Evaluation of Fatigue Behavior of Bitumen Binders by the Linear Amplitude Sweep Test: Failure Criteria and Fatigue Parameters

IF 0.58 Q4 Materials Science

Polymer Science, Series D Pub Date : 2025-09-17 DOI:10.1134/S1995421225700406

V. N. Gorbatova, I. V. Gordeeva, T. V. Dudareva, I. A. Krasotkina, A. A. Berlin

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Abstract

The influence of test temperature, aging, and modification of bitumen PG58-28 with active powder of discretely devulcanized rubber on damage accumulation rate curves; fatigue parameters N_f, FREI, and F; and postpeak slope of the τ(γ) curve is analyzed on the basis of processing of experimental data of the linear amplitude sweep test using three models based on the VECD theory, five destruction (failure) criteria, and two variants of calculating the α parameter (19 variants in total). It is shown that, at small deformations, parameter N_f decreases with decreasing temperature, but increases after operational aging, while parameters FREI and F change in the same direction with aging and decreasing test temperature—parameter F increases, and parameter FREI decreases. The modification resulted in a decrease in F, an increase in FREI, and a decrease in the slope of the F and FREI curves versus temperature, as well as a decrease in the postpeak slope of the τ(γ) curve.

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用线性振幅扫描试验评价沥青粘结剂的疲劳行为：失效准则和疲劳参数

试验温度、老化及改性沥青PG58-28对损伤累积率曲线的影响疲劳参数Nf、FREI、F；在对线性振幅扫描试验数据进行处理的基础上，采用基于VECD理论的三种模型、五种破坏（破坏）准则和两种计算α参数的变体（共19种变体），分析了τ(γ)曲线的峰后斜率。结果表明：在小变形情况下，参数Nf随温度的降低而减小，但在运行时效后增大；参数FREI和参数F随时效和试验温度的降低而变化方向一致，参数F增大，参数FREI减小。修改导致F减小，FREI增加，F和FREI曲线随温度的斜率减小，以及τ(γ)曲线的峰后斜率减小。

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来源期刊

Polymer Science, Series D Materials Science-Polymers and Plastics

CiteScore

0.80

自引率

0.00%

发文量

期刊介绍： Polymer Science, Series D publishes useful description of engineering developments that are related to the preparation and application of glues, compounds, sealing materials, and binding agents, articles on the adhesion theory, prediction of the strength of adhesive joints, methods for the control of their properties, synthesis, and methods of structural modeling of glued joints and constructions, original articles with new scientific results, analytical reviews of the modern state in the field.