STUDY OF INTERFACIAL ADHESION OF PAVEMENT SEALANTS BASED ON MOLECULAR DYNAMICS

To study the performance of bitumen mixture pavement sealants from their micro-mechanisms, physical properties base bitumen, SBS-modified and epoxy resin sealant as well adhesive sealant-aggregate interfaces were studied using a molecular dynamics simulation. The adhesion sealant-pavement crack wall was contact angle test based on surface energy theory. results show that has excellent properties. Its interfacial work are more significant than those bitumen. An increase in SBS can improve bitumen’s mechanical interaction. interaction between three kinds aggregate is identified mainly adsorption behavior. van der Waals force plays role behavior interface. In contrast, electrostatic forces significantly affect binder-aggregate 90# binder for asphalt (37.76, 44.86 77.63) mJ/m2, respectively.