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Indexed by:期刊论文

Date of Publication:2011-12-01

Journal:ENGINEERING FRACTURE MECHANICS

Included Journals:Scopus、SCIE、EI

Volume:78

Issue:17

Page Number:2978-2990

ISSN No.:0013-7944

Key Words:Concrete; Fracture process zone; Digital image correlation technique; Crack opening displacement; Fracture process zone length

Abstract: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.