Microscale deterioration of polyethylene-modified asphalt under water-induced damage using atomic force microscopy

Key Points

• Deterioration of polyethylene-modified asphalt was observed at a microscale, indicating serious vulnerability.
• Atomic force microscopy revealed critical structural changes when exposed to water over time—especially in polyethylene regions.
• Analysis tested various water immersion conditions to assess damage rates and material integrity after exposure.
• This work highlights the need to understand the limits of polyethylene-modified asphalt in wet environments.