Abstract
AbstractThe asphalt mixture, AC - 13 C, is aged in an oven for five different periods, and then, stress relaxation tests are conducted at −5°C on the aged samples to study the effect of aging on the relaxation of the asphalt mixtures and to build the relaxation modulus of the asphalt mixture coupled with the aging factor. The relaxation modulus curves of the asphalt mixtures with different aged degrees show that there exists equivalence between the ageing degree and relaxation time. The shift factor formula between the aging degree and the relaxation time is obtained based on free volume theory of the material viscosity through hypothesizing that there exists a linear relationship between the fractional free volume and the aging degree. The relaxation modulus master curve is nonlinear, fitted with Burgers model and general Maxwell models with different element numbers. The general Maxwell model was superior to the Burgers model in expressing the obtained relaxation modulus master curve; the more the eleme...
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 callMore From: Journal of Highway and Transportation Research and Development (English Edition)
Disclaimer: 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.
