Abstract
In this research work, influence of eggshell powder (ESP) as partial replacement of cement in concrete was investigated. Cement was replaced by ESP by an amount of 5, 10, 15 and 20% by weight; all other parameters of mixture were kept constant. Workability of fresh concrete and compressive strength of hardened concrete were evaluated and compared with conventional concrete. Compressive strength of all types of mixture was investigated after 7, 14, 28 and 63 days of standard moist curing. Workability was decreased with the increase in amount of ESP; whereas delay in strength gain was observed with the increasing amount of ESP. Compressive strength of specimens with ESP is comparable with conventional concrete after 63 days of age. However, a huge difference was observed between compressive strengths to age of 28 days. It concluded that ESP has the potential to be used as partial replacement of cement and can also be used as retarder in concrete production.
Keyword(s)
Egg shell Powder, Cement Replacement, Workability, Compressive Strength