Mixed-Mode Fracturing Characteristics of Asphalt Concrete at Low-Temperature Considering Random Spatial Combinations of Aggregates and Voids

IF 3.2 2区材料科学 Q2 ENGINEERING, MECHANICAL

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-07-28 DOI:10.1111/ffe.70044

Mengzhang Chen, Yongjun Wang, Zedong Zhao, Min Li, Hongbo Zhao, Yingjun Jiang, Jiaolong Ren

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Abstract

Understanding low-temperature cracking is crucial for ensuring the durability of asphalt pavements. Historical investigations have focused on how individual mesostructures influence the low-temperature fracturing characteristics of asphalt concrete. However, the properties of mesostructures extend beyond their geometric features to encompass the variations in spatial configurations among different mesostructures. Clearly, under identical material conditions, the random arrangement of the mesostructure distribution in asphalt concrete significantly affects its resistance to cracking. Therefore, it is crucial to examine the impact of the stochastic distribution of aggregates and voids on the low-temperature fracture characteristics and crack growth in asphalt concrete across various fracture modes. To investigate this, semicircular bending (SCB) tests and discrete element method (DEM) simulations were conducted to analyze the effects of low-temperature fracture toughness and crack distribution in asphalt concrete. The influences of temperature and fracture modes were also examined.

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考虑集料与空隙随机空间组合的沥青混凝土低温混合模式断裂特性

了解低温开裂对保证沥青路面的耐久性至关重要。历史上的研究主要集中在个体细观结构如何影响沥青混凝土的低温断裂特性。然而，介结构的性质超出了它们的几何特征，包括不同介结构之间空间构型的变化。可见，在相同材料条件下，沥青混凝土中细观结构分布的随机性显著影响其抗裂性。因此，研究集料和孔隙的随机分布对不同断裂模式下沥青混凝土低温断裂特征和裂缝扩展的影响至关重要。为此，采用半圆弯曲（SCB）试验和离散元法（DEM）模拟分析了沥青混凝土低温断裂韧性和裂缝分布的影响。研究了温度和断裂方式的影响。

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

Fatigue & Fracture of Engineering Materials & Structures 工程技术-材料科学：综合

CiteScore

6.30

自引率

18.90%

发文量

256

审稿时长

4 months

期刊介绍： Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.