FLEXURAL BEHAVIOR OF REINFORCED-CONCRETE BEAMS RETROFITTED OR REPAIRED WITH SLURRY INFILTRATED MAT CONCRETE

The flexural behavior of 28 beams was experimentally investigated, wit h an emphasis placed on the determination of the effects of the slurry infiltrated mat concrete (SIMCON) addition on the flexural response o f SIMCON retrofitted and SIMCON repaired concrete beams. the complete flexural behavior of SIMCON retrofitted and repaired beams has been in vestigated and documented. All beams were subjected to third point fle xural loading tests. The experimental results obtained for the SIMCON repaired and retrofitted beams were compared to the results of the ref erence beams. The general behavior and the benefits of the addition of SIMCON on parameters such as moment curvature, load deflection, ducti lity, toughness, and energy absorption were experimentally determined. Tremendous increases in all of the measured flexural parameters were observed in SIMCON repaired and retrofitted beams compared to the refe rence beams. Cracking moments capacity increases of between 56 percent for beams with relatively small sections, were reported while the yie ld moment capacity increases varied between 27 and 62 percent for larg e and small beam sections, respectively. At ultimate, moment capacity increases of between 20 and 69 percent were measured in the repaired a nd retrofitted beams compared to the corresponding values for the refe rence beams. At cracking, yielding, and ultimate, average energy absor ption capacity increases of about 185, 45, and 52 percent, respectivel y, were measured in the SIMCON repaired and retrofitted beams. Similar increases in ductility were reported for the repaired and retrofitted beams.