Experimental study on strength and flexural behaviour of reinforced concrete beams using "Deflected structural steel" as reinforcement

Sella kumaraswamy A Sella kumaraswamy A
2013 IOSR Journal of Mechanical and Civil Engineering  
Strength and flexural behaviour of reinforced concrete beams using deflected structural steel reinforcement and the conventional steel reinforcement are conducted in this study. The reinforcement quantity of both categories was approximately equalised. Mild steel flats with minimum thickness and corresponding width are deflected to possible extent in a parabolic shape and semi-circular shape are fabricated and used as deflected structural steel reinforcement in one part, whereas the fabrication
more » ... eas the fabrication of ribbed tar steel circular bars as conventional reinforcement on the another part of the experiment for comparison in the concrete beams. All the beams had same dimensions and same proportions of designed mix concrete, were tested under two point loading system. As the result of experiments, it is found that the inverted catenary flats and their ties, transfers the load through arch action of steel from loading points towards the supports before reaching the bottom fibre at the centre of the beam as intended earlier. Thereby the load carrying capacity and the ductility ratio has being increased in deflected structural steel reinforced beams when compared with ribbed tar steel reinforced concrete beams, it is also observed that the failure mode (collapse pattern)is safer.
doi:10.9790/1684-0613843 fatcat:febra2b5bfaarjd22gveqm5m6m