Ultra Yüksek Performanslı Lifli Beton İçeren Kirişlerde Etkin Çelik Lif Tipi İncelemesi

Yıl 2016, Cilt: 16 Sayı: 3, 776 - 785, 31.12.2016

Kaan Türker Tamer Birol Altuğ Yavaş Umut Hasgül

Öz

Çalışmada, ultra yüksek performanslı lifli beton içeren betonarme kirişlerde eğilme davranışı

bakımından etkin çelik lif tipinin deneysel olarak incelemesi yapılmıştır. Bunun için biri lifsiz, diğer dördü

farklı çelik lif tipi içeren beş adet 100x150x1500 mm boyutlarında kiriş üzerinde eğilme testleri

gerçekleştirilmiştir. Çalışmada 120 MPa üzeri basınç dayanımına sahip, hacimce %1.5 oranında çelik lif

içeren beton kullanılmıştır. Lif olarak düz mikro lif tipi (F6), iki adet tek kancalı makro lif tipi (F30 ve

F60_1) ve bir adet çift kancalı lif tipi (F60_2) incelenmiştir. Eğilmede etkin çelik lif tipi değerlendirmesi

yerdeğiştirme süneklikleri, yük taşıma kapasiteleri ve çatlak özelliklerine göre yapılmıştır. Çalışmada

elde edilen sonuçlardan; yük taşıma kapasitesi ve çatlakları sınırlandırma bakımından çift kancalı makro

lifin (F60_2), yerdeğiştirme sünekliği bakımından ise düz mikro lifin (F6) en etkin lif olduğu belirlenmiştir.

Anahtar Kelimeler

Ultra yüksek performanslı lifli beton, Çelik lif, Betonarme kiriş, Eğilme davranışı.

Kaynakça

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