Abstract:

Self-compacting concrete (SCC) is a special type of concrete with high workability. This type of concrete is preferred and used as innovative concrete because it does not require vibration, has high fluidity, can be applied quickly and requires minimum workmanship. The high workability of self-compacting concrete depends on the type and amount of various chemical and mineral admixtures in its content. In this study, self-compacting concrete groups were produced by using obsidian powder, which is a rock of volcanic origin, at 15, 20 and 25% ratios instead of cement. In these groups; flow-table, V-Funnel flow, L-box, U-box fresh concrete tests and compressive strength tests were carried out after 7 and 28-days of standard water curing. When the test results are examined; it was determined that obsidian powder improved the self-compacting fresh concrete properties. In addition, it has been determined that the concrete mixtures produced using obsidian can have high compressive strength.

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