Viscoelastic Properties and Temperature Effects of Super Large Particle Size Asphalt Mixture
JIANG Yingjun
YI Yong
TIAN Tian
ZHANG Yu
FAN Jiangtao
Abstract：To accurately characterize the dynamic viscoelastic mechanical response of super large particle size asphalt mixture(LSAM-50)flexible subgrade pavement,LSAM-50 dynamic modulus test was conducted to analyze the effect of temperature on LSAM-50 viscoelastic parameters.The master curve of viscoelastic parameters was constructed based on the generalized logarithmic Sigmoidal model.The LSAM-50 viscoelastic principal structure based on the generalized Maxwell model was constructed.The results show that temperature has a significant effect on the viscoelastic parameters of LSAM-50,and the aggregate embedding force dominates the change of LSAM-50's modulus when the temperature increases.The dynamic modulus and storage modulus decrease gradually with the increase of temperature and then stabilize.As LSAM-50 has larger particle size and aggregate embedding force,LSAM-50 has stronger resistance to deformation at high temperature compared with AC-20 and AC-13.The generalized Maxwell model can be used to construct LSAM-50 viscoelastic relationship with correlation not lower than 0.99.
Keywords：super large particle size asphalt mixturedynamic modulusmaster curvelinear viscoelasticity
Publication Date：2024-04-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 327-331,342 )