Investigation of Viscoelastic Properties of Polymer-Modified Asphalt at Low Temperature Based on Gray Relational Analysis
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2023-04
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en
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14
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Sustainability (Switzerland), Volume 15, issue 8
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 (TC), ΔTC, m/S, relaxation time ((Formula presented.)), and dissipation energy ratio ((Formula presented.)) were taken as a comparison sequence. The maximum flexural tensile strain (εB) 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, TC and m/S are preferred. When only S or m is contradictory, m should be preferred. ΔTC 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.Description
Funding Information: This research was funded by the Scientific and Technological Development Project of Guangxi Communications Investment Group Corporation Ltd., grant number 2021-001. Publisher Copyright: © 2023 by the authors.
Keywords
evaluation index, gray relational analysis, low temperature, polymer-modified asphalt, road engineering, viscoelastic characteristics
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Citation
Huang, Z, Lu, R, Fu, Z, Li, J, Li, P, Wang, D, Wei, B, Zhu, W, Wang, Z & Wang, X 2023, ' Investigation of Viscoelastic Properties of Polymer-Modified Asphalt at Low Temperature Based on Gray Relational Analysis ', Sustainability (Switzerland), vol. 15, no. 8, 6858 . https://doi.org/10.3390/su15086858