Journal
ENGINEERING FRACTURE MECHANICS
Volume 77, Issue 6, Pages 908-924Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2010.01.018
Keywords
Concrete interface; Acoustic emission; Fracture process zone; Fracture energy
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The fracture behavior of concrete-concrete interface is characterized using acoustic emission (AE). Beams of different sizes having jointed interface between two different strengths of concrete are tested. The results of load, displacement, CMOD. AE-events and AE-energy are analyzed. The width of fracture process zone and damage zone are computed using AE-data and are found to be independent of size. It is observed that, as the difference in compressive strength of concrete on either side of interface increases, the load carrying capacity, number of AE-events, AE-energy, width of fracture process zone and damage zone decreases. (C) 2010 Elsevier Ltd. All rights reserved.
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