International Research Journal of Education and Technology

Construction industry depends heavily on conventional materials such as cement, granite and sand for the production of concrete. Cement is the most economical constituents used in the production of concrete and also poses the problem of acute shortage in many areas, which poses serious problems on its availability, cost and environmental impact. Approximately 1.1 tonnes of earth resources such as limestone, clay etc., are needed for the production of one tone of Ordinary Portland Cement also the process results in the emission of an equal amount of carbon-di-oxide into the atmosphere which may be serious threat to the environment in various forms. So there is always a need for substituent to OPC. For preventing environment and to produce a low cost concrete an attempt is

Being made in this project that the cement is partially replaced by locally available material such as egg shell powder. Generally egg shells were disposed as waste which comprises of 95% of CaCO3 and 5% of Magnesium, Sodium, Potassium, Ironic acid and Silica acid which may be used as an alternate for the cement. Statistics shows that the huge amounts of egg shells were laid as waste and disposed as landfills in India. So it can be replaced for cement due to its chemical properties and its abundant in nature. In this work, experiments were carried out by using egg shells as a partial replacement for cement. The concrete design mix considered is M40 of ratio 1:1:2. The specimens were prepared by replacing cement by 10%, 15% and 20%. The mechanical properties of Egg shell powdered Concrete like compressive, split tensile and flexural strength were determined for 7, 14 and 28 days of curing period and results were compared with the conventional concrete.