Investigation of pozzolanic properties of acidic and basic tuffs: A case study from Elazığ and Gümüşhane regions

Pozzolans are used as additives in stabilizing clayey soils and trass cement production. Natural unnatural pozzolans added to the ground stabilization process increase bearing strength of soil, reduce deformations that will occur a result stresses, settlements, swelling potential, liquefaction potential permeability. It Pozzolans, which called trass, heat hydration, resistance concrete against cracking, waterproofing prevent expansion caused by alkali-aggregate reaction. For this reason, researching materials with natural pozzolanic properties examining their important for country's economy. 
 In study, chemical mineralogical studies were carried out determine acidic basic tuffs, activity tests on tuffs. As studies, although character tuffs belonging Kızılkaya Formation meet conditions use an additive production recommended standards, they cannot provide sufficient compressive test. This is due low CaO ratio. it necessary ratio lime has been concluded Karabakır not accordance limit values given create reaction be material.