Dozaj ve Agrega Granülometrisinin Hafif Betonların Isı İletkenliğine / Effect of Grading and Cement Contents on The Heat Conductivity Values of Lightweight Concrete
OZET: Bu calisma, Dogu Anadolu Bolgesi, Erzurum Ili Pasinler ilcesi yoresinde ekonomik potansiyeli bulunan hafif agrega ocagindan saglanan agregayla uretilen hafif betonlarin isi iletkenlik ozelliklerinin belirlenmesi amaciyla yapilmistir. Arastirma konusu olan hafif agregaya, ilgili standartlardaki deneyler uygulanmis ve agrega ozellikleri saptanmistir. Ozellikleri bilinen agreganin farkli iki granulometrisi kullanilarak uc ayri dozajli hafif betonlar olusturulmustur. Sertlesmis betonlarda 28 gunluk birim agirlik ve isi iletkenlik degerleri belirlenmistir. Elde edilen sonuclar, hafif agregayla uretilen betonun dusuk birim agirlik ve isi iletkenlik degerlerine sahip oldugunu, dogal ve ayarlanmis granulometrili agregayla uretilen betonlar arasinda cok buyuk farklilik olmamakla birlikte ayarlanmis granulometrili betonlarin daha dusuk isi iletkenlik degerleri verdigini gostermistir. Anahtar Kelimeler: Hafif beton, isi iletkenligi, dozaj, tane dagilimi Effect of Grading and Cement Contents on The Heat Conductivity Values of Lightweight Concrete ABSTRACT: This research was carried out to determine heat conductivity properties of concrete produced with natural lightweight aggregates in Eastern Anatolian Region, Erzurum-Pasinler province that has economical potential. Aggregate properties were determined using the related standarts of lightweight aggregates. To produce lightweight concrete, lightweight aggregates were used in natural and adjusted grading and in three different cement contents. Unit weight of 28 days and heat conductivity were determined for hardened concrete. The results obtained have shown that concrete produced with lightweight aggregates have low unit weight and heat conductivity, however no significant differences were found between the concrete produced with natural and adjusted grading. Lightweight concrete produced with adjusted grading has shown low heat conductivity values. Key Words: Lightweight concrete, heat conductivity, cement contents, grading