Pasinler Obsidiyeni ve Çinko Cürufunun Puzolanik Aktivite ?ndekslerinin ?ncelenmesi

Pozzolanes are mineral additives that have been widely used in concrete production recently. The main purposes of pozzolana to provide economy and improve various properties concrete. In this study, obsidian which located Pasinler District Erzurum Province has high amount reserves the world with silica content, zinc slag occurring during metal, metal industry mainly Turkey capacity world, pozzolanic investigated. For activity test, mortar samples were produced by using 5, 10, 15, 20 25% obsidian; 2.5, 7.5 10% instead cement. Samples for determination index kept at 7 28-days standard cure. At end curing period, indexes determined on basis compressive strength. As a result highest value was obtained rate 15% 5% slag. When results examined, it is both materials can be as pozzolan