Fracture damage evaluation of asphalt mixtures using Semi-Circular Bending test based on fracture energy approach

被引：76
|
作者：
Saha, Gourab [1 ]
Biligiri, Krishna Prapoorna [1 ]
机构：
[1] Indian Inst Technol, Dept Civil Engn, Kharagpur 721302, W Bengal, India
来源：
ENGINEERING FRACTURE MECHANICS | 2015年 / 142卷
关键词：
Asphalt; Fracture damage parameters; Dissipated fracture energy; Semi-Circular Bending test; Stress relaxation; CRACK-PROPAGATION; RESISTANCE; SIMULATION; CONCRETE;
D O I：
10.1016/j.engfracmech.2015.06.009
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
This research investigated fracture damage of conventional dense and modified gap-and open-graded asphalt mixes using Semi-Circular Bending test. Fracture damage parameters were formulated and deduced from load-crack mouth opening displacement relationship and used to estimate fracture damage based on Elastic Plastic Fracture Mechanics. Dissipated energy for modified mixes were 1.5-2 times greater than conventional mixes. Damage parametric models were developed based on material properties' energy based behaviour. It was clearly found that Semi-Circular Bending test is a truly promising quality control tool, and the Elastic Plastic Fracture Mechanics concept is a potential numerical approach towards comprehensively understanding fracture mechanism. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：154 / 169
页数：16
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