• Dr.N.H.Agilandeswari
• S. Gokulanathan
• V.Harshidha
• M.Arunkumar
• A.Braveenkumar

The research investigates the use of seawater as both a mixing and curing agent in M30 grade concrete, combined with the partial replacement of cement by fly ash and metakaolin. Specifically, the concrete specimens were prepared with varying proportions of fly ash (30% by weight of cement) and metakaolin (5%, 10%, and 15% by weight of cement). The seawater was sourced locally from the marine environment, replacing the conventional freshwater typically used in concrete production. Comprehensive testing procedures were employed to evaluate the mechanical properties of these concrete mixtures, focusing on key parameters such as compressive strength and flexural strength. The experimental results were then compared with those of conventional concrete mixes to assess the effectiveness of these sustainable alternatives. The findings from this research are quite promising. They suggest that utilizing seawater, along with fly ash and metakaolin, can enhance the mechanical properties of concrete. This approach not only has the potential to reduce the environmental impact of concrete production but also offers a way to conserve freshwater resources. Such innovative methods could be transformative for the construction industry, promoting eco-friendly practices and helping to address some of the environmental challenges we face today. The study provides valuable insights into the feasibility and practicality of implementing these sustainable techniques in real-world construction projects.

Alternative materials, Seawater, Partial replacement, Metakaolin, Flyash, Compressive strength, Flexural strength, supplementary cementitious materials, Eco-friendly, Environmental impact

"SUSTAINABLE CONCRETE MADE WITH SEAWATER, METAKAOLIN AND FLY ASH", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 6, page no.f592-f597, June-2024, Available :http://www.jetir.org/papers/JETIR2406565.pdf

"SUSTAINABLE CONCRETE MADE WITH SEAWATER, METAKAOLIN AND FLY ASH", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 6, page no. ppf592-f597, June-2024, Available at : http://www.jetir.org/papers/JETIR2406565.pdf