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BETON AGREGASI OLARAK KULLANILACAK BAZALTLARIN ALKALİ-SİLİS REAKSİYONU YÖNÜNDEN İNCELENMESİ

EVALUATION OF BASALT AS CONCRETE AGGREGATES FROM THE POINT OF ALKALI-SILICA REACTIVITY

Journal Name:

  • İstanbul Yerbilimleri Dergisi

Publication Year:

  • 2004

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Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
Basaltic rocks are potential rocks from the point of alkali-silica reaction used as concrete aggregates. The objective of this study is to determine reactivity of the basalts in different composition and texture. The study was carried out on Niğde basalts that are widespread in the Middle Anatolian Region of Turkey. They form the major source of concrete aggregates. Early Quaternary Melendiz Volcanites, Quaternary Karataş volcanites and İğredağ basalts were selected around the Niğde Region, and the experimental studies were conducted on these rocks. The basalts were firstly classified according to their petrographical and chemical composition. Petrographic techniques and accelerated mortar bar test were then used to evaluate the potential alkali reactivity of the basalt aggregates. The basalts having acidic-intermediate character and matrix that is composed of volcanic glass are potentially suitable for alkali-aggregate reaction.
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Abstract (Original Language): 
Bazaltlar beton agregası olarak kullanıldıklarında, alkali-silis reaksiyonu oluşturabilen potansiyel kayalar arasında yer almaktadır. Bu çalışmada, farklı bileşim ve dokusal özelliklere sahip bazaltlar reaktivite açısından değerlendirilmiştir. Araştırmalar için Orta Anadolu’da yaygın olarak gözlenen Niğde yöresi bazaltları seçilmiştir. Bazaltlar, bölgede beton agregası olarak yaygın bir kullanıma sahiptir. Araştırmaların üzerinde gerçekleştirildiği bazaltlar, Alt Kuvaterner yaşlı Melendiz volkanitleri ile Kuvaterner yaşlı Karataş volkanitleri ve İğredağ bazaltlarıdır. Bu kayalar öncelikle petrografik ve kimyasal özelliklerine göre sınıflandırılmıştır. Alkali-silis reaksiyonunun etkilerini belirlemek amacıyla da petrografik ve hızlandırılmış harç çubuğu deney yöntemleri kullanılmıştır. Yapılan değerlendirmelere göre, incelenen bazaltlar arasında asit-ortaç karakterli olanlar ile matriksi volkan camından oluşanlar, potansiyel olarak yavaş reaktif agrega özelliğindedir.
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  • 2
161-169
  • Turkish

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