Two-component mixed coating composition and coating film forming method

[PROBLEMS] To provide a two-component mixed paint composition capable of forming a relatively thick and highly weather-resistant transparent coating film on a vertical surface of a concrete structure and its two-component mixed type. Providing a coating composition. A two-component mixed coating composition comprising a main agent (A) and a curing agent (B) used to form a transparent coating film covering the surface of a concrete structure, the main agent (A) ) Is a (meth) acrylic polymer (a) having at least one crosslinkable silyl group, a hydrogenated bisphenol type epoxy resin (b), an ultraviolet absorbing compound (c), a hindered amine compound (d), A fatty acid amide compound (e) having a melting point of 100 to 140 ° C., and the curing agent (B) includes a modified aliphatic amine compound (f) and a silane coupling agent (g), The solid content concentration of the fatty acid amide compound (e) in the total solid content of the main agent (A) and the curing agent (B) is 0.3 to 3.0% by mass. [Selection figure] None