Effect of Cross Section Properties on Flat Plate Behavior
Engineering and Technology Journal,
2010, Volume 28, Issue 9, Pages 1802-1815
AbstractOn the wise of structural advantages of flat plate slab systems, the
researches still deal with punching shear hazards and solution techniques for
adopting a rational design comes from experimental investigations. Beside that
there is a rapid development in production the high performance concretes using
chemical additives and wide spectrum of different features fibers which avail
additional options for the structural designers.
The present work is an experimental study adopts the comparison between
uniform concrete sections with specific strength and hybrid sections (consists of
two different layers with different strength in the top half and the bottom one) to
provide reinforced concrete flat plate slabs and conclude the more advantage
option for improving their behaviors against eventual punching shear failure.
Normal strength, high strength and fibrous concrete with (34, 48 and 21) MPa
compressive strength respectively are used to produce the slabs in this study.
The results revealed the preference of the high strength uniform section in
improving the slab behavior besides increasing its ultimate load twice in
comparison with a hybrid section contains high strength concrete at the top half
only and there is no advantage from increasing the tension zone strength on the
hybrid section slab behavior except the ductility.
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