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

页码：154 / 169

页数：16

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