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

Zhongcai Huang, Rong Lu (), Zhiyu Fu, Jingxiao Li, Pengfei Li, Di Wang (), Ben Wei, Weining Zhu, Zujian Wang and Xinyu Wang
Additional contact information
Zhongcai Huang: Guangxi Communications Investment Group Corporation Ltd., Nanning 530022, China
Rong Lu: School of Highway, Chang’an University, Xi’an 710064, China
Zhiyu Fu: School of Highway, Chang’an University, Xi’an 710064, China
Jingxiao Li: School of Highway, Chang’an University, Xi’an 710064, China
Pengfei Li: School of Highway, Chang’an University, Xi’an 710064, China
Di Wang: Department of Civil Engineering, Aalto University, 02150 Espoo, Finland
Ben Wei: Guangxi Communications Investment Group Corporation Ltd., Nanning 530022, China
Weining Zhu: Guangxi Communications Investment Group Corporation Ltd., Nanning 530022, China
Zujian Wang: Guangxi Communications Investment Group Corporation Ltd., Nanning 530022, China
Xinyu Wang: Guangxi Communications Investment Group Corporation Ltd., Nanning 530022, China

Sustainability, 2023, vol. 15, issue 8, 1-14

Abstract: As the investigation indexes of low-temperature viscoelastic properties of polymer-modified asphalt (PMA) are unclear at present, in this paper, the creep stiffness ( S ), creep rate ( m ), low-temperature continuous classification temperature ( T C ), Δ T C , m/S , relaxation time ( λ ), and dissipation energy ratio ( W d t / W s t ) were taken as a comparison sequence. The maximum flexural tensile strain ( ε B ) of porous asphalt mixture (PAM) in a low-temperature bending test was selected as a reference sequence. Gray relational analysis was used to investigate the PMA’s low-temperature viscoelastic properties based on a bending beam rheometer (BBR). The results show certain contradictions in investigating the low-temperature properties of PMA when only considering the low-temperature deformation capacity or the stress relaxation capacity. The modulus and relaxation capacity should be considered when selecting the investigation indexes of the low-temperature viscoelastic properties of PMA. When rheological method is used to evaluate the low-temperature of polymer modified asphalt, T C and m/S are preferred. When only S or m is contradictory, m should be preferred. Δ T C can determine whether the low-temperature performance of PMA is dominated by S or m . The result can better guide the construction of asphalt pavement in areas with low temperatures. Asphalt can be selected quickly and accurately to avoid the waste of resources.

Keywords: road engineering; polymer-modified asphalt; gray relational analysis; low temperature; viscoelastic characteristics; evaluation index (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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