Related Experiment Video
Updated: May 22, 2025

Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight
Published on: May 31, 2022
Adhesion Characteristics of an Asphalt Binder-Aggregate Interface Based on Molecular Dynamics
Hao Xiang1, Zhengxing Wang2, Mingyang Deng1
1College of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, China.
Abstract:
To investigate the adhesion properties of asphalt binder-aggregate interfaces, contact angle tests were performed on base, aged, and SBS# asphalt with limestone and basalt aggregates. A molecular dynamics simulation model was established to analyze interfacial adhesion characteristics. The results indicate good consistency between the experimental and molecular dynamics simulation findings. SBS# asphalt exhibited superior surface free energy and adhesion properties compared with base asphalt, whereas aging reduced the adhesion performance. The interfacial energy between the asphalt and aggregates is closely related to their molecular compositions. When moisture penetrates the asphalt mixture, the interfacial energy between limestone and asphalt significantly increases, compared with that of basalt, with SBS# asphalt exhibiting stronger adhesion than base asphalt. The modifier enhanced the adhesion between the asphalt and aggregates, thereby providing resistance to moisture damage. The findings of this study possess referential value for the selection, modification, and performance optimization of asphalt pavement materials.
More Related Videos
Related Concept Videos
Bonding and Strength of Aggregate
Toughness and Hardness of Aggregate
Adhesion
Capillary action is a result of water’s adhesive tendencies. When a narrow...
Porosity and Absorption of Aggregate
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...
Shape and Texture of Coarse Aggregate
Adherens Junctions
Adherens Junctions are Dynamic

