çelik, mustafa yavuz afyon kocatepe üniversitesi - afyon meslek yüksek okulu - doğal yapıtaşları teknolojisi programı, Afyonkarahisar, Turkey , ergül, ayşe yayla mah., Ankara, turkey

Pore Characterization of Volcanic Tuffs Used as Building Stone in Afyonkarahisar (Turkey)

29399

The tuffs have been used as a building material for hundreds of years. The physical and mechanical properties of tuffs are affected by the amount of pore and its geometry. The pore characteristics of the building natural stone of Seydiler and Ayazini (Afyonkarahisar-Turkey) tuffs were investigated in this article. For determination of the mineralogical and petrographical properties of the tuff; a polarizing optical microscope, X-ray diffractometry and scanning electron microscope (SEM) were used. Tuffs are composed of a mineral assemblage of various crystals including quartz, feldspar; mafic mineral is biotite and rock particles with glass cement. SEM images show the presence of numerous voids in tuffs. The mean value of effective porosity of the Ayazini and Seydiler tuffs was 37.3% and 36.0%. Mercury porosimetry was used to determine the pore size distribution. Ayazini tuffs have pore sizes ranging from about 200.000 to 10 nm and Seydiler tuffs ranging from about 7.000 to 10 nm.

101

Tuff , porosity , pore , size distribution , mercury porosimetry , building stone

Journal Of Polytechnic

112