Concrete repairing material

Abstract

The invention discloses a concrete repairing material. The concrete repairing material is prepared from the following components in percentage by mass: 40 to 50 percent of ultrafine cement, 2 to 4 percent of micro-silicon powder, 40 to 45 percent of redispersible latex powder, 4 to 6 percent of Huaqiansu (special master batch for a grouting material), 0.05 to 0.1 percent of polyvinyl alcohol 2488,0.2 to 0.4 percent of hydroxypropyl methylcellulose, 0.05 to 0.2 percent of polyacrylamide, 0.1 to 0.5 percent of ammonium ferrous sulfate, 2 to 4 percent of tung oil and 0.2 to 0.5 percent of methylphenylcyclotrisiloxane. According to the concrete repairing material disclosed by the invention, the ammonium ferrous sulfate, the tung oil, the methylphenylcyclotrisiloxane, the ultrafine cement, theredispersible latex powder and other raw materials are mixed, so that the problems of an existing concrete repairing material that the quality cannot be ensured, the bonding strength with a previousconcrete bonding surface is poor, a whole block is easy to peel off and the like can be solved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a concrete repair material. Background technique [0002] In today's world, structural failures or building function failures caused by various reasons not only affect people's normal life but also cause huge economic losses. Among them, cracks, shedding, and leakage of cement concrete structures are the most common maintenance of concrete products. question. There are more and more concrete repair materials that have been successfully developed and put into the market, mainly including inorganic and organic repair materials. Among them, epoxy resin-based repair materials or (meth)acrylic repair materials have accounted for more than half of the organic concrete repair materials. Although these concrete repair materials have excellent adhesion to dry concrete, they have the following problems: When it is wet or used in a humid environment such as sewers, ...

AI Technical Summary

Problems solved by technology

Among them, epoxy resin-based repair materials or (meth)acrylic repair materials have accounted for more than half of the organic concrete repair materials. Although these concrete repair materials have excellent adhesion to dry concrete, they have the following problems: When wet or used in a humid environment such as sewers, the required adhesiveness cannot be obtained

The repair material has poor adhesion to the original concrete surface, and the adhesion of the bonding surface is poor. The surface needs to be treated to expose fresh concrete. The surface treatment is time-consuming and laborious, and the quality cannot be guaranteed, which is easy to produce The whole piece peels off, and at the same time, the repaired mortar will crack due to improper proportioning and maintenance

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