Partial Replacement of Cement with Corn Cob A...

Partial Replacement of Cement with Corn Cob Ash and Saw Dust Ash using Steel slag as Fine Aggregate

Author Name : Ganesh Naidu Gopu, Tejawar Reddy, Sri Durga Vara Prasad

ABSTRACT

Concrete has been most used construction material around the world. As strength of concrete is mostly depends on the binder that is used in it, cement is most commonly used binder in concrete. On the contrary there is need for reduction of usage of cement in concrete due to emission of carbon dioxide into the environment. Keeping in view, in this research cement is replaced with Corn cob ash and Saw dust ash at percentages of 0%, 10%, 15% and 20%. Corn cob ash is a low cost material and can be used for the construction of any type of structure. Because, the cement remains the most expensive ingredient in making a concrete. Saw dust ash is a waste deposit of the wood mill and the steel slag is the byproduct of steel production In addition to cement fine aggregate is also replaced with steel slag with the same proportions. For a mix of M25 grade, concrete is tested for workability and compressive strength is tested for durations of 7, 14 and 28 days.

Keywords: Steel slag, Conventional concrete, Corn cob ash-Saw dust ash, Natural sand, Workability