Influence of aggregate chemical composition on the demulsification rate of emulsified asphalt

Efficient demulsification is vital for the application of emulsified asphalt in road construction. In this paper, effects main chemical components aggregates (CaCO 3 , MgO, Fe 2 O SiO Al ) on process were studied by experiment and simulation using a Gompertz model. The findings indicate that surface energy, specific area, pH are most important factors influencing speed asphalt. choice aggregate’s can accelerate speed, with acceleration effect anionic (SDBS) MgO cationic (STAC) both reaching 60%. fit between model experimental viscosity curve greater than 0.93, which verifies utility approach studying asphalt-aggregate mortar changes. A evaluation function φ(t) proposed based parameters When id="m2">φ(t) close to 1, fully demulsified, setting id="m3">φ(t)=1 allows time be calculated from parameters.