Underwater epoxy resin grouting material

Abstract

A submerged epoxy resin grouting material which uses by weight of 100 parts of liquid epoxy resin with epoxide value of 0.51-0.54 as the host, and uses 5-50 parts of propanone, 10-60 parts of furfuraldehyde as the viscosity-reducing agent in grouting construction process and reactants in curing procedure, by admission of 10-60 parts of benzaldehyde hexamethylene diamine condensate or benzaldehyde m-phenylenediamine condensate and 0.5-5 parts of silanes through moistening, penetration and intensifier bonding to prepare the material, which can be suitable not only for dry and humid environment, but also for water containing condition.

Description

technical field [0001] The invention relates to a grouting material for foundation consolidation, anti-seepage and reinforcement of concrete cracks in civil and construction engineering, in particular to a grouting material mainly used for consolidation, anti-seepage, and reinforcement of rock foundations in large-scale projects and for insufficient cement grouting materials and cracks in concrete buildings Treated underwater epoxy grouting material. Background technique [0002] Grouting is the grout prepared from specific materials, and it is poured into the pores of the ground or the cracks of concrete components with pressure feeding equipment to make it diffuse, fill, gel or solidify, so as to achieve the purpose of reinforcement or anti-seepage and plugging. Engineering safety. Because cement grouting has the advantages of high stone body strength, wide source of materials, low price, convenient storage and transportation, and relatively s...

AI Technical Summary

Problems solved by technology

[0006] To sum up, the existing epoxy resin grouting materials also have the following problems: (1) The grout cannot be applied to water conditions

In order to adapt to the use under the condition of water, some slurry materials only one-sidedly pursue the improvement of the hydrophilicity of the slurry material, because the general-purpose bisphenol A epoxy resin is insoluble in water, but the amine curing agent is soluble in water and is diluted , it will affect the normal progress of the curing reaction; (2) The surface tension and contact angle of the slurry are high, and its wetting and infiltration ability is low, so it is not suitable for the fractured zone of the rock foundation with low permeability, the mud interlayer and the fine cracks in the concrete. Treatment, reinforcement of dam foundation anti-seepage curtain; (3) The viscosity of the slurry is high, the viscosity increases too fast, the initial setting time is too long, the early calorific value is too large, the strength increases too slowly, and the operation is relatively complicated; (4) The slurry The materials contain toxic, irritating and corrosive raw materials such as ethylenediamine and diethylenetriamine; (5) the cost performance is low

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