Fracture performance and cracking mechanism of large-particle size hydraulic asphalt concrete at different temperatures

被引：2
作者：
He, Jianxin [1 ,2 ,3 ]
Lu, Jiannan [4 ]
Yang, Wu [1 ,2 ,3 ]
Liu, Liang [1 ,2 ,3 ]
Yang, Haihua [1 ,2 ,3 ]
机构：
[1] Xinjiang Agr Univ, Coll Hydraul & Civil Engn, Urumqi 830052, Peoples R China
[2] Xinjiang Hydraul Engn Geotech & Struct Engn Techno, Urumqi 830052, Peoples R China
[3] Corps Key Lab Dike Engn Safety & Disaster Prevent, Urumqi 830004, Peoples R China
[4] Xinjiang Water Resources & Hydropower Survey & Des, Urumqi 830000, Peoples R China
来源：
ENGINEERING FRACTURE MECHANICS | 2024年 / 311卷
基金：
中国国家自然科学基金;
关键词：
Hydraulic asphalt concrete; Large-particle size aggregate; Fracture toughness; Crack expansion trajectory; Cracking mechanism; BENDING TEST; RESISTANCE;
D O I：
10.1016/j.engfracmech.2024.110530
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
This study investigates the fracture properties of large-particle size hydraulic asphalt concrete (LPSHAC) at various temperatures using pre-cracked trabecular bending tests and digital image correlation (DIC). Results show that temperature significantly affects LPSHAC's fracture properties, with the energy release rate and J-integral fracture toughness increasing initially and then decreasing as temperature rises. Horizontal strain better characterizes damage progression at higher temperatures. Crack curvature coefficients at 0 degrees C and 20 degrees C increased by 8.2 % and 30.1 % compared to that at -20 degrees C, while the aggregate fracture area ratio rose as the temperature decreased from 20 degrees C to -20 degrees C.
引用
收藏
页数：12
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