{"title":"An investigation on the healing potential of warm mix asphalt binders using linear amplitude sweep test","authors":"Sunny Kumar, Deepa Sasidharan, Atanu Behera, Bharath Gottumukkala, Rakesh Kumar","doi":"10.1007/s11043-025-09784-x","DOIUrl":null,"url":null,"abstract":"<div><p>Discrepancies between laboratory-based predictions and field performance of asphalt mixes in terms of fatigue life can be reduced by taking into account the self-healing characteristics of asphalt in experimental protocols. In this study, an unmodified binder and a polymer-modified binder are used to compare their relative performance in terms of healing both in the presence and absence of a warm mix additive (WMA). During the test, rest periods of varied durations (10, 15, and 30 minutes) are introduced at 25%, 50%, and 75% of damage levels prior to reaching failure to examine their influence on the further evolution of damage. The addition of the WMA resulted in an improved healing index of both unmodified and modified binders at all the damage levels pre-failure. The results suggest the potential of WMA additives to enhance the healing of bituminous mixes, in addition to their established benefits in lowering temperatures.</p></div>","PeriodicalId":698,"journal":{"name":"Mechanics of Time-Dependent Materials","volume":"29 2","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mechanics of Time-Dependent Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11043-025-09784-x","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CHARACTERIZATION & TESTING","Score":null,"Total":0}
引用次数: 0
Abstract
Discrepancies between laboratory-based predictions and field performance of asphalt mixes in terms of fatigue life can be reduced by taking into account the self-healing characteristics of asphalt in experimental protocols. In this study, an unmodified binder and a polymer-modified binder are used to compare their relative performance in terms of healing both in the presence and absence of a warm mix additive (WMA). During the test, rest periods of varied durations (10, 15, and 30 minutes) are introduced at 25%, 50%, and 75% of damage levels prior to reaching failure to examine their influence on the further evolution of damage. The addition of the WMA resulted in an improved healing index of both unmodified and modified binders at all the damage levels pre-failure. The results suggest the potential of WMA additives to enhance the healing of bituminous mixes, in addition to their established benefits in lowering temperatures.
期刊介绍：
Mechanics of Time-Dependent Materials accepts contributions dealing with the time-dependent mechanical properties of solid polymers, metals, ceramics, concrete, wood, or their composites. It is recognized that certain materials can be in the melt state as function of temperature and/or pressure. Contributions concerned with fundamental issues relating to processing and melt-to-solid transition behaviour are welcome, as are contributions addressing time-dependent failure and fracture phenomena. Manuscripts addressing environmental issues will be considered if they relate to time-dependent mechanical properties.
The journal promotes the transfer of knowledge between various disciplines that deal with the properties of time-dependent solid materials but approach these from different angles. Among these disciplines are: Mechanical Engineering, Aerospace Engineering, Chemical Engineering, Rheology, Materials Science, Polymer Physics, Design, and others.
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