The strain profiles of the FRP reinforcement are discussed with
respect to the global V–d response of the panels. The strain profile
is a plot of an experimental strain measure against the lateral displacement
of the specimen. It is noted that the strain profiles are
shown for the plies applied on one panel side. Results from FRP
strain measures were also combined with the information gathered
from visual inspection of the FRP debonding during the tests.
Debonding of FRP rods and tensile rupture of the NSM
reinforcement were among the common failure mode of RC
beams strengthened using NSM technique. A more ductile
behaviour of two-way slabs strengthened with NSM CFRP
rods was observed as compared to the EB technique [8]. In the
present study, a series of comparative studies in terms of
structural behaviour under flexure between RC beams
strengthened with NSM GFRP bars and those with EB CFRP
sheet were conducted.