Epoxy grouting material for glass fiber sleeve reinforcing system and preparing method of epoxy grouting material

Abstract

The invention provides an epoxy grouting material for a glass fiber sleeve reinforcing system. The grouting material is mainly formed by mixing a component A, a component B and a component C according to the mass ratio of 2 to 1 to 2-10. The component A is composed of bisphenol A type epoxy resin, reactive diluents, flexibilizer, silane coupling agents, defoaming agents, flatting agents and active micro silicon powder. The component B is a cashew phenol modified phenolic aldehyde amine curing agent and the component C is composed of quartz sand, coal ash and blanc fixe. The epoxy grouting material can be normally cured in a dry environment, a humid environment and a complete water environment, has extremely good mobility and is capable of being normally grouted in seams with the width of 1.5 cm, and no layering phenomenon is generated after grouting. The physical and mechanical properties of the grouting material meet the requirement of self-leveling mortar, grouting can be conducted at one place, the grouting material can conduct self-leveling, the formula of the grouting material is specially designed, and the grouting material has extremely good adhesivity on the surfaces of both the humid structure and the dry structure and is high in intensity and good in tenacity.

Description

Technical field [0001] The invention relates to an epoxy grouting material used in a glass fiber sleeve reinforcement system and a preparation method thereof, and belongs to the field of grouting materials for structural repair and reinforcement. Background technique [0002] Epoxy grouting material is a new type of grouting material that can replace cement grouting material. Compared with cement slurry, epoxy grouting material has the following advantages: [0003] 1. After curing, the shrinkage rate is extremely low, and the bonding with the structure is dense and firm; [0004] 2. Good toughness, can resolve long-term vibration load; [0005] 3. Corrosion resistant, can withstand long-term contact corrosion with chemicals such as acid, alkali, salt, grease, etc.; [0006] 4. Creep resistance, long-term use without plastic deformation under the harsh physical conditions of -40℃ to +80℃ alternate freezing and thawing, vibration and compression; [0007] 5. The internal grouting operati...

AI Technical Summary

Problems solved by technology

[0009] However, the existing domestic grouting materials are only suitable for dry grouting environments, and grouting materials cannot be used for normal grouting in wet or even completely water environments. The following points can be summed up:

[0010] 1. The grouting material cannot be cured normally under water, or the grouting material is whitened after curing, which affects the strength;

[0011] 2. The grouting material cannot infiltrate the structural layer well, or the bond with the structural layer is not firm or dense;

[0012] 3. The fluidity of the grouting material is poor, and the grouting operation is difficult;

[0013] 4. The self-leveling of the grouting material is poor, and the liquid surface of the grouting material cannot be leveled in the gap

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