| The Use Of Sandstones In Istanbul Omerli Regıon As Fıne Agregate In Concrete
Today construction activities cause to increase the concrete production as result of this aggregate requirment increase. Aggregate resources in Istanbul are enough now, but it is decrasing fastly. Therefore, aggregate requirements will be supplied far distance or alternative aggregate resources should be evaluated. In this aim; Triassic sandstones in Istanbul Omerli Region are researched as alternative aggregate resource.
In this study, specimens were taken from three different locations, where color and texture chancing of sandstones. From these samples thin sections were prepared and examined under a polarising microscobe to determine petrographic characteristics, XRD analysis was conducted for determining mineralogical composition and the chemical analysis was carried out for determining chemical composition of sandstones. To apply standart analysis on specimens, block specimens were crushed by crushing machine until they became fine aggregate size (0/4 mm). Physical and chemical characteristics of fine aggregates were determined and accelerated mortar bar tests were also performed on fine aggregates.
To determine the effects of fine aggregates produced from the sandstone, on the concrete properties, strenght and durability of concrete produced in laboratory by using the fine aggregates and coarse grained limestone aggregates, were investigated.
The results were compared with the results of test performed on reference concrete samples. Acording to the results obtained; in spite of using sandstones as fine aggregate in concrete is not economic today, in the future, when the requirements of aggregates increases, the sandstones can be used in low strenght concrete.
YILMAZ Murat,
Danışman : Doç. Dr. Hayrettin Koral
Anabilim Dalı : Jeoloji Mühendisliği
Programı (Varsa) :
Mezuniyet Yılı : 2006
Tez Savunma Jürisi : Doç. Dr. Hayrettin KORAL (Danışman)
Prof. Dr. Mehmet ÖNALAN
Prof. Dr. İzver TANSEL ÖNGEN
Prof. Dr. Atiye TUĞRUL
Prof. Dr. Yıldız ALTINOK
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