MICROSTRUCTURAL AND ELEMENTAL CHARACTERISTICS OF CLAY AND MINERAL ADDITIVES FOR POTENTIAL USE IN CERAMIC MATERIALS

Abstract

This study investigates the microstructural and elemental characteristics of raw mineral materials used as potential additives in ceramic production. Clay, waste glass powder, silica fume, and fly ash were analyzed using scanning electron microscopy (SEM) coupled with energy-dispersive X-ray spectroscopy (EDS). The materials were ground and sieved to obtain particles smaller than 74 μm prior to analysis. SEM observations revealed distinct morphological features: clay particles exhibited irregular plate-like structures, waste glass showed angular fractured particles, silica fume consisted of extremely fine agglomerated particles, and fly ash displayed both spherical and irregular particles typical of combustion by-products. EDS analysis confirmed that silica and oxygen are the dominant elements in all materials, while aluminum, magnesium, potassium, and calcium were present in smaller amounts. The results indicate that these materials contain significant silica and aluminosilicate components, suggesting their potential use as mineral additives in ceramic systems and sustainable construction materials.