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Ardahan ili andezit-bazalt kirmataş agregalarin beton yapımında kullanılabilirliğinin araştırılması
(Research on Suitability of Crushed Andesite-Basalt Rock Aggregates in Ardahan Province for Concrete Production )

Author : Sedat KARAMAN  Hakan KAYA  
Type :
Printing Year : 2016
Number : 2016-2
Page : 115-124


Summary
Bu çalışmada, Ardahan ili Merkez ilçesinde kırmataş agrega gereksiniminin önemli kısmını karşılayan Balıkçılar köyü agrega ocağından elde edilen kırmataş agregaların beton üretimi ve dayanımı yönünden önemli teknik özellikleri belirlenmiş, mühendislik özellikleri ve beton yapımında kullanılabilirliği araştırılmıştır. Bu amaçla seçilen agrega ocağından alınan örnekler üzerinde standartlara uygunluk, yeterlilik deneyleri yapılarak agregaların fiziksel, mekanik özellikleri ile kimyasal ve mineralojik özellikleri belirlenmiş, bu agregalarla laboratuvar ortamında beton üretilerek mukavemet deneyleri gerçekleştirilmiştir. Elde edilen sonuçlardan agregaların önemli özelliklerinin uygun sınırlar içerisinde kaldığı gözlenmiştir. Agregalardaki ince madde miktarı ve alkali silika reaktifliği sonuçları istenilen koşulları zorlasa da, ocaktan elde edilen agregalarla üretilen betonlar üzerinde yapılan gözlem ve deneylerde olumsuz etki görülmemiş, beton dayanım değerleri standartlarda önerilen değerlerin üzerinde çıkmıştır.

Turkish Keywords
Agrega, kırmataş agrega, beton, Ardahan, andezit-bazalt

Abstract
In this study, suitability of aggregates, obtained from an aggregate quarry of Balıkçılar village meeting significant portion of crushed stone aggregate demand of construction sector and used in constructions in central town of Ardahan province, for concrete production and concrete compressive strength were investigated. Samples taken from the selected quarry were subjected to physico-mechanical analyses to determine their compliance with the relevant standards on sufficiency, physical, mechanical characteristics, chemical and mineralogical properties. Then, concrete was produced from these aggregates in a laboratory and strength tests were conducted on concrete specimens. Results revealed that majority of the values were within the limit values specified in relevant standards. Although the amount of fine materials and alkali-silica reaction were close to limit values, concrete tests did not reveal any negative effects and concrete strength values were found to be above the limits specified in relevant standards. It was concluded that aggregates should be washed through and separated in different granulometric portions to produce quality and strong concrete. Further research is recommended for mineral admixtures to control alkali-silica reaction.

Keywords
Aggregate, crushed stone aggregates, concrete, Ardahan, andesite-basalt

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