THE EFFECT OF FRACTURE AND CRACK GROWTH OF STEEL AND POLYPROPYLENE FIBERS IN THE ORDINARY AND HIGH STRENGTH CONCRETE

Öz

Today, high performance concrete can be produced as easily as normal strength concrete. Concretes are expected to have ductile behavior and have compressive strength, as well. In the recent years, in order to have ductile behavior, researchers have started to strengthen concrete using fibers and have done lots of researches. In this study, normal and high strength concrete with steel and polypropylene fiber are produced, the compressive strength and the tensile strength in split of these concrete is investigated and the fracture energy and crack distribution of notching samples are examined.

Anahtar Kelimeler

• Steel and Polypropylene Piber, Ordinary Concrete, High Strength Concrete, Fracture, Crack Developmants,

ÇELİK VE POLİPROPİLEN LİFLERİN GELENEKSEL VE YÜKSEK PERFORMANSLI BETONLARDA KIRILMA VE ÇATLAK GELİŞİMİNE ETKİSİ

Öz

Günümüzde geleneksel betonlar kadar yüksek performanslı betonlar da kolaylıkla üretilebilmektedir. Betonların basınç dayanımının yüksek olması kadar, belli oranda sünek davranış göstermesi de istenmektedir. Bu amaçla, son yıllarda, sünekliği sağlayabilmek için üretimlerinde betonu liflerle takviye etmeye başlamışlar ve bu konuda da bir çok araştırma yapmışlardır. Bu liflerin başında çelik lifler gelmektedir. Bu çalışmada çelik ve polipropilen lif katkılı geleneksel ve yüksek dayanımlı betonlar üretilerek, bu betonların merkezi basınç, yarmada çekme dayanımları araştırılarak, çentikli numunelerde betonların kırılma ve çatlak gelişimleri incelenmiştir.

Anahtar Kelimeler

• Çelik ve Polipropilen Lifler, Geleneksel Beton, Yüksek Dayanımlı Beton, Kırılma, Çatlak Gelişimi,

Kaynakça

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