Impact of PM2.5 on Wet–Dry Cycle Corrosion Behavior of Q420qENH Bridge Weathering Steel in a Simulated Industrial Atmospheric Environment

Key Points

• Corrosion behavior of Q420qENH weathering steel is significantly impacted by PM2.5 exposure.
• Exposure to PM2.5 during wet-dry cycles leads to accelerated corrosion, with notable degradation observed.
• Analysis in a simulated industrial atmospheric environment provides critical insights into real-world conditions.
• Understanding the impact of PM2.5 on steel performance highlights environmental concerns and infrastructure durability.