Influence of Climate Change on Probability of Carbonation-Induced Corrosion Initiation

The consequences of climate change on infrastructure, particularly reinforced concrete (RC) bridges, have rapidly increased in recent years. These are primarily driven by the surge CO2 emissions, which significantly impacts carbonation depth RC structures. This study aims to investigate probability carbonation-induced corrosion initiation (PCICI) bridge elements. To achieve this, investigation incorporates a range covers, varying from 30 50 mm, and considers different mixes with cement contents 400, 350, 250 kg/m3. utilizes Monte-Carlo simulation method, considering representative concentration pathways (RCPs) account for two emission scenarios: RCP2.6 (low scenario) RCP8.5 (high scenario). By analyzing projected concentrations maximum temperature, provides insights into potential risks bridges. findings indicated significant 66.3% increase PCICI content kg/m3, compared 400 under scenario, specifically when using cover mm 2100. also revealed that approached an approximate value zero covers were set at 45 regardless variations duration considered, both scenarios.