Improving Corrosion Resistance of Reinforcing Bars Using Silica and Calcium-Rich Additives

— The purpose of this study was to identify the most Rust on reinforcing steel was investigated using a mixture of eggshell ash and rice husk ash (RHA) in lieu of some of the cement. Using a cylindrical mould (100 mm x 200 mm) and G30 and G25 concrete, the samples' mechanical characteristics were evaluated (150 mm x 300 mm). Eggshell ash and RHA were combined in varying percentages to create the samples (4 percent : 6 percent , 6 percent : 4 percent ,). Samples have been subjected to a variety of tests, including a slump test, a compression test, and a flexure test. In light of Previous studies found that the addition of eggshells to concrete decreased its strength. When utilising eggshell ash as a partial replacement for cement, most studies find a similar pattern. So, the A blend's added strength comes from the rice husk ash pozzolan reaction (RHA). It has been demonstrated to increase concrete strength when used into the mix design. The rust % may be calculated by the total number of rods of varying diameters made of iron steel