Abstract
This study elaborates on methods for assessing the material property called zero shear-rate viscosity (ZSV) in asphalt concrete based on shear frequency sweep testing. The purpose of ZSV assessment is for linear viscoelastic permanent deformation modeling. The basic approach was to fit parameters of the Laplace-transformed Burger’s model to the measured shear dynamic modulus data. This method produced multiple solutions, although an approximate measure of the minimum ZSV could be estimated. Therefore, extrapolation was necessary to assess the frequency-independent ZSV based on the measured frequency sweep data. The method was complemented with the simplified Cross extrapolation model that was successfully fitted to the measured data. The extended method also produced multiple solutions, although the minimum ZSV could be assessed unambiguously. The results were in accordance with expectations based on measured dynamic shear modulus and phase angle.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
