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A geopolymer grout

A technology of geopolymers and grouting materials, which is applied in the direction of cement production, etc., can solve the problems of restricting the application of geopolymers, and achieve the effects of superior durability, low cost and wide application range

Active Publication Date: 2019-04-02
CHENGDU JIAXIN TECH +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current geopolymer grouting materials still have the following shortcomings, which limit the application of geopolymers in the field of grouting materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Preparation of geopolymer grout:

[0017] Take 30kg stone powder, 40kg fly ash, 15kg microsilica powder, 25kg slag powder, 10kg water glass, 5kg sodium hydroxide, 1kg sugar calcium, 4kg redispersible latex powder, 2kg polycarboxylate water reducer, 2kg alkyl sulfonate Sodium phosphate, 2kg aluminum stearate, 10kg phenolic resin, 0.5kgN, N-dimethylaniline, 0.5kg methyl ethyl ketone peroxide, 1kg sodium polyacrylate, 0.5kg triethanolamine, 0.5kg citric acid are placed in a blender, stirred and mixed uniform, to obtain a mixture; put the mixture in a mixer and add 60kg of water, stir and mix evenly, to obtain a geopolymer grouting material.

[0018] After testing, the grouting material prepared in this example has a 1d compressive strength of 24.3MPa, a fluidity of 16s, an initial setting time of 20 minutes, a final setting time of 50 minutes, and a grade 1 impermeability. The shrinkage rate is less than 0.03% at 80°C-100°C.

Embodiment 2

[0020] Preparation of geopolymer grout:

[0021] Take 20kg stone powder, 30kg fly ash, 10kg microsilica powder, 25kg slag powder, 5kg water glass, 5kg sodium hydroxide, 0.5kg sugar calcium, 3kg redispersible latex powder, 1kg polycarboxylate superplasticizer, 1kg alkyl Sodium sulfonate, 1kg aluminum stearate, 10kg phenolic resin, 0.5kgN, N-dimethylaniline, 0.5kg methyl ethyl ketone peroxide, 0.5kg sodium polyacrylate, 0.5kg triethanolamine, 0.5kg citric acid are placed in the mixer, Stir and mix evenly to obtain a mixture; put the mixture in a mixer and add 50kg of water, stir and mix evenly to obtain a geopolymer grouting material.

[0022] After testing, the grouting material prepared in this example has a 1d compressive strength of 22.1MPa, a fluidity of 17s, an initial setting time of 23 minutes, a final setting time of 53 minutes, a grade 1 impermeability, and a shrinkage rate of less than 0.03% at 80°C-100°C. .

Embodiment 3

[0024] Preparation of geopolymer grout:

[0025] Take 40kg of stone powder, 45kg of fly ash, 25kg of micro silica fume, 35kg of slag powder, 10kg of water glass, 10kg of sodium hydroxide, 1kg of sugar calcium, 5kg of redispersible latex powder, 3kg of polycarboxylate superplasticizer, and 3kg of alkylsulfonate Sodium phosphate, 3kg aluminum stearate, 15kg phenolic resin, 1kgN, N-dimethylaniline, 1kg methyl ethyl ketone peroxide, 1kg sodium polyacrylate, 1kg triethanolamine, 1kg citric acid are placed in a blender, stirred and mixed evenly, and mixed Material; put the mixed material in a mixer and add 80kg of water, stir and mix evenly to obtain geopolymer grouting material.

[0026] After testing, the grouting material prepared in this example has a 1d compressive strength of 23.5 MPa, a fluidity of 18s, an initial setting time of 21 minutes, a final setting time of 51 minutes, and a grade 1 impermeability. The shrinkage rate is less than 0.03% at 80°C-100°C.

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Abstract

A geopolymer grouting material is prepared from, by weight, 20-40 parts of stone flour, 30-45 parts of fly ash, 10-25 parts of silicon micro-powder, 25-35 parts of mineral slag powder, 5-10 parts of an alkali exciting agent, 5-10 parts of sodium hydroxide, 0.5-1 part of sugar calcium, 3-5 parts of re-dispersible latex powder, 1-3 parts of a polycarboxylic water reducer, 1-3 parts of sodium alkane sulfonate, 1-3 parts of aluminum stearate, 10-15 parts of phenolic resin, 0.5-1 part of N,N-dimethylaniline, 0.5-1 part of methylethyl ketone peroxide, 0.5-1 part of sodium polyacrylate, 0.5-1 part of triethanolamine and 0.5-1 part of citric acid. The 1d strength of the prepared grouting material is not less than 20.0 MPa, the flowability is not more than 20 s, the initial setting time is not less than 25 min, and the final setting time is not more than 60 min. The grouting material is widely suitable for rapid repairing of roads, underside grouting of cement concrete pavement soft base processing, bridge reinforcing and crack repairing, deep curtain grouting, lower margin bolt anchoring and other engineering positions. Compared with traditional cement-based grouting materials, the grouting material disclosed in the invention has the advantages of low cost, good corrosion resistance, good heatproof stability, good erosion resistance and good durability.

Description

technical field [0001] The invention belongs to the technical field of inorganic composite materials, and relates to a geopolymer grouting material and a preparation method thereof. Background technique [0002] Geopolymer is a new type of aluminosilicate formed by the reaction of active aluminosilicate materials (metakaolin, clay, slag, fly ash, silica fume, etc.) with strong alkali or strong alkali silicate solution. Salt inorganic gelling material. In 1978, the famous French scientist Davidovits first named this material geopolymer and proposed the reaction mechanism of geopolymer. Due to the advantages of rapid hardening and early strength, corrosion resistance, environmental protection, high temperature resistance and good durability, geopolymers are widely used in construction materials, traffic repairs, heavy metal ion adsorption, nuclear waste treatment and other fields. In recent years, due to the high cost of cement-based grouting materials and chemical grouting ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00
CPCC04B28/006C04B2111/70C04B2201/50C04B14/02C04B18/08C04B18/143C04B22/08C04B22/062C04B24/38C04B2103/0057C04B2103/302C04B24/16C04B24/08C04B24/302C04B24/121C04B24/008C04B24/26C04B24/122C04B24/06Y02P40/10
Inventor 刘建均杨杨
Owner CHENGDU JIAXIN TECH
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