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A kind of ultra-fine mineral powder grouting agent for grouting

A technology for grouting of mineral micropowder and pores is applied in the field of ultra-fine mineral micropowder grouting agent, which can solve the problems of high dosage sensitivity and poor overall stability, and achieve the effects of reducing risks, low cost and improving service life.

Active Publication Date: 2017-02-08
GUANGDONG PROVINCIAL CHANGDA HIGHWAY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the existing grouting agent uses organic polymers as the water-retaining and viscosity-increasing component, which is sensitive to the dosage and has poor overall stability, the present invention provides an ultra-fine mineral powder grouting agent for channel grouting Agent, which is based on active minerals, mixed with inorganic ultra-fine mineral powder instead of organic polymers as a water-retaining and viscosity-increasing component of the grouting agent. Other functional components include: water-reducing components, retarding components, swelling Components, defoaming components, the grouting agent is corrosion-resistant, high strength, excellent quality stability

Method used

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  • A kind of ultra-fine mineral powder grouting agent for grouting

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 52 parts of fly ash; 43 parts of ultrafine mineral powder; polycarboxylate superplasticizer: 2.4 parts;

[0026] 0.5 parts of powder defoamer; 2 parts of plastic expansion agent; 0.1 part of retarder

[0027] Construction mix ratio: on-site grouting agent, conch P.O42.5R cement, and water in a mass ratio of 1:10:3.08.

Embodiment 2

[0029] 47 parts of fly ash; 45 parts of ultra-fine mineral powder; melamine-based superplasticizer: 5.3 parts;

[0030] 0.5 parts of powder defoamer; 2 parts of plastic expansion agent and 0.2 parts of retarder

[0031] Construction mix ratio: on-site grouting agent, conch P.O42.5R cement, and water in a mass ratio of 1:10:3.08.

Embodiment 3

[0033] 50 parts of fly ash; 44.5 parts of superfine mineral powder; polycarboxylate superplasticizer: 2.6 parts;

[0034] Powder defoamer: 0.5 parts; plastic expansion agent: 2.2 parts, retarder: 0.2 parts

[0035] Construction mix ratio: on-site grouting agent, moistening P.O42.5R, and water in a mass ratio of 1:10:3.08.

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Abstract

The invention relates to a superfine mineral micro powder grouting agent for duct grouting, belonging to the technical field of chemical compositions. The grouting agent comprises the following components in parts by weight: 45-55 parts of active mineral, 40-50 parts of superfine mineral micro powder, 1-8 parts of water reducing component, 1-4 parts of expansion component, 0.1-0.4 part of retarding component and 0.3-0.8 part of defoaming component. The grouting agent is anticorrosive, high in strength, excellent in quality stability, relatively low in raw material cost and significant in economic benefit.

Description

technical field [0001] The invention relates to an ultrafine mineral micropowder grouting agent used for channel grouting, and belongs to the technical field of chemical composition production. Background technique [0002] The quality of prestressed pipeline grouting materials has always been a major technical problem in the current transportation infrastructure construction. As early as the 1980s, there were prestressed concrete bridges in Europe that collapsed due to corrosion of prestressed steel bars. In the investigation of the grouting situation, there are also different degrees of beam structure deterioration and damage caused by local defects in the pipeline slurry. In view of the common problems of domestic grouting materials such as large water-cement ratio, easy segregation, large shrinkage, bleeding, low strength and easy agglomeration to block pipelines, the Ministry of Communications, the Ministry of Railways and industry experts have analyzed the consistency ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/24C04B24/12C04B24/04
Inventor 苏慈蔡炎标陈晓芳李红辉张伟康宏张东曾
Owner GUANGDONG PROVINCIAL CHANGDA HIGHWAY ENG
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