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Updated: Oct 15, 2025
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Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight
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Microscopically analyzed interface behavior characteristics of acid precipitation on asphalt surface
Tengjiang Yu1, Lan Zhou1, Haitao Zhang1
1College of Civil Engineering, Northeast Forestry University, Harbin, China
Summary
Acid precipitation interacts more strongly with asphalt pavement than neutral precipitation, potentially causing more difficult removal and water damage, especially at lower service temperatures. This study reveals micro-effects on drainage efficiency.
Area of Science:
- Materials Science
- Environmental Science
- Chemical Engineering
Background:
- Acid precipitation impacts asphalt pavement performance, yet microscopic interface behavior is understudied.
- Understanding precipitation-asphalt interactions is crucial for drainage asphalt pavement durability.
Purpose of the Study:
- To microscopically analyze the interfacial behavior of neutral and acid precipitation on asphalt surfaces.
- To investigate the influence of acid precipitation and service temperature on asphalt pavement drainage.
Main Methods:
- Molecular dynamics (MD) simulations of the asphalt-precipitation interface.
- Laboratory configuration of acid precipitation and measurement of contact angles (SO₄²⁻, NO₃⁻).
Main Results:
- Acid precipitation exhibits stronger interaction with asphalt than neutral precipitation, hindering removal.
- Increased service temperature enhances the interaction energy between precipitation and asphalt.
- Combined effects of acid precipitation and low service temperature increase susceptibility to water damage.
Conclusions:
- Acid precipitation and service temperature significantly affect the micro-level drainage efficiency of asphalt surfaces.
- Findings offer theoretical insights and practical value for drainage asphalt pavement applications.
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