Research on the different test methods of asphalt viscosity

The paper measured the apparent viscosity value of three different kinds of asphalt in different settings through a large number of testing,at the same time,compared 60 ℃ apparent viscosity and dynamic viscosity through collecting another 91 species matrix asphalt.Test results show that the apparent viscosity of asphalt gradually decreases as the shear rate increasing at the same temperature,the temperature sensitivity of viscosity is also improved as the shear rate increasing at the same time;In the statistical sense,asphalt 60 ℃dynamic viscosity value and variation coefficient C.V measured by vacuum decompression capillary is higher than apparent viscosity value measured Brookfidld,so apparent viscosity value instead of dynamic viscosity value is not advisable.