Analysis of Fatigue and Healing Properties of Conventional Bitumen and Bio-Binder for Road Pavements.

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ID: 86057
2020
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Ranked #157 of 812 articles by views in Materials (Basel, Switzerland)

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Abstract
The analysis of fatigue behavior of bituminous binders is a complex issue due to several time-temperature dependent phenomena which interact simultaneously, such as damage accumulation, viscoelasticity, thixotropy, and healing. The present research involves rheological measurements aimed at evaluating the fatigue behavior and compares the self-healing capability of two plain bitumen and a bio-binder obtained by partially replacing one of the plain bitumen with a renewable bio-oil. Healing potential was assessed by means of an experimental approach previously implemented for modified bitumen and bituminous mastic and based on the use of a dynamic shear rheometer (DSR). The effects of some variables such as bitumen type, bio-oil addition, and aging on the healing potential of binders were taken into account. Results showed that the above-mentioned method for healing analysis is also suitable for conventional and bio-add binders. Outcomes of the experimental investigation highlight that fatigue and self-healing are mainly dependent on binder consistency and also affected by aging. Finally, the addition of bio-oil may induce even better performances in terms of healing potential compared to conventional bitumen, especially in aged condition.
Reference Key
gaudenzi2020analysismaterials Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Gaudenzi, Elena;Cardone, Fabrizio;Lu, Xiaohu;Canestrari, Francesco;
Journal Materials (Basel, Switzerland)
Year 2020
DOI
E420
URL
Keywords
fatigue self-healing bio-binder bitumen

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