ArticleMaterials (Basel, Switzerland)2025
Influence of Aging and Salt-Alkali Coupling on the Fatigue and Self-Healing Behavior of Graphene Oxide-Modified Asphalt.
Article in Materials (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Long-Term Water Stability Analysis of Graphene-Composite-Modified Permeable Asphalt Mixture.Materials (Basel, Switzerland) · 2025Article
- Sustainable Pavement Materials: Design, Application, and Performance Evaluation.Materials (Basel, Switzerland) · 2025Article
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6 authors.
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Abstract
The harsh environments in saline-alkaline areas and high-altitude regions with intense ultraviolet radiation pose great challenges to the durability of asphalt pavements. The fatigue performance of asphalt binder significantly determines the actual service life of asphalt pavements. Existing studies have predominantly focused on the impact of individual environmental factors (e.g., aging and saline-alkaline erosion) on asphalt performance, yet there remains a notable research gap in the systematic analysis of asphalt's fatigue and self-healing behavior under coupled multi-factor interactions, particularly regarding the synergistic effects of UV aging and saline-alkaline conditions. Therefore, it is of great importance to understand the influence rules of the coupling effect of aging and salt-alkaline characteristics on the properties of asphalt materials. In this study, 70# base asphalt and GO-modified asphalt were taken as the research objects. Frequency sweep tests, linear amplitude sweep (LAS) tests, and LAS-based healing tests were conducted using a dynamic shear rheometer. The fatigue and self-healing properties of the two asphalt materials under different aging conditions and aging and salt-alkali coupling effects were analyzed based on the viscoelastic continuum damage theory. The results showed that the degree of aging can increase the stress peak of asphalt materials under small strains and also increase their stress attenuation rate. Except for short-term aging and salt-alkali effects, the aging and salt-alkali coupling effects generally further reduce the stress peaks of asphalt materials. Aging can increase the fatigue life of asphalt and increase the fatigue life attenuation rate of asphalt. The aging and salt-alkali coupling effects will reduce the fatigue life of asphalt and increase the decline rate of the asphalt fatigue life. The self-healing efficiency of asphalt is affected by the degree of aging, and the aging and salt-alkali coupling effects further reduce the self-healing efficiency of asphalt materials. This paper elucidates the influence mechanisms of intense UV irradiation and saline-alkaline environments on GO-modified asphalt, providing theoretical and practical references for its future engineering applications in harsh environmental conditions.
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