1) The document presents the results of a study on the properties of concrete with egg shell powder (ESP) as a partial replacement for cement. 2) Testing was conducted with ESP replacement levels of 0%, 5%, 10%, and 15% to determine the compressive strength and elasticity modulus of concrete mixtures at 7, 14, and 28 days. 3) The highest compressive strength of 22.85 MPa was found in the control concrete without ESP, while the highest strength with ESP was 21.24 MPa for a 5% replacement at 28 days. However, elasticity modulus was highest at 1761 MPa for a 10% ESP replacement.