Afyonkarahisar’da Yapıtaşı Olarak Kullanılan Volkanik Tüflerin Gözenek Özellikleri

Tüfler yüzlerce yıldır yapı malzemesi olarak kullanılmaktadır. Tüflerin fiziksel ve mekanik özellikleri, gözenek miktarı ve geometric özelliklerinden etkilenmektedir. Bu makalede, doğal yapı taşı olarak kullanılan Seydiler ve Ayazini (Afyonkarahisar- Türkiye) tüflerinin gözenek özellikleri araştırılmıştır. Tüflerin mineralojik ve petrografik özelliklerinin belirlenmesi için; polarize optik mikroskop, XRD analizi ve taramalı elektron mikroskobu (SEM) kullanılmıştır. Tüfler kuvars, feldispat kristallerinin yanı sıra; mafik mineral olarak biyotit ve kayaç parçacıkları içermektedir. SEM görüntüleri, tüflerde çok sayıda boşluk bulunduğunu göstermektedir. Ayazini ve Seydiler tüflerinde gözenekliliğin ortalama değeri % 37.3 ve % 36.0'dır. Gözenek boyut dağılımını belirlemek için cıva porozimetresi kullanılmıştır. Gözenek boyutları, Ayazini tüflerinde yaklaşık 200.000 - 10 nm ve Seydiler tüflerinde yaklaşık 7.000 - 10 nm arasında değişmektedir.

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

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.

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Politeknik Dergisi-Cover
  • ISSN: 1302-0900
  • Yayın Aralığı: Yılda 4 Sayı
  • Başlangıç: 1998
  • Yayıncı: GAZİ ÜNİVERSİTESİ