International Science and Technology Journal

Concrete is most versatile construction material widely used for. It is considered a very strong and durable material that does not require maintenance or may require minor maintenance. However, the compounds present in cement concrete are attacked by many salt solutions and acids. The present study aims to investigate the effect of sea water (attack of sulfates and chlorides) present with varying severity on compressive strength, durability and workability of concrete with silica fume as partial replacement of cement. The results showed that the lowest penetration rate was obtained from samples S. F10 (silica fume =10%). Thus, the durability and strength of concrete improve when silica fume is added as partial replacement of cement in comparison to conventional concrete when exposed to aggressive environment. And by improving the durability of concrete structures, it will direct climate change, achieve sustainable development, and give more life to these structures. These results indicated that the higher the percentage of silica fume, the greater the strength, resistance of concrete to the attack of sulphates and chlorides, the lower the workability. Key words: Chlorides, Silica fume, Sulfates, Concrete.