Abstract:- The concrete material has to be demolished during ongoing or old construction. The concrete waste obtained from these processes is called “Demolished Concrete”. The environmental protection and for promotion of the principles of sustainable development has led to recycled aggregate. Demolished sites and restoration schemes are sources of large amounts of solid waste, which today is being used as landfill. The reusing and recycling the demolished concrete a better economy can be achieved without an effecting of environment.

In the past studies as per literature study most of the researches done only strength parameters of concrete with the help of different percentages of demolished aggregates. In this present study in addition of strength characteristics durability is also done. This project deals with the study of workability, compressive strength, split tensile strength, flexural strength and durability of concrete by replacing coarse aggregates with demolished concrete waste aggregates. The percentage replacement of demolished aggregated used in this study is 0%, 10%, 20%, 30%, 40% and 50%.

Keywords: Demolished Concrete, environmental protection, recycling, workability, compressive strength, split tensile strength, flexural strength, durability.