Abstract
Artificial aggregate production which has the highest volume ingredient in concrete has gained great importance in recent years. The fundemental cause for this is to reduce harmful environmental impacts. In addition, artificial aggregates are tried to be used to improve some important features of concrete. In the present study, the physical and mechanical properties of two types of artificial aggregates produced by cold bonding and sintering methods were compared. For this purpose, artificial aggregates pelletized and sintered at different temperatures were produced by using fly ash at different percentages. Dry density, specific density, water absorption and crushing strength tests were carried out to investigate the physical and mechanical properties of the produced artificial aggregates. The results showed that the bulk density and density values of sintered Fly ash artificial aggregates have a trend of rising but the water absorption values have a decreasing trend. Moreover the highest crushed strength value was observed in samples sintered at 900 oC.
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