Epoxy resin fiber reinforced concrete for repair and preparation method thereof

Abstract

The invention relates to an epoxy resin fiber reinforced concrete for repair and preparation and application methods thereof. The epoxy resin fiber reinforced concrete is prepared from the following raw materials in percentage by weight: 55-70% of refined quartz sands, 33-17% of epoxy resin, 11-9% of curing agent and 1-4% of basalt fiber chopped strands. The preparation method comprises the following the following steps: by using the refined quartz sands as aggregates and epoxy resin as a gel material, adding the basalt fiber chopped strands; and mixing according to an appointed proportion. The product provided by the invention is extremely high in viscosity, can be well combined with defected concrete of a base layer and is not easy to peel and bulge. The strength can reach the strength grade of concrete C50. The concrete is simple to manufacture, can be prepared on site and needs not to be heated on site. Epoxy resin needs not to be diluted, and the construction steps are saved and the concrete is convenient to use while no diluents are introduced. The product is short in curing time, and comes into use in 24 hours after repair. The concrete is strong in adaptability, can be suitable for repairing defects of thick and thin layers of a terrace at the same time and can be used for repairing various defects of terrace such as pits formed by collision or high-low difference due to differential settlement of the concrete terrace.

Description

technical field [0001] The present invention relates to a kind of epoxy resin fiber reinforced concrete and its preparation method, especially relates to a new type of epoxy resin fiber reinforced concrete for repairing which can be applied to both thick layer and thin layer defect repair, has short curing time and high viscosity. its preparation method. Background technique [0002] At present, in the floor construction, the electromechanical equipment is generally installed after the concrete pouring is completed. This operation is very easy to cause damage to the concrete floor, such as the floor cracking caused by uneven settlement and the level difference. It is necessary to use special repair concrete Make effective repairs. At present, epoxy resin repairing mortar has become an effective repairing concrete mortar due to its high chemical resistance, high erosion resistance and high cavitation resistance, but there are some problems in the production and practical pro...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an epoxy resin fiber-reinforced concrete for repair and its preparation method, which solves the problem that the existing epoxy resin repair mortar formula is complicated, the epoxy resin needs to be diluted before it can be used, some formulas also need heating auxiliary mixing, and the production process Many, time-consuming and labor-intensive problems; it also solves the problem that the existing epoxy resin repair mortar is easy to peel, bulge, and bond weakly when used for floor defects less than 5cm to be repaired, and it is easy to cause concrete strength at the floor defect treatment place Insufficient, affecting the appearance quality and service life of the formed floor, and the problem of poor application effect; in addition, it also solves the problem that the existing repair technology has a long curing time, and it usually takes 3 to 7 days to be put into normal use after the repair is completed, which delays other follow-up processes technical problems that caused difficulties in the construction of the floor surface

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