D. B. Prajapati, R. R. Tripathi, T. M. Patel
The increasing scarcity of freshwater resources has prompted the exploration of seawater as an alternative in construction, particularly in concrete production for coastal and offshore applications. This study examines the feasibility of using seawater in concrete, focusing on its effects on workability, strength development, durability, and reinforcement corrosion. Experimental findings and existing literature indicate that while seawater can enhance early-age strength due to accelerated hydration, the presence of chlorides significantly increases the risk of steel corrosion, affecting long-term durability. The study also reviews mitigation strategies, including the use of supplementary cementitious materials, corrosion-resistant reinforcement, and non-metallic alternatives. Results suggest that seawater-mixed concrete may be viable in specific conditions, especially in non-reinforced or properly protected structural systems. The research contributes to sustainable construction practices by evaluating the technical, environmental, and economic implications of seawater utilization.
Seawater Concrete; Sustainable Construction; Chloride Attack; Reinforcement Corrosion; Durability; Salinity Effects; Supplementary Cementitious Materials; Coastal Infrastructure.