Influence of hybrid fibers on serviceability of RC beams under loading and steel corrosion

摘要

This paper presents an investigation of the behavior of reinforced concrete (RC) beams containing steel, Polyolefin (PO), Polypropylene (PP), and their combinations under the simultaneous effect of accelerated corrosion and sustained loading. A new setup was designed that made possible the corrosion test of tensile reinforcement and the monitoring of the adjacent concrete cover during loading. During the corrosion test, the parameters of theoretical mass loss, corrosion crack width and cracking area, deflection, and corrosion potential were monitored. After the end of the test, the affected bars were extracted from concrete and gravimetry was done to determine the actual corrosion level. A new method known as "volumetric mass loss" was proposed to determine the profile of corrosion along the corroded bars.