Multi-Scale Mechanisms of Polyphenol-Grafted Submicron Mineral Fillers Regulating Fracture Resistance of Asphalt Mixtures across Oxidative Aging States

IF 9.1 1区工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Computer-Aided Civil and Infrastructure Engineering Pub Date : 2026-04-21 DOI:10.1016/j.cacaie.2026.100066

Jiao Jin, Shuai Liu, Hao Xu, Hanbo Li, Yao Deng, Kunfeng Ma, Mingzeng Zhang, Tao Zhu, Huiwen Chen, Yalong Zhang, Zhuang Wen, Jianlong Zheng

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Abstract

Oxidative aging stiffens asphalt mixtures and accelerates cracking, and aging-induced polarity shifts weaken the asphalt-mineral interface. This study grafts submicron basalt fillers with catechol or gallic acid and incorporates them into asphalt mixtures to regulate aging-related damage. Fracture is evaluated by semi-circular bending with simultaneous acoustic emission (AE) and digital image correlation. RA and AF features are extracted from AE; a Gaussian mixture model in RA-AF space identifies tensile, shear, and boundary events using posterior probability ≥ 0.60, avoiding empirical divider lines. Lower temperature and greater aging shift the response toward brittleness, with higher peak load, reduced peak displacement, and steeper post-peak softening. Polyphenol-grafted fillers moderate the post-peak drop and reduce high-amplitude bursts, indicating more gradual damage accumulation. Across all conditions, tensile events dominate (51.2%-86.4%), shear events are secondary (11.5%-43.4%), and boundary events rise to ∼31% in specific temperature-aging combinations. Molecular dynamics simulations show pronounced interfacial segregation of asphalt fractions (relative peaks ∼4-7 near the mineral surface); gallic-acid functionalization yields smoother, more consistent profiles across aging states, implying improved microstructural stability. Overall, polyphenol-grafted submicron fillers—especially gallic acid—mitigate aging-related cracking by stabilizing interfacial organization and reshaping the fracture damage sequence.

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多酚接枝亚微米矿物填料跨氧化老化状态调节沥青混合料抗断裂性能的多尺度机制

氧化老化使沥青混合物变硬并加速开裂，老化引起的极性变化削弱了沥青-矿物界面。本研究将亚微米玄武岩填料与儿茶酚或没食子酸进行嫁接，并将其掺入沥青混合物中，以调节与老化相关的损伤。采用半圆弯曲同时声发射（AE）和数字图像相关评价裂缝。从AE中提取RA和AF特征；RA-AF空间中的高斯混合模型使用≥0.60的后验概率识别拉伸、剪切和边界事件，避免了经验分割线。较低的温度和较大的时效使响应转向脆性，峰值载荷增大，峰值位移减小，峰后软化更陡。多酚接枝填料缓和了峰后的下降，减少了高振幅的爆发，表明损伤的积累更加缓慢。在所有条件下，拉伸事件占主导地位（51.2%-86.4%），剪切事件是次要的（11.5%-43.4%），在特定温度-时效组合中，边界事件上升到31%。分子动力学模拟显示沥青组分的界面偏析明显（相对峰在矿物表面附近~ 4-7）；没食子酸功能化在不同的老化状态下产生更平滑、更一致的轮廓，这意味着提高了微观结构的稳定性。总的来说，多酚接枝的亚微米填料——尤其是没食子酸——通过稳定界面组织和重塑断裂损伤序列来减轻与老化相关的裂缝。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Computer-Aided Civil and Infrastructure Engineering 工程技术-工程：土木

CiteScore

17.60

自引率

19.80%

发文量

146

审稿时长

1 months

期刊介绍： Computer-Aided Civil and Infrastructure Engineering stands as a scholarly, peer-reviewed archival journal, serving as a vital link between advancements in computer technology and civil and infrastructure engineering. The journal serves as a distinctive platform for the publication of original articles, spotlighting novel computational techniques and inventive applications of computers. Specifically, it concentrates on recent progress in computer and information technologies, fostering the development and application of emerging computing paradigms. Encompassing a broad scope, the journal addresses bridge, construction, environmental, highway, geotechnical, structural, transportation, and water resources engineering. It extends its reach to the management of infrastructure systems, covering domains such as highways, bridges, pavements, airports, and utilities. The journal delves into areas like artificial intelligence, cognitive modeling, concurrent engineering, database management, distributed computing, evolutionary computing, fuzzy logic, genetic algorithms, geometric modeling, internet-based technologies, knowledge discovery and engineering, machine learning, mobile computing, multimedia technologies, networking, neural network computing, optimization and search, parallel processing, robotics, smart structures, software engineering, virtual reality, and visualization techniques.