Answer:
- The application of a coating method that uses water and solid-state waterproofing materials—however, the aforementioned construction seams, exposed steel reinforcement, honeycomb, and surrounding areas must first be reinforced with high-strength non-shrink cement or resin mortar before the waterproofing coating can be applied; after the waterproofing is complete, the base coat must be applied and a drainage slope must be created.
- After priming and fully drying, the FRP coating process is used: an unsaturated polyurethane base coat → glass fiber mesh reinforcement → surface grinding and smoothing → an unsaturated polyurethane intermediate coat → an unsaturated polyurethane top coat in color.
- The tar PU series is waterproof with one bottom and two coats.