Investigation on fracture parameters of concrete through optical crack profile and size effect studies

被引：31
|
作者：
Trivedi, N. [1 ]
Singh, R. K. [1 ]
Chattopadhyay, J. [1 ]
机构：
[1] Bhabha Atom Res Ctr, Reactor Safety Div, Bombay 400085, Maharashtra, India
来源：
ENGINEERING FRACTURE MECHANICS | 2015年 / 147卷
关键词：
Fracture process zone; Size effect; Crack opening displacement; Digital Image Correlation; Optical Crack Profile; ENERGY;
D O I：
10.1016/j.engfracmech.2015.08.027
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
In this paper, Digital Image Correlation (DIC) technique has been used to map the full field of displacement and strain for visualizing the fracture growth, fracture propagation and formation of Fracture Process Zone (FPZ) in notched concrete beams under bending. Further, for exact quantification of concrete fracture parameters such as crack opening displacement, characteristics of FPZ and fracture energy, a new scheme called Optical Crack Profile (OCP) originated through DIC experiments, is developed. In addition, a comprehensive analysis of fracture parameters estimated from Bazant size effect laws, Jenq-Shah model and OCP technique have been carried out. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：119 / 139
页数：21
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