Evaluation of hardened properties of structural concretecontaining waste tiles and volcanic ash

The production of greenhouse gases, including carbon dioxide gas, is one of the serious problems inhuman life. In line with the production of concrete, which is one of the most widely used constructionmaterials, one of the important issues in the environmental debate is the emission of carbon dioxide gas.Another important issue is the mass production and burial of ceramic tile waste around the world. Theimportance of using this secondary product in the construction industry and reusing this product in theindustry are important issues that can be investigated in construction projects. In this research, there arefive mixing designs with different percentages of ۱۰, ۱۵, and ۲۰ percent of waste tiles as a replacementfor aggregates. In mixture five, ۱۰% volcanic ash has been added to the mixture instead of cement toimprove the concrete properties. Results reveal that by adding waste tiles into mixtures, the compressivestrength first decreases and then increases with higher ratios. The control mixture without any wastetiles or volcanic ash exhibited the highest compressive strength of ۳۳.۶۴ MPa, while the mixture with۱۰% waste tiles and no volcanic ash displayed the lowest compressive strength at ۲۹.۱۰ MPa. Thecontrol mix had the highest density at ۲۴۲۴ kg/m³, and the inclusion of waste tiles had a minimal impacton the density of the concrete. As the percentage of waste tiles increased, there was a gradual reductionin density, but the addition of volcanic ash partially compensated for the decrease caused by the higherpercentage of waste tiles.

Keywords:

Concrete , Waste Tiles , Volcanic Ash , Compressive Strength , Density