High-performance hydraulic concrete interface treating agent and preparation method thereof

The invention relates to a high-performance hydraulic concrete interface treating agent and a preparation method thereof, and belongs to the technical field of building materials, the high-performance hydraulic concrete interface treating agent is composed of superfine cement, a polymer emulsion, a superfine active mineral admixture, an expanding agent, a pore suppository, a defoaming agent and a nano flexibilizer, the treating agent is hydrophilic, environment-friendly and non-toxic; spraying can be achieved, and construction is easy, convenient and rapid; in a humid environment, the water permeable and pressure-bearing performance is high, the water permeable and pressure-bearing performance is high, the water permeable and pressure-bearing performance is coordinated with linear deformation of a base body, cracking resistance and freezing resistance are achieved, certain deformation toughness is achieved, the problem that a protection and repair interface of new and old concrete (mortar) in a hydraulic engi