The asphaltenes dispersion is controlled by the above mentioned elements in bitumen. Gel type bitumen have a higher viscosity.īitumen consist of resins, aromatics and some form of saturated oil after their manufacture. Aggregation is the factor that governs the viscosity of gel type bitumen. As the asphaltenes content reduces, the viscosity of bitumen also decreases. In bitumen sol, the asphaltenes miscelles are dispersed in maltenes continuum. The bitumen is a composition of two factors ( Structure of Bitumen) asphaltenes miscelles and maltenes. The two factors that define the viscosity of bitumen are: Under the action of force, the fluid reflects higher resistance when the viscosity is high. The resistance of a liquid in flowing is defined as the viscosity of that fluid. □ Reading time: 1 minute Introduction to Viscosity and Rheology of Bituminous Materials
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