Comparative Investigation on Torsional Behaviour of RC Beam Strengthened with CFRP Fabric Wrapping and Near-Surface Mounted (NSM) Steel Bar

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Appearance and colours</td><td class="align_center">Resin part A: white (paste); hardener part B: grey (paste)</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Density</td><td class="align_center">1.31 kg/l (mixed)</td></tr><tr><td class="align_left">Mixing ratio</td><td class="align_center">A : B = 4 : 1 by weight</td></tr><tr><td class="align_left">Open time</td><td class="align_center">30 min (at + 35°C)</td></tr><tr><td class="align_left">Viscosity</td><td class="align_center">Pasty, not flowable</td></tr><tr><td class="align_left">Service temperature</td><td class="align_center">−40°C to +50°C</td></tr><tr><td class="align_left">Tensile strength</td><td class="align_center">30 MPa (cured seven days at +23°C)</td></tr><tr><td class="align_left">Flexural E-modulus</td><td class="align_center">3800 MPa (cured seven days at +23°C)</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Sikadur-330 (two-part epoxy impregnation resin).</div>

Advances in Civil Engineering

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Table 3

Table 3: Comparative Investigation on Torsional Behaviour of RC Beam Strengthened with CFRP Fabric Wrapping and Near-Surface Mounted (NSM) Steel Bar 