FLEXURAL AND SHEAR STRENGTH OF NON-PRISMATIC REINFORCED HIGH STRENGTH CONCRETE BEAMS WITH OPENINGS AND STRENGTHENED WITH NSM-CFPR BARS

These studies presents an experimental and theoretical investigation of flexural and shear behavior of High Strength Twelve reinforced concrete non-prismatic beams with or without opening, strengthened by carbon fiber reinforced polymer (CFRP), tested as simply supported span subjected under 2 point loading. The openings in beams are frequently required to provide accessibility to accommodate essential service such as ducts and pipes. However, introducing an opening in non-prismatic reinforced concrete beams can cause an abrupt deterioration in the flexural and shear capacity due to stress concentration at the corners of the openings. This research presents an experimental and theoretical investigation for the use of carbon fiber reinforced polymer (CFRP) as a strengthening technique to upgrade the non-prismatic reinforced concrete beam with openings.