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What are the testing mode in dsr that is comparable with kinematic viscosity of asphalt at 60C? 


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The Dynamic Shear Rheometer (DSR) testing modes that are comparable with the kinematic viscosity of asphalt at 60°C involve conducting frequency sweep tests at different temperatures and temperature ramping at a fixed frequency with various temperature rates . These testing protocols allow for the evaluation of rheological parameters of bituminous binders at different temperature conditions, including low temperatures, which are crucial for understanding the material's behavior. Additionally, the use of a 4 mm parallel plate geometry in the DSR has been proposed to assess low-temperature rheological properties of asphalt binders, ensuring precise and repeatable rheological data by considering testing conditions and instrument limitations . These methods provide insights into the dynamic viscosity of asphalt at 60°C, meeting testing requirements accurately.

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The testing mode in DSR comparable to kinematic viscosity of asphalt at 60°C is the complex modulus measured at low frequencies or corresponding to the 60 s loading time.
Dynamic Shear Rheometer (DSR) tests in the 4-mm configuration can be comparable to the kinematic viscosity of asphalt at 60°C, aiding in performance-based binder selection for road applications.
Frequency sweep test at different temperatures and temperature ramping at a fixed frequency with various temperature rates in DSR are comparable to kinematic viscosity of asphalt at 60°C.
Not addressed in the paper.
Not addressed in the paper.

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How does the dynamic modulus of asphalt mixtures depend on the temperature?4 answersThe dynamic modulus of asphalt mixtures is influenced by temperature. The results from various studies indicate that the dynamic modulus generally decreases with an increase in temperature. The decrease in dynamic modulus with increasing temperature is more pronounced at low frequencies. Additionally, the dynamic modulus of asphalt mixtures is affected by other factors such as loading frequency, mixture density, and asphalt content. The shape parameter of the dynamic modulus master curve, β, changes with temperature and asphalt type, resulting in different dynamic responses. The high temperature performance of asphalt mixtures can be evaluated using the dynamic modulus and rutting resistance tests. Overall, the dynamic modulus of asphalt mixtures is dependent on temperature, and its behavior can be influenced by various factors such as loading frequency, mixture density, and asphalt content.
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