Lightweight ceramics with admixtures of mineral-wool production waste and aluminum silicate cenospheres of various fractions

Abstract

The effect of admixtures of aluminosilicate cenospheres (ASC) of two fractions on the structure and properties of ceramic with waste from the production of mineral wool (MW) was investigated. The influence of different amounts (from 10 to 30%) and different fractions (0.125 – 0.250 mm) and < 0.125 mm ASC on the physical and mechanical properties of ceramic samples after firing at 1000 – 1080°C was determined. It was found that a strong lightweight ceramic with low shrinkage and high porosity can be obtained by using MW as a leaner additive in combination with ASC of two different fractions.