Study on the Comparison of Zero Shear Viscosity and Capillary Viscosity of Road Asphalt

The penetration and the penetration index, softening point of 60 °C and equivalent softening point, dynamic viscosity, dynamic shear rheological test, zero shear viscosity and multiple stress creep recovery modified asphalt high temperature performance of high viscosity test were evaluated; the use of penetration, low temperature ductility, equivalent brittle point and bending beam creep test on the low temperature performance was evaluated by study; penetration index PI, penetration index PVN viscosity and viscosity temperature index VTS, viscosity temperature curve of temperature sensing properties were evaluated; aging test and atomic force microscopy experiment was conducted to study the anti- ageing performance of the rolling thin film oven heating, pressure test. The stress in asphalt pavement structure based on a comparative study of the matrix asphalt, SBS, high strength, high viscosity modified asphalt and other 8 kinds of road asphalt 80 °C zero shear viscosity, capillary viscosity, and the test method of zero shear viscosity is simplified. Test and analysis show that the high viscosity modified asphalt in the first region and Newton common asphalt in pavement structure under uniform shear rate, bond properties of zero shear viscosity can be more reasonable to characterize asphalt in pavement structure.