Investigation of the Fracture Process of Rubberized Concrete by Ficticious Crack Model and Acoustic Emmission Analysis

Title: Investigation of the Fracture Process of Rubberized Concrete by Ficticious Crack Model and Acoustic Emmission Analysis
Author(s): Yamei ZHANG, Chao WANG, Zhe ZHAO
Paper category : conference
Book title: 2nd International Conference on Waste Engineering and Management - ICWEM 2010
Editor(s): J.Zh. Xiao, Y. Zhang, M.S. Cheung and Reuben P. K. Chu
Print-ISBN: 978-2-35158-102-5
e-ISBN: 978-2-35158-103-2
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 188 - 198
Total Pages: 11
Nb references: 13
Language: English

Abstract: According to the results of the three-point bending tests of rubberized concrete and plain concrete, the softening parameters (total fracture energy (GF), initial fracture energy (Gf), and tensile strength (ft)) for concrete material are obtained. With ABAQUS software, a bilinear softening fictitious crack model was used to simulate the crack propagation process.
Compared with the data of Acoustic Emission (AE) monitored in the process of bending test, the increase of AE hit count has a similar trend with the increase of energy dissipation in FEM simulation. According to the AE location, it is also found that, in the propagation path of crack, the AE events increase in the similar tendency as energy dissipation. For the two concretes, both methods indicate that the rubberized concrete has a better fracture property.
The consistency of the two methods verifies the effectiveness of the bilinear softening fictitious crack model and reveals the facture process of concrete.

Online publication: 2011-01-25
Publication type : full_text
Public price (Euros): 0.00