Steel fiber reinforced concretes behaviour under biaxial flexure

Yıl 2010, Cilt: 12 Sayı: 1, 57 - 64, 01.06.2010

Fehmi Çivici Şerif Saylan

Öz

En çok kullanılan yapı malzemelerinden biri olan beton gevreklik özelliği ile bilinir. Betonun gevreklik özelliğinin iyileştirilerek betona sünek davranış kazandırabilme çalışmalarına son günlerde ağırlık verilmiştir. Bu çalışmalardan bir kısmını da, beton içine liflerin katılması oluşturmaktadır. Kullanılan lifler çelik, cam, sentetik ve ahşap esaslı olabilir. Beton içine liflerin homojen bir şekilde karıştırılması ile elde edilen lifli beton park sahaları, havaalanı kaplamaları, erozyona maruz yüzeyler, köprü tabliyelerinde yoğun bir şekilde uygulanmaktadır. Bu çalışmada, iki eksenli eğilmeye maruz çelik lifli ve lifsiz plak numunelerin davranışları deneysel olarak incelenmiştir. Her bir numunenin deneyinden elde edilen yük-sehim eğrilerinden yararlanarak iki eksenli eğilmeye maruz çelik lifli ve lifsiz plak numunelerin davranışları karşılaştırılmıştır

Anahtar Kelimeler

Lif, eğilme, çelik, beton

Steel fiber reinforced concretes behaviour under biaxial flexure

Öz

Concrete which is one of the most used structural material is recognized with brittle characteristics. Recently, the study of gaining ductile feature on concrete has been studied. One of these works is to add fibers in concrete. Fibers in concrete have different types such as steel, glass, synthetic and wood. Fiber concrete which is obtained by a mixture of cement, water, aggregate and fibers is often used in construction of bridge decks, airport pavements, parking areas subjected to cavitation and erosion surfaces. In this study, plain and steel fiber reinforced plate specimens’ behaviour subjected to biaxial flexure is examined experimentally. To compare plain and steel fiber reinforced plate specimens behaviour, the load-displacement curve of each specimen was obtained by experiments

Anahtar Kelimeler

Fiber, flexure, steel, concrete

Kaynakça

• [1]. Hughes, B. P. and Fattuhi, N. I., Stress-Strain Curves for Fiber Reinforced Concrete, Concrete Research, Vol. 7, pp. 173-184, (1977).
• [2]. Gokoz, U. N., Naaman, A. E., Effect of Strain Rate on the Pull Out Behaviour of Fiber in Mortar , The International Journal of Cement Composites, Vol. 3, No. 3, pp. 187-202, August, (1981).
• [3]. Gopalaratram, V. S., Shah, S. P., Batson, G. B., Criswell, M. E., Ramaksishran, V. , Wecharatara, M.,Fracture Toughness of Fiber Reinforced Concrete, ACI Materials Journal, Vol.88, No.4, pp. 339-353, July-August, (1991).
• [4]. Banthia, N. , Trottier, J-F. , Beaupre, D. Wood, D., Steel Fiber Reinforced Wet-Mix Shotcrete: Influence of Fiber Geometry,Concrete International:Design and Construction, pp. 24-28, May, (1992).
• [5]. EFNARC, European Specification for Sprayed Concrete, Guidelines,(1999) [6]. Clements, B. E., Matthew, J. K., Measuring the Performance of Steel Fibre Reinforced Shotcrete, IX Australia Tunnelling Conference, Sydney, Australia, 27-29 August, (1996).
• [7]. Filliatrault, A., Ladicani, K., Massicotte, B., Seismic Performance of Code- Designed Fiber Reinforced Concrete Joints, ACI Structural Journal , Vol.91, No.5, September-October (1994).
• [8]. Thomas, J., Ramaswamy, A., Mechanical Properties of Steel Fiber-Reinforced Concrete Journal Of Materials In Civil Engineering, ASCE, May, (2007). [9]. Ozcan, M., Bayraktar, A., Şahin, A., Haktanır, T., Türker, T., Experimental and Finite Element Analysis on the steel fiber reinforced concrete(SFRC) beams ultimate behaviour, Construction and Building Materials, 23, pp.1064-1077,(2009).
• [10]. Banthia, N., Sappakittipakorn, M., Toughness enhancement in steel fiber reinforced concrete through fiber hybridization, Cement and Concrete Research, 37, pp. 1366-1372,(2007).
• [11]. Yazıcı, Ş., İnan, G., Tabak, V., Effect of aspect ratio and volume fraction of steel fiber on the mechanical properties of SFRC, Construction and Building Materials,21,pp. 1250-1253,(2007).
• [12]. ASTM C1018, Standart Test Method for Flexural Toughness and First-Crack Strength of Fiber-Reinforced Concrete (Using Beam with Third-Point Loading),(1997). [13]. JSCE SF-4, Standards for tests methods of fiber reinforced concrete,Japan Concrete Institute, pp.45-51,(1984).
• [14]. Design Consideration for Steel Fiber Reinforced Concrete Report, ACI Committee 544, Title No. 85-S52, ACI Structural Journal, Sept-Oct., (1988).