Polyurethane film-forming protective coatings
ResinFIP COAT PU 370 EL
Elastic, two-component, film-forming protective system, based on polyurethane resin in solvent, for the protection of concrete structures.
What it is used for
ResinFIP COAT PU 370 EL has been formulated for the protection of concrete structures from the effects of environmental agents and de-icing salts. It can be applied either manually or by spraying and it creates a film-forming coating that forms a barrier against the entry of aggressive substances.
ResinFIP COAT PU 370 EL bridges cracks resulting from plastic or hygrometric shrinkage; this requirement is measured by its crack bridging ability.
Before applying ResinFIP COAT PU 370 EL one of the following primers must be applied, depending on the conditions of the substrate:
• ResinFIP COAT PU 370 EL suitable for dry substrates, with maximum humidity 4%;
• ResinFIP PRIMER WP 700 to be used on damp substrates and/or when it is necessary to create a vapour barrier,
as in the case of structures against the ground, or when it is necessary to guarantee high resistance to negative hydraulic pressure.
The application of the primer is essential to achieve adhesion with the concrete substrate.
ResinFIP COAT PU 370 EL helps increase the service life of the structure.
I principali requisiti e prestazioni che identificano ResinFIP COAT PU 370 EL sono:
High impermeability to water, which helps inhibit or slow down the corrosion processes that are the main cause of the deterioration of concrete structures; however, it is not suitable for permanent contact with water;
High impermeability to carbon dioxide, it prevents or blocks concrete carbonation phenomena. Carbonation is the process that causes the corrosion of the reinforcements
High impermeability to chloride ions, which are particularly aggressive if they come into contact with the reinforcements, corroding them locally to the point of breaking; chloride ions also deteriorate the cement paste over time;
High water vapour permeability, which allows the structures to “breathe” and prevents the formation of tensions at the interface between the protective system and the substrate; it also helps keep the concrete dry, thus preventing the corrosion of the reinforcements;
Good ability to bridge cracks, which is commonly called crack bridging ability and indicates the ability of the protective system to provide a continuous surface even if applied over cracks existing in the concrete substrate at the time of application
High adhesion to the substrate, which guarantees a long service life;
High resistance to freeze-thaw cycles, which guarantees a long service life of the structure, even in environments subject to frequent thermal cycles;
Resistance to UV rays, in addition to guaranteeing high durability in situ, it allows for the initial colouring to be preserved, an intrinsic characteristic of acrylic protective systems.
Appearance and color