super high-rise buildings, and the mileage of high-speed railways is getting longer and longer. However, the compressive strength and flexural strength of the grouting materials in the prior art are low, so It cannot meet the engineering requirements for basic materials. Invention content: [0003] The object of the present invention is to provide a non-shrinkage super high-strength grouting material, which solves the technical problem of low compressive strength and flexural strength of the grouting material in the prior art. [0004] The non-shrinkage ultra-high-strength grouting mate...

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): C04B28/04
Inventor 陈国良陈翔戴建平冯建明李璟周俊元张璞
Owner SHANGHAI ZHEJIANG TRAFFIC TECH