TAC DINE AD-20
Epoxy Bonding Agent for Concrete and Mortar Finishes
A two-component bonding agent used when placing new concrete or mortar over existing concrete.

Basic specifications
- Product category
- Epoxy bonding agent for concrete and mortar finishes
- Mixing ratio
- Base: hardener = 100:20 by weight
- Pot life
- 150 minutes (20°C, 500 g)
- Appearance
- Base: pale green-white liquid / hardener: transparent yellow-brown liquid
- Features
- Bonding new to existing concrete / suitable for damp surfaces / water resistance
Applications
Concrete overlays
For bonding overlay concrete on dams and similar structures.
Marine structures
For bonding work on quay walls, breakwaters and similar structures.
Bonding and injection
Used as an adhesive or injection material.
Application note
Epoxy surfaces may yellow after prolonged exposure to direct sunlight or ultraviolet light. AD-20 enables a mortar finish over a repaired surface when the application requires it.
Performance data
Selection and application
Selection
For bonding new concrete or mortar to existing concrete, including applications requiring adhesion to damp surfaces.
Application
Remove standing water, apply the resin, and place concrete or mortar within the permitted placement time, which varies with material and substrate temperature.
Documents
Documents are provided as original Japanese-language PDFs. Each card includes a concise English summary for orientation.
Original Japanese specification for bonding new concrete or mortar to existing concrete, including damp-surface use, 100:20 mixing by weight, working time and stated physical properties.
Japanese safety data covering composition and hazards, first aid, fire and spill response, handling and storage, protective equipment, disposal and transport for the base and hardener.