International Research Journal of Education and Technology

This research evaluates the mechanical and economic properties of lightweight concrete, including foamed concrete and pervious concrete, in comparison to normal concrete. A special focus was placed on the effect of fibers such as brass-coated steel fiber (BSF), crimped steel fiber (CSF), and polypropylene fiber (PPF) on the strength characteristics of foamed concrete. Concrete samples were prepared for different grades (M10, M15, M20), tested for compressive, tensile, and flexural strength, and analyzed for cost and density. Results indicate that although normal concrete has superior strength, foamed concrete can be significantly enhanced with the addition of fibers, especially CSF, providing a cost-effective and sustainable alternative.