Environmentally-friendly high-seepage epoxy grouting material and preparation method and application thereof

An epoxy grouting, high-penetration technology, applied in protection devices, infrastructure repair, construction, etc., can solve the problems of inability to deal with cracks, decreased mechanical properties of materials, and high cost of diluents, and achieves simple and convenient preparation and construction technology. , good mechanical properties, excellent permeability effect

Inactive Publication Date: 2012-11-14
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of this kind of diluent is high, and the amount of addition should not be too large, generally within 20% of the resin, otherwise the mechanical properties of the material will drop sharply
Therefore, the diluting effect of this type of reactive diluent on epoxy resin is far inferior to that of furfural-acetone system, and the viscosity of the prepared slurry is generally above 200mPa·s, which cannot treat fine cracks.

Method used

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  • Environmentally-friendly high-seepage epoxy grouting material and preparation method and application thereof
  • Environmentally-friendly high-seepage epoxy grouting material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of activator: mix 25 parts by mass of diethylenetriamine, 20 parts by mass of p-methoxyphenol and 20 parts by mass of formaldehyde (mass percentage 37%, the same below), add catalyst NaOH (the total amount of the aforementioned substances used 1% of the mass), heated to 40°C for 20 hours under stirring, and then depressurized and fully dehydrated to obtain the activator.

[0035] (2) Preparation of environment-friendly high-permeability epoxy grouting material:

[0036] Liquid A: 50 parts by mass of epoxy resin E44, 30 parts by mass of benzaldehyde, 30 parts by mass of acetone, 10 parts by mass of octyl glycidyl ether and 3 parts by mass of stearic acid were mixed and obtained;

[0037] Liquid B: 12 ​​parts by mass of diethylenetriamine, 6 parts by mass of activator, 1 part by mass of γ-aminopropyltrimethoxysilane and 3 parts by mass of 2,4,6-tris(dimethylamino)phenol ;

[0038] Mix liquid A and liquid B during use to obtain a high-permeability and hig...

Embodiment 2

[0040] (1) Preparation of activator: mix 45 parts by mass of diethylenetriamine, 25 parts by mass of p-cresol, 5 parts by mass of p-aminophenol and 80 parts by mass of formaldehyde, add catalyst potassium hydroxide (the total mass of the aforementioned substances used 1%), heated to 50 ° C under stirring for 18 hours, and then depressurized and fully dehydrated to obtain the activator.

[0041] (2) Preparation of environment-friendly high-permeability epoxy grouting material:

[0042] Liquid A: 40 parts by mass of epoxy resin E51, 30 parts by mass of benzaldehyde, 30 parts by mass of methyl ethyl ketone, 10 parts by mass of ethylene glycol diglycidyl ether and 1 part by mass of polyethylene glycol monostearate were mixed evenly;

[0043] Liquid B: obtained by mixing 15 parts by mass of triethylenetetramine, 8 parts by mass of an activator, 3 parts by mass of γ-aminopropyltriethoxysilane and 6 parts by mass of triethanolamine;

[0044] Mix liquid A and liquid B during use to ...

Embodiment 3

[0046] (1) Preparation of activator: same as step (1) of Example 1.

[0047] (2) Preparation of environment-friendly high-permeability epoxy grouting material:

[0048] Liquid A: 40 parts by mass of epoxy resin E44, 30 parts by mass of methylbenzaldehyde, 15 parts by mass of acetone, 20 parts by mass of 1,4-butanediol diglycidyl ether and 2 parts by mass of ethylene glycol monostearate Mixed to get;

[0049]Liquid B: obtained by mixing 15 parts by mass of tetraethylenepentamine, 6 parts by mass of activator, 1 part by mass of γ-glycidyl etheroxypropyltrimethoxysilane and 5 parts by mass of dimethyl-p-methylaniline;

[0050] Mix liquid A and liquid B during use to obtain a high-permeability and high-strength epoxy grouting material.

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Abstract

The invention discloses an environmentally-friendly high-seepage epoxy grouting material for seepage-proofing and reinforcement of a large geotechnical engineering foundation and a preparation method and application thereof. The environmentally-friendly high-seepage epoxy grouting material comprises the following components in parts by mass: 30-60 parts of epoxy resin, 5-10 parts of activating agent, 30-80 parts of carbonyl compound, 5-20 parts of active diluting agent, 10-20 parts of polyamine A, 1-3 parts of silane coupling agent, 0-3 parts surfactant and 1-6 parts of accelerant. In the epoxy grouting material, furfural with high toxicity is eliminated, damage to human body and the environment is reduced, and epoxy slurry is more environmentally-friendly; and simultaneously, the superior permeability, high mechanical property as well as easy and convenient preparation process and construction process of furfural-acetone system slurry are kept.

Description

technical field [0001] The invention relates to an environment-friendly chemical grouting material, in particular to an environment-friendly high-permeability epoxy chemical grouting material used for anti-seepage and reinforcement of large geotechnical engineering foundations, a preparation method and application thereof. Background technique [0002] Epoxy resin has the characteristics of strong adhesive force, can be cured at room temperature, small curing shrinkage, high mechanical properties and good corrosion resistance, so it is widely used in electronics, machinery, construction as adhesives, coatings, grouting materials, etc. and many other fields. Epoxy resin chemical grouting material is currently the most widely used and the largest amount of reinforcing grouting material. Due to the high viscosity of epoxy resin itself, it is generally necessary to add active diluent when used as a grouting material. Furfural-acetone system reactive diluent has become the most...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L63/02C08L63/04C08G59/62C08G59/56C08G59/20E02D31/02E02D37/00
Inventor 史珺梁利岩何泳生
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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