1- Applying a coating is an action taken to prevent more expensive problems in the future and also to extend the life of concrete repairs
2- Also to extend the life of concrete repairs
To Prevent Attack on b) Steel reinforcement
To Creates impermeable barrier
|
To Prevent Damage from a) Direct damage to concrete from - Chemicals b) Damage to steel (in presence of water and oxygen) from - Carbon dioxide |
|
Acrylic |
Polyurethane |
Epoxy |
Silane / Siloxane |
Chemical |
Average |
Good |
Very good |
Poor |
Sulphate |
Good |
Very good |
Very good |
Good |
Carbon Dioxide |
Good |
Very good |
Very good |
Good |
Chloride ion |
Good |
Very good |
Very good |
Good |
Abrasion |
Average |
Good |
Very good |
Poor |
UV Resistance |
Very good |
Very good |
Poor |
Good |
Flexibility |
Good |
Good |
Poor |
Poor |
Breathability |
Good |
Very Poor |
Poor |
Very good |
Adhesion |
Good |
Good |
Very good |
Good |
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