Study of some Physical properties of basalt – clay mixes

Jordanian basalt was added to China clay on different mixes up to 60% by weight. Some of physical properties were studied. Mixes basalt showed a remarkable increase in density with increasing basalt addition. Porosity was the property greatly affected with increasing the firing temperature. Maximum reduction in porosity was observed at high firing temperature for all mixes and this will cause increase in hardness values. The different phases were determined by X–ray analysis. The expansion coefficient decreases with the increase of the basalt content. No significant differences of the heating rate are observed on the properties of the thermal expansion after firing at 1100°C for all mixes.