The Jirau Hydroelectric Plant in Rondônia is the third largest in Brazil, and in it, Pires worked in the galleries, the powerhouse of the plant, in the process of protecting the expansion joint in the blocks of the generating units and in the upstream and downstream wall.

Problem: The structure presented cracking in the structural elements, thus allowing the passage of aggressive elements to the concrete.

Solution: Fissure sealing with flexible polyurethane resin injection and expansion joints with acrylic gel resin.

Technologies: Injection of Polyurethane Resin and Injection of Acrylic Gel Resin.