Epoxy resin material for concrete joint repair and waterproofing and preparation method thereof

Abstract

The invention discloses an epoxy resin material for repairing and waterproofing of concrete seam and a preparation method thereof, wherein the epoxy resin material is composed of a component A, a component B and a filling agent. The component A includes, by weight, 72-75 parts of epoxy resin, 18-20 parts of an active diluent, 10-15 parts of a toughening agent, 3 parts of a silane coupling agent, 0.5-0.7 parts of an anti-oxidizing agent and 0.5-1 part of an ultraviolet light absorber; the component B includes, by weight, 18-20 parts of an A-type curing agent, 23-25 parts of a B-type curing agent, 7-10 parts of a toughness curing agent, 2-5 parts of an accelerant and 15-30 parts of white carbon black; and the filling agent includes, by weight, 0.3-0.5 parts of aramid fiber and 0.2-3 parts of an inorganic pigment. The weight ratio of the component A to the component B is 100:50. The epoxy resin material is convenient to process and use, is strong in adhesive capacity, can satisfy pavement stability, is appropriate in toughness, has the effects of water loss resistance and fatigue resistance, is strong in color weather resistance, is long in service life and is stable in properties.

Description

technical field [0001] The invention belongs to the field of cementing materials for roads, and in particular relates to an epoxy resin material used for repairing and sealing concrete joints and a preparation method thereof. Background technique [0002] With the further advancement of the urbanization process, the development space of underground engineering is more and more extensive, followed by the waterproof problem of underground engineering, which seriously affects the quality of engineering, and the joints of concrete deformation are even more difficult for underground engineering to prevent leakage. Due to the constant movement and change of deformation joints, and the influence of waterproof design theory, waterproof materials, and construction technology, deformation joints are prone to water leakage, and leakage plugging of deformation joints has always been the most troublesome problem. [0003] In actual construction, the construction unit generally uses a rig...

AI Technical Summary

Problems solved by technology

However, repeated water seepage also exists in the application of concrete deformation joint repair water stop

[0005] There are three reasons for the failure of repairing deformed concrete joints: 1. Rigid materials cannot meet the needs of deformed joints; 2. Polyurethane has enough deformation but not enough strength to produce repeated leaks soon and cannot meet the needs of deformed joints; 3. The existing Although the elastic epoxy resin material solves the problem of strength, there are also several common problems a / its deformation is not large enough to meet the needs of deformed joints b / because the curing of epoxy resin is a cohesive shrinkage phenomenon, so the curing shrinkage is irresistible, Although engineers and technicians use solvent-free active materials to participate in the curing reaction of epoxy resin, the degree of curing shrinkage is only reduced, which also poses a problem for grouting and waterproof construction; it is urgent to develop an effective material for underground engineering deformation joint repair and waterproofing , it is required to have the advantages of large enough deformation, strong cohesive force, and ability to follow the arbitrary deformation of concrete joints, etc.

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