Investigation of Punching Behaviour of Steel and Polypropylene Fibre Reinforced Concrete Slabs Under Normal Load


Seiniet F., ÖZDEMİR A.

World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium (WMCAUS), Prague, Çek Cumhuriyeti, 13 - 17 Haziran 2016, cilt.161, ss.458-465 identifier identifier

  • Cilt numarası: 161
  • Doi Numarası: 10.1016/j.proeng.2016.08.590
  • Basıldığı Şehir: Prague
  • Basıldığı Ülke: Çek Cumhuriyeti
  • Sayfa Sayıları: ss.458-465

Özet

Punching is among the most important risks leading to abrupt and brittle fracture in reinforced concrete structures. Punching effect at the end-parts of columns takes place during the transmission of loads from the slab to the columns and this effect is as important as the resistance of slab against bending. In this paper, punching performances of plain, steel fibre and polypropylene fibre incorporating reinforced concrete slabs were compared experimentally. Research program involved testing of three specimens. One specimen was cast as reference specimen and normal load were applied. One steel fibre and one polypropylene fibre-reinforced concrete specimens were produced as flat slab and normal load were applied. For comparison with other studies, the dimensions of test specimens were 1000 x 1000 mm and slab thickness was selected as 100 mm. Reinforcing bars were placed in only bottom parts of the slabs in all specimens. O10 S-335 steel reinforcement were used in the study. It was decided to locate the column in the middle part of the slab for providing formation of punching. The column shape was selected to be circular with a diameter of 150 mm.