Grouting reinforcement material applied to rapid repair of pavement structure, and preparation method and application

A technology of grouting reinforcement and pavement structure, which is applied in the direction of roads, roads, pavement details, etc., can solve the problems of early mechanical performance of unseen polymers, incomplete performance of material properties, etc., to achieve environmental protection, easy operation, The effect of strong penetration

Inactive Publication Date: 2020-11-24
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to improve the above technical problems in the prior art, geopolymer materials are used as geopolymer-based grout in grouting construction, but the current research on geopolymer-based grout has the problem of incomplete performance of the material itself
At the same time, in the rapid repair of highway pavement structure, materials require high mechanical properties within a few hours. At present, there is no corresponding early mechanical performance of geopolymers. In order to promote the comprehensiveness and further exploration of geopolymer properties and application research

Method used

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  • Grouting reinforcement material applied to rapid repair of pavement structure, and preparation method and application
  • Grouting reinforcement material applied to rapid repair of pavement structure, and preparation method and application

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Embodiment 1

[0038] A grouting reinforcement material for rapid repair of pavement structure, the grouting reinforcement material includes geopolymer slurry, and the mass ratio formula of geopolymer slurry includes A component and B component, A component and B component Equal mass ratio mixing, the A component includes sodium silicate solution 31.5%, sodium hydroxide 4.2%, water 10.9%, amorphous nano-silicon dioxide 1.0%; B component includes metakaolin 20.9%, cement 14%, Slag 17.5%.

[0039] More specifically, the cement is superfine grouting cement with a specific surface area greater than 1200m 2 / kg. The slag is high-calcium slag with S95 grade, and the specific surface area is greater than 1200m 2 / kg. Metakaolin particle size specific surface area is greater than 1200m 2 / g. Amorphous nano silica, specific surface area greater than 1200m 2 / g. The Baume degree of sodium silicate solution is 38°.

Embodiment 2

[0041] A grouting reinforcement material for rapid repair of highway pavement structure, the grouting reinforcement material includes geopolymer slurry, and the mass ratio formula of geopolymer slurry includes A component and B component, A component and B group Mixing in equal mass ratios, the A component includes 35.5% of sodium silicate solution, 6.2% of sodium hydroxide, 14.9% of water, 2% of amorphous nano-silicon dioxide; B component includes 16.9% of metakaolin, 11% of cement , slag 13.5%.

[0042] More specifically, the cement is superfine grouting cement with a specific surface area greater than 1200m 2 / kg. The slag is high-calcium slag with S95 grade, and the specific surface area is greater than 1200m 2 / kg. Metakaolin particle size specific surface area is greater than 1200m 2 / g. The specific surface area of ​​amorphous nano-silica is greater than 1200m 2 / g. The Baume degree of sodium silicate solution is 45°.

Embodiment 3

[0044] The grouting reinforcement material includes geopolymer slurry, the mass ratio formula of the geopolymer slurry includes component A and component B, and components A and B are mixed in equal mass ratios, and the component A includes sodium silicate Solution 33.5%, sodium hydroxide 5.2%, water 12.9%, amorphous nano-silica 1.5%; B component includes metakaolin 18.9%, cement 12.5%, slag 15.5%. More specifically, the parts by weight of each component in the geopolymer slurry are, component A (34.17 parts by weight of sodium silicate solution, 5.304 parts by weight of sodium hydroxide, 13.158 parts by weight of water, 1.53 parts by weight of amorphous nano silicon dioxide parts) and B component (slag 15.81 parts by weight, metakaolin 19.278 parts by weight, cement 12.75 parts by weight).

[0045] More specifically, the cement is superfine grouting cement with a specific surface area greater than 1200m 2 / kg. The slag is high-calcium slag with S95 grade, and the specific s...

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Abstract

The invention discloses a grouting reinforcement material applied to rapid repair of a pavement structure. The grouting reinforcement material comprises geo-polymer mortar, wherein the formula of thegeo-polymer mortar in mass ratio comprises a component A and a component B, the component A and the component B are mixed in an equal mass ratio, the component A comprises 31.5%-35.5% of a sodium silicate solution, 4.2%-6.2% of sodium hydroxide, 10.9%-14.9% of water and 1.0%-2% of amorphous nano silicon dioxide; the component B comprises 16.9%-20.9% of metakaolin, 11%-14% of cement and 13.5%-17.5%of slag; and the total proportion added up by all the components in the component A and the component B is 100%. The material is simple in preparation technology and low in cost, has the advantages of being environment-friendly and efficiency and capable of resource recycling, and has wide application prospect.

Description

technical field [0001] The invention relates to the technical field of building structure repairs, in particular to a grouting reinforcement material for rapid repair of pavement structures, a preparation method and application thereof. Background technique [0002] Aiming at the structural defects and diseases of highway pavement, grouting is often used in the prior art for treatment. For example, the published prior art patent application number: CN201410235092.1, the name of the invention: a flat hole grouting roadbed reinforcement method and structure without damaging the road surface, discloses a flat hole grouting roadbed reinforcement method that does not damage the road surface and structure, the steps are: A. Determine the location of the grouting holes; B. Drill horizontal or oblique grouting holes, and the drilling angle is perpendicular to the main direction of subgrade failure; C. Drill the grouting holes alternately; D. Grouting by drilling inwards around the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00E01C11/00
CPCC04B28/006C04B2111/0075E01C11/005C04B12/04C04B22/062C04B22/002C04B14/062C04B14/106C04B7/00C04B18/141Y02P40/10
Inventor 赵乙丁吴发红史尧孙锐
Owner YANCHENG INST OF TECH
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