STUDY ON CORROSION EFFECTS IN REINFORCED CONCRETE STRUCTURES AND ANTI-CORROSION SOLUTIONS FOR CONSTRUCTION PROJECTS AT THANH DONG UNIVERSITY

Abstract

In reinforced concrete (RC) structures, steel reinforcement is protected by the surrounding concrete cover, which forms a passive film that prevents oxidation. However, under prolonged exposure to aggressive environments such as chloride ions, CO₂, high humidity, sulfates, and temperature fluctuations, this protective layer may deteriorate, leading to reinforcement corrosion. At Thanh Dong University, many new construction projects have been implemented and are affected by the typical climate of Hai Phong a tropical monsoon region with hot, humid summers and heavy rainfall, and cold, dry winters. The average annual temperature ranges from 23°C to 30°C, and the high humidity (78–87%), together with moisture from the Bac Hung Hai River, increases the risk of corrosion in RC structures. Therefore, studying the effects of corrosion and proposing appropriate solutions is necessary. The use of mineral admixtures to enhance impermeability, improve resistance to aggressive agents, limit cracking, and increase durability is considered an effective solution, contributing to extending the service life of structures and reducing maintenance and repair costs.