期刊
ENGINEERING FRACTURE MECHANICS
卷 78, 期 17, 页码 2978-2990出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2011.08.016
关键词
Concrete; Fracture process zone; Digital image correlation technique; Crack opening displacement; Fracture process zone length
类别
资金
- National Natural Science Foundation [50878036]
- Creative Research Groups of the National Natural Science Foundation [51121005]
- National Basic Research Program (973 Program) of the People's Republic of China [2009CB623200]
This paper presents an experimental investigation on the properties of the fracture process zone (FPZ) in concrete using the digital image correlation (DIC) technique. Based on the experimental results, it is found that the FPZ length increases during crack propagation but decreases after the FPZ is fully developed. The FPZ length at the peak load and the maximum FPZ length increase with an increase in specimen height, but decrease by increasing the notch depth to specimen height ratio. It is also found that the crack extension length at the peak load is about 0.25 times the ligament length. (C) 2011 Elsevier Ltd. All rights reserved.
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