Impacts of reinforcement ratio and fatigue load level on the chloride ingress and service life estimating of fatigue loaded reinforced concrete (RC) beams

摘要

High-cycle fatigue loading combined with chloride exposure was studied with a close investigation of reinforcement ratio (1.06%, 1.59%, 2.91%) and fatigue load level (0.2-0.5). This study conducts both, experimentally and service life modeling based on the Monte-Carlo simulation. Results show that: (1) high-value fatigue loads expedite the chloride ingress of compressive concrete; (2) at the load level of = 0.4, chloride ingress of tensile concrete significantly increases and service life decreases = 93%; (3) although reinforcement ratio of 1.59% decreases the chloride ingress of tensile concrete, varying the reinforcement ratio rarely affects the service life. (C) 2020 Elsevier Ltd. All rights reserved.