They allow for intervention even against negative pressure
The Drykos System for the protection and prevention of critical issues in concrete structures
Drykos Protect is the system dedicated to the protection of concrete structures. Designed to address existing critical issues or to prevent them. It is composed of two types of crystallizing products: a liquid one to be applied by spray and a powder one to be mixed with water and applied by long-bristle brush, roller, or specific pump.
Benefits and advantages
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Concrete degradation: why it happens and what it entails
Concrete works exposed to atmospheric agents and pollution undergo a variety of damages that can be summarized as follows:
Action of atmospheric agents
Temperature variations, humidity, rain, and wind abrasion generate micro-cracks, facilitate the entry of aggressive substances, and progressively erode the rebar cover, accelerating concrete degradation.
Pollution and acid rain
Acids present in rain (H₂SO₄, HNO₃) lower the pH of the concrete, cause decalcification, gypsum formation, and the appearance of cracks and spalling, reducing the natural protection of the reinforcement.
Action of chlorides
Chlorides typical of marine environments penetrate the pores of the concrete, lower the pH, and trigger the corrosion of the reinforcement steel, resulting in cracking and loss of durability.
Carbonation and oxidation
CO₂ from the air reacts with the concrete, lowering its pH and neutralizing the protection of the reinforcement. When the pH drops below 9, oxygen and moisture promote rust: the bars expand, creating cracks and spalling of the rebar cover, compromising the durability and safety of the structure.
