The use of fiber reinforced polymer
(FRP) for strengthening
concrete structures has grown rapidly during the past
few years. In spite of exhibiting superior properties, the safety of usage is
questionable as FRP undergoes brittle debonding failures. Amongst the reported
failure modes of FRP strengthened concrete beams, there has been limited
research in terms of intermediate crack induced interfacial debonding and fewer
strength models are developed for predicting such failures. It is suggested
that conducting a simple
shear test on the FRP
bonded to concrete substrate can
simulate this type of failure mode. This paper is a study of the existing
experimental and
analytical work done to understand the failure mode of FRP
bonded concrete. Twelve specimens were
tested to study the influence of
concrete strength and the amount of FRP on the ultimate load capacity of
FRP-concrete bond under direct shear. Existing experimental work was collected
from literature and consists of an extensive database of 351 concrete
prisms bonded to FRP and tested in direct shear. The analytical models from various
sources are applied to this database and the results are presented.
More abstracts about the PREDICTION OF BOND FAILURE OF CONCRETE PRISMS BONDED WITH FRP COMPOSITES