Abstract

In this study, thermal and mechanical behaviors of composite building materials obtained from different kinds of natural stone wastes were investigated. First of all, XRD analyzes, chemical analyzes and grain size distribution analyzes were carried out to identify the natural stone wastes to be used. %60 granite (magmatic), %35 recrystallized limestone (metamorphic) and %5 pure aluminum oxide (Al2O3) materials were used in the prepared mixture. The prepared mixture was shaped in a steel mold sized 75x20x50 mm by adding 7% shaping water and fired at 1140°C, 1150°C and 1160°C. XRD analyzes, color determination, water absorption coefficient, bending strength, Young’s Modulus, bulk density, apparent density and open porosity tests were performed on the samples obtained after the mixture was fired. According to the XRD analysis results gehlenite, anorthite and wollastonite phases were detected in the samples fired. In accordance with the results of other experiments and analysis, it is detected that bending strength, Young’s Modulus and mass density values have increased, on the other hand water absorption coefficient, apparent density and open porosity values have decreased after the firing process.

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