FLEXURAL CAPACITY OF CONCRETE BEAMS REINFORCED WITH HIGH-STRENGTH STEEL BARS UNDER MONOTONIC LOADING

This paper presents the flexural capacity of reinforced concrete beams designed with high-strength steel bars. Reinforced bars fy = 550 MPa are to have flexuralstrength like bar 420 MPa. According ACI 318M-19, (fy =550 MPa) allowed use as reinforcing steel, which previously unpermitted. study was conductedto represent possibility using reinforcement. There five sample thatdesign various diameters (13 and 19 mm) strength longitudinal reinforcement.These were placed on two simple supported undergo monotonic loads at points-load. It isreviewed involve load capacity, moment, beamdeflection. Also, behavior when receiving in terms relationship between anddeflection. Based research, a can accept higher than normalbeams by difference about 16-18%. While same deflection condition, is 100 mm, withhigh reinforcement achieve around 18 percent. Beam barsshowed that not much different from normal-strength because it did notshow brittle collapse. proves be used structuralelements if satisfies requirements specified code.