Research on self-healing behavior of asphalt modified by polyurea elastomer containing dynamic disulfide/diselenide bond

Yang, Li; Liu, Tao; Zenglin, Tian; Pei, Jianzhong; Zhang, Mingliang; Zhenguo, Wang

doi:10.1016/j.eurpolymj.2023.111990

Cited by 17 publications

(6 citation statements)

References 45 publications

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“…In order to explore the influence of PUA addition on the aging resistance of asphalt binder, rheological properties and chemical characterization of asphalt with different aging degrees were tested. Previous studies have found that modified asphalt has good self‐healing ability when the content of self‐healing elastomer is 3%–5% 5,50,51 . Therefore, this study selected 4% PUA modified asphalt and base asphalt (BA) as the test objects.…”

Section: Resultsmentioning

confidence: 99%

“…Previous studies have found that modified asphalt has good self-healing ability when the content of self-healing elastomer is 3%-5%. 5,50,51 Therefore, this study selected 4% PUA modified asphalt and base asphalt (BA) as the test objects.…”

Section: Aging Resistancementioning

confidence: 99%

“…At the same time, the superposition of vehicle loads poses challenges to the service life of asphalt pavement 3,4 . Road researchers have developed an asphalt self‐healing accelerator using dynamic chemical bond recombination and the designability of polyurethane materials 5–7 . However, the rheological properties and aging resistance of asphalt modified by this self‐healing accelerator based on dynamic chemical bond are still unclear.…”

Section: Introductionmentioning

confidence: 99%

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Rheological properties and aging resistance of self‐healing polyurea elastomer modified asphalt

Li,

Zhang,

et al. 2024

Polymer Engineering & Sci

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Polymer modified asphalt containing dynamic chemical bonds has the potential to increase the service life of asphalt pavement due to its excellent self‐healing ability. The effect of this self‐healing accelerator with dynamic chemical bond on the rheological properties and aging resistance of asphalt binder is still unclear. In this study, a self‐healing polyurea elastomer (PUA) modified asphalt containing dynamic disulfide bonds was prepared. The high‐ and low‐temperature performance and fatigue resistance of PUA modified asphalt were studied through multiple stress creep, low‐temperature bending beam rheometer, mechanical glass transition temperature, and linear amplitude scanning tests. Moreover, considering the service environment of asphalt over a wide temperature range (−30–70°C), three rheological aging indices (RAI) were proposed. At the same time, the aging resistance of PUA modified asphalt was evaluated by chemical aging index (CAI) based on carbonyl and sulfoxide groups. Finally, a linear relationship is established between RAI and CAI over a wide temperature range. The experimental results show that self‐healing accelerators can increase the resistance to permanent deformation of asphalt by 47.41% and the fatigue resistance by 88.54%. The S value of PUA modified asphalt decreased by at most 33.21% and the m value increased by at most 35.23% compared with BA at −18°C. Moreover, PUA can improve the long‐term thermal oxygen aging resistance of asphalt binders by at least 38.33% over a wide temperature range.Highlights Rheological properties of self‐healing polyurea elastomer modified asphalt. Aging resistance of self‐healing polyurea elastomer modified asphalt. Proposed rheological aging indices for different temperature ranges. Clarified the correlation between chemical–rheological aging indices.

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Section: Resultsmentioning

confidence: 99%

Section: Aging Resistancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rheological properties and aging resistance of self‐healing polyurea elastomer modified asphalt

Li,

Zhang,

et al. 2024

Polymer Engineering & Sci

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“…Pavement self-healing ability is considered a useful method for pavement maintenance management [11]. By adding self-healing materials can increase the service life of asphalt pavement [12]. Self-healing capsules mixed into asphalt mixtures can improve healing over time [13].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

The role of addition of calcium alginate microcapsules on permanent deformation of AC–WC natural asphalt Buton stone in Indonesia

Desvita

Djakfar

Wisnumurti

et al. 2023

EEJET

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This paper discusses natural asphalt deposits of Buton stone (asbuton) in Indonesia are very abundant, but the characteristics of asbuton are not yet suitable for road applications. So that the use of asbuton as a binder needs to be added with additives that can react independently to overcome the permanent deformation such as the addition of calcium alginate microcapsules to the asphalt mixture. The purpose of this study was to determine the effect of adding calcium alginate microcapsules to the permanent deformation of AC-WC with asbuton. The current problem is that road pavements are not able to heal themselves when cracks start to occur, so additional materials are needed that can stimulate self-healing to occur so that the cracks that have started to occur can be closed again even though it takes time so that the self-healing process can occur. The microcapsules are made with the main ingredients of water, sunflower oil, sodium alginate (C6H7O6Na) and calcium chloride solvent (CaCl2), which are encapsulated and embedded in the asphalt mixture as a material that can restore the structural function by a healing method self healing. The research method uses true experimentally. Specimen variations in the study were the addition of calcium alginate microcapsules of 0 %, 1 %, 1.5 %, 2 %. Wheel Tracking Testing was carried out with the AASHTO Standard: T 32-11 and CAL Testing with the Tex-245-F 2014 standard. The results showed that with the addition of calcium alginate microcapsules, there was no significant contribution; better than microcapsules, the mixture decreases in the number of passes so that the mixture is easy to change shape rutting. However, adding calcium alginate microcapsules can reduce the value of weight loss, causing the adhesion of the asphalt mixture to increase

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“…The amounts of sulfur and various disulfide/polysulfide ratios have an impact on the mechanical properties and self-healing efficiencies of the elastomer [80]. Additionally, the effects of chemical bond types and synthesis methods have also been studied [81].…”

Section: Disulfide Exchange Reactionmentioning

confidence: 99%

Recent Progress in the Field of Intrinsic Self-Healing Elastomers

Yang,

Wu,

et al. 2023

Polymers

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Self-healing elastomers refer to a class of synthetic polymers that possess the unique ability to autonomously repair from internal and external damages. In recent years, significant progress has been made in the field of self-healing elastomers. In particular, intrinsic self-healing elastomers have garnered a great deal of attention. This mini-review outlines recent advancements in the mechanisms, preparation methods, and properties of various intrinsic self-healing elastomers based on non-covalent bond systems, reversible covalent bond systems, and multiple dynamic bond composite systems. We hope that this review will prove valuable to researchers in order to facilitate the development of novel strategies and technologies for preparing high-performance self-healing elastomers for advanced applications.

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Research on self-healing behavior of asphalt modified by polyurea elastomer containing dynamic disulfide/diselenide bond

Cited by 17 publications

References 45 publications

Rheological properties and aging resistance of self‐healing polyurea elastomer modified asphalt

Rheological properties and aging resistance of self‐healing polyurea elastomer modified asphalt

The role of addition of calcium alginate microcapsules on permanent deformation of AC–WC natural asphalt Buton stone in Indonesia

Recent Progress in the Field of Intrinsic Self-Healing Elastomers

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