A Review: Characterization of Bio-Cement Composites Reinforced with Calcium Carbonate Obtained from Chicken Egg-Shells

Cement is frequently utilized in the building business across the world, and experts are currently looking for an acceptable and usable unused product that would substantially reduce cement consumption and production costs. Eggshell is one of the waste materials created by the chicken egg industry, and its production has been gradually rising in recent years, adding to environmental and disposal concerns. The chicken eggshell is a bio-ceramic composite that is a solid waste material whose final disposal is complicated and expensive. Following that, the presence of organic egg shells in the form of calcium carbonate improves the self-compacting capabilities of concrete and increases particle packing and spacer effects. The aim of this paper is to evaluate the mechanical characteristics of bio-cement eggshell composites, investigate the microstructure of eggshells by scanning emission microscope (SEM) and determine the phase distribution of eggshell composites by using x-ray diffraction (XRD).