EXPERIMENTAL STUDY ON FLEXURAL STRENGTHENING OF RCC BEAM BY USING CFRP

Abstract

his project explores the flexural behaviour of carbon fiber reinforced polymer (CFRP) and
Engineered cementitious composite (ECC) strengthened reinforced concrete (RC) beams. For flexural strengthening of
RC beams, total 6 beams, with (150 x 300) mm rectangular cross section and of span 1900 mm are casted. The beams
are designed as under – reinforced concrete beams. Four beams are strengthened with CFRP rods and ECC which are
parallel to beam axis at the bottom under virgin condition and tested until failure; the remaining two beams are used as
control specimens. Static responses of all beams are evaluated in terms of strength, stiffness, ductility ratio, energy
absorption capacity factor, compositeness between ECC and concrete and the associated failure modes. The results
shows that the strengthened beams exhibit increased flexural strength, enhanced flexural stiffness and composite action
until failure.