Study of the effect of foaming water on the cohesion/adhesion of foam asphalt
This paper investigates the mechanism of foaming water on asphalt adhesion and cohesion using a combination of macro and microscopic methods such as molecular dynamics simulations,water boiling tests,surface free energy tests and pull-out tests.The results show that water molecules repel asphalt mole-cules on the molecular scale,thus weakening the interfacial energy between asphalt;on the macroscopic scale,it is found that the anti-boiling spalling of foam asphalt and aggregate is reduced,the foaming water is detrimental to the adhesion and cohesion of asphalt,and the more foaming water there is,the more obvi-ous the damage to the adhesion and cohesion of asphalt.The interfacial energy of foam asphalt is highly correlated with its cohesive and adhesive properties,and the multi-scale effects of foaming water on the co-hesive/adhesive properties of foam asphalt can be explained at macroscopic and microscopic molecular scales.
foam asphaltmolecular simulationwater boiling testsurface free energy testdrawing test
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