Skip to main content

Experimental Investigation Of Layered Reinforced Concrete Beams

Research Authors
Yehia A. Hassanean
Hany Madkour
Mohamed A. Saif
Research Department
Research Year
2016
Research Journal
2nd International conference on mechanics of composites, 11-14 June, 2016, Porto, Portugal.
Research Publisher
2nd International conference on mechanics of composites, 11-14 June, 2016, Porto, Portugal.
Research Vol
NULL
Research Rank
3
Research_Pages
NULL
Research Website
http://aicsge9.alexu.edu.eg/
Research Abstract

Concrete reinforced with short steel fibers is associated with its significant ability to control cracking and enhances its ductility and tensile properties. For this reason, steel fiber reinforced concrete (SFRC) has been widely used in RC structures, where tensile cracks very often occur. In the current work, an experimental program was developed to experience the flexural behavior of the two-layered concrete beams. The tensile zone of the investigated RC beams is made of steel fiber reinforced concrete (SFRC), while the compression zone was developed from normal strength concrete (NSC). Eight RC beams specimens of size 120*300*2300 mm were tested under one-point static loading to study the influence of different fiber ratios and the height of SFRC layer on flexural behavior of concrete. Crack width, crack propagation, deflection, steel strain, and concrete strain were measured and presented in this investigation. The test results indicated that, intensive improvement on overall flexural performance with respect to the corresponding non-layered control beams. Adding of steel fibers in the lower layer of concrete beams (tensile zone) increases the first cracking and ultimate loads, stiffness and ductility of the concrete beams.