Dozaj ve agrega granülometrisinin hafif betonların ısı iletkenliğine etkisi

Bu çalışma, Doğu Anadolu Bölgesi, Erzurum ili Pasinler ilçesi yöresinde ekonomik potansiyeli bulunan hafif agrega ocağından sağlanan agregayla üretilen hafif betonların ısı iletkenlik özelliklerinin belirlenmesi amacıyla yapılmıştır. Araştırma konusu olan hafif agregaya, ilgili standartlardaki deneyler uygulanmış ve agrega özellikleri saptanmıştır. Özellikleri bilinen agregamn farklı iki granülometrisi kullanılarak üç ayrı dozajlı hafif betonlar oluşturulmuştur. Sertleşmiş betonlarda 28 günlük birim ağırlık ve ısı iletkenlik değerleri belirlenmiştir. Elde edilen sonuçlar, hafif agregayla üretilen betonun düşük birim ağırlık ve ısı iletkenlik değerlerine sahip olduğunu, doğal ve ayarlanmış granülometrili agregayla üretilen betonlar arasında çok büyük farklılık olmamakla birlikte ayarlanmış granülometrili betonların daha düşük ısı iletkenlik değerleri verdiğini göstermiştir.

Effect of grading and cement contents on the heat conductivity values of lightwelght concrete

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.

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