Mechanical and Thermal Properties of Moderate-Strength Concrete with Ceramic Powder Used as Supplementary Cementitious Material

Abstract

The possibilities of utilisation of ceramic powder as supplementary cementitious material are the matter of the presented study. The finely ground ceramic powder originates from the grinding process of thermal insulating brick blocks and shows pozzolanic properties. For the determination of its influence on concrete properties, five mixtures with different percentages of cement replaced by ceramics are designed. The bulk density as well as matrix density are found to decrease with the increasing dosage of waste ceramic material, while the open porosity increases. The compressive strength exhibits a small decrease with the growing amount of cement replacement. The measurement of thermal conductivity shows that by adding ceramic powder the thermal insulating abilities of studied concrete are improved.