Concrete coating composition and preparation method thereof

The invention discloses a concrete coating composition and a preparation method thereof, the concrete coating composition comprises an epoxy resin primer, an epoxy resin quaternary ammonium salt, a geopolymer and a coupling agent, the mass ratio of the epoxy resin primer to the epoxy resin quaternary ammonium salt to the geopolymer to the coupling agent is 64-88: 1-5: 10-30: 1, the epoxy resin quaternary ammonium salt comprises triethylamine hydrochloride and epoxy resin, the geopolymer comprises metakaolin and an alkaline activator, and the alkaline activator comprises a sodium metasilicate solution and a sodium hydroxide solution. The problem that the service life of some existing concrete protective layer coatings is short is solved. 本发明公开了一种混凝土涂层组合物及其制备方法，包括：环氧树脂底漆、环氧树脂季铵盐、地质聚合物和偶联剂，所述环氧树脂底漆、所述环氧树脂季铵盐、所述地质聚合物和所述偶联剂的质量比为64～88：1～5：10～30：1，所述环氧树脂季铵盐包括三乙胺盐酸盐和环氧树脂，所述地质聚合物包括偏高岭土和碱性活化剂，所述碱性活化剂包括偏硅酸钠溶液和氢氧化钠溶液。本发明解决了现有的一些混凝土保护层涂层的使用寿命较短的问题。