Physico-Mechanical Properties of Eggshell Powdered-Reinforced Laterite Composites for Sustainable Construction

This study investigates the enhancement of mechanical properties in laterite-based composites through the incorporation of powdered eggshells (ESP) for sustainable construction applications. Laterite soil was blended with Ordinary Portland Cement (OPC) and varying concentrations of ESP (0%, 5%, 10%, 15%, and 20%) to produce the composites. The physical and mechanical properties were evaluated through tests on compressive strength, flexural strength, density, water absorption, and hardness. The results indicate that the composite with 15% ESP exhibited the highest compressive strength (2.56 MPa) and flexural strength (1.03 MPa). Additionally, increasing ESP content led to a reduction in density, while water absorption decreased up to 10% ESP and then increased beyond that concentration. The hardness of the composites peaked at 15% ESP. These findings demonstrate that incorporating 15% ESP into laterite-based composites enhances their mechanical properties, suggesting its potential as a sustainable material for construction. The use of powdered eggshells, a waste byproduct, not only improves the performance of construction materials but also supports environmental sustainability by reducing waste and promoting recycling. This innovative approach offers a promising solution for developing cost-effective and eco-friendly construction materials.