REPAIR OF REINFORCED CONCRETE BEAMS SUBJECTED TO TORSION USING FERROCEMENT

Abstract

In this research, an experimental study was performed to investigate the torsional behavior of RC beams repaired by ferrocement. Two main variables were considered, the influence of ferrocement configuration and ferrocement number of layers. The experimental investigation includes testing of six RC beams. The specimens were tested under pure torsion. The results showed that using all ferrocement strengthening technique improves the ultimate load carrying capacity of all the repaired beams except the U-jacket technique, where Full wrapping is the with 2-layer most effective configuration followed by 1-layer full wrapping configuration. In addition, ferrocement 2 layer strips give higher torsional strength than ferrocement 1 layer strips. The results show that number of layer play a vital role in strengthening, where the higher number of layer and the full wrapping increase in effective confinement compared to the lower number of layer and strips wrapping.