The invention provides a preparation method for a concrete
silane paste
waterproofing agent, and relates to the preparation method for a concrete
silane waterproofing agent. The invention aims to solve the technical problems of
coating failure due to capability of breaking
surface coating during discharging of internal water of a protective
coating on the surface of concrete, and incapability of guaranteeing self permeability of a concrete material in the prior art. The preparation method provided by the invention comprises the following steps: subjecting deionized water and a compound emulsifier to stirring until the compound emulsifier is completely dissolved, then adding amino
silicon oil and
triethylamine, adding a
silane monomer, then carrying out stirring, carrying out natural cooling to
room temperature, adding
phosphoric acid until the mixture is neutral, adding a stabilizing agent and a sterilizing agent, and carrying out emulsification with a high-speed emulsifying
machine. The preparation method provided by the invention uses water as a
solvent, does not use a volatile
solvent, and is free of harm to the environment and human; and compared with a pure silane
monomer, the
waterproofing agent has the advantages of little volatilization, high
utilization rate, large
penetration depth, simple process and good waterproof effect. The waterproofing agent provided by the invention has good stability, and has uniform color, no purity, no stratification, no floating oil and no obvious precipitate after standing for 4 months.