Use of Egg Shell Powder as Partial Replacement of Cement in Concrete

- Concrete is widely used throughout the world for the construction of most buildings, bridges, and other structures. The construction industry is one of the largest consumers of natural resources and contributes significantly to environmental pollution through cement production. At present, the entire construction sector is exploring suitable and effective waste materials that can minimize the use of cement and ultimately reduce construction costs. One such alternative material is egg shell powder. A large amount of egg shell waste is disposed of in landfills without any pre-treatment since it is conventionally considered unusable, which creates serious environmental issues. Therefore, a proper alternative method is required to manage these wastes in an eco-friendly manner. The aim of this investigation is to utilize egg shell powder as a partial replacement for cement. In this study, cement is replaced by egg shell powder at levels of 5%, 10%, and 15% by weight of cement. Experimental research was conducted to determine the mechanical properties such as compressive strength, split tensile strength, and flexural strength of egg shell powder-based concrete. The results indicate that the strength of the concrete increases with the addition of egg shell powder, and the comparison shows improved performance in egg shell-modified concrete compared to conventional concrete.