Investigation of Viscoelastic Properties of Polymer-Modified Asphalt at Low Temperature Based on Gray Relational Analysis

As the investigation indexes of low-temperature viscoelastic properties polymer-modified asphalt (PMA) are unclear at present, in this paper, creep stiffness (S), rate (m), continuous classification temperature (TC), ΔTC, m/S, relaxation time (λ), and dissipation energy ratio (Wdt/Wst) were taken as a comparison sequence. The maximum flexural tensile strain (εB) porous mixture (PAM) bending test was selected reference Gray relational analysis used to investigate PMA’s based on beam rheometer (BBR). results show certain contradictions investigating PMA when only considering deformation capacity or stress capacity. modulus should be considered selecting PMA. When rheological method is evaluate polymer modified asphalt, TC m/S preferred. S m contradictory, ΔTC can determine whether performance dominated by m. result better guide construction pavement areas with low temperatures. Asphalt quickly accurately avoid waste resources.