Characterization of Agyereku Clay as a Binder for Composite Insulators Production

This study investigates the characterization of Agyereku clay to determine its suitability as a binder in the production of egg shell-reinforced clay composite insulators. The problem addressed is the need for sustainable, costeffective, and high-performance insulating materials for various industrial applications, including electrical and construction sectors. Characterization of clay was focused on its such Atterberg's limits, sieve analysis, and chemical analysis. The Atterberg’s limit test revealed a plastic limit of 47%, a liquid limit of 66%, a plasticity index of 19, and a shrinkage limit of 25%, indicating moderate plasticity and shrinkage properties suitable for molding and shaping. X-ray fluorescence (XRF) analysis showed that the clay primarily consists of silica (42.1%) and alumina (29.26%) essential for thermal stability and mechanical strength; with notable amounts of Na₂ O (18.96%), K₂ O (7.01%), and trace elements like Fe₂ O₃ (0.173%) influencing the sintering process. Sieve analysis demonstrated that 79.6% of the clay passed through a 5 mm sieve, with 66.6% through 2.5 mm, 55.2% through 1.25 mm, and finer fractions enhancing uniformity and bonding in the composite. Balance in particle size distribution ensures structural integrity and porosity, crucial for insulation properties. These findings confirm the suitability of the Agyereku clay as a binder for clay-eggshell composite which is cost-effective and thermally efficient insulating material.