Strengthening of R.C. Beams Using Different Techniques
Journal Title: IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) - Year 2019, Vol 16, Issue 1
Abstract
Experimental program consisting of five reinforced concrete beams with dimensions 2200 mm length, 150 mm width, 200 mm depth and reinforced by 2 16 bottom RFT, 212 upper RFT and 58/m stirrups, were carried out to investigate the flexure behavior of strengthened R.C. beams using four different techniques. A four strengthening techniques were proposed, the first technique is using 5 cm Ferrocement U-Wrapped from three sides, the second technique using 5cm polypropylene fibers U-Wrapped from three sides, the third technique using one layer U-Wrapped of glass fiber reinforced polymers fixed with bolts, while fourth technique using four layer U-Wrapped of glass fiber reinforced polymers fixed with bolts. Experimental results used to compare between the different strengthening techniques in terms of enhancement of load capacity, first crack load, maximum deflection, Gain in Ductility, Energy Absorption and cost per 1% increase in load capacity. The results indicate that the strengthening of R.C. beam using four layers of glass fiber reinforced polymers fixed with bolts is the best technique to enhancement the flexure behavior with lowest cost, the strengthening of R.C. beam using 5 cm Ferrocement and using polypropylene fibers gives good behavior against flexure with medium cost and the strengthening of R.C. beam using one layers of glass fiber reinforced polymers fixed with bolts the worst technique of strengthening R.C. beams as there is no improvement in the beam behavior.
Authors and Affiliations
Nasr E. Nasr
Keywords
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- EP ID EP443107
- DOI 10.9790/1684-1601027282.
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