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Advances in Materials Science and Engineering
Volume 2015, Article ID 193721, 10 pages
http://dx.doi.org/10.1155/2015/193721
Research Article

Mechanical Behavior of 3D Crack Growth in Transparent Rock-Like Material Containing Preexisting Flaws under Compression

1Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Institute of Safety and Disaster Prevention Engineering, Hohai University, Nanjing, Jiangsu 210098, China
2School of Civil Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China
3School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China
4Water Conservancy Project Planning and Design Departments, Shanghai Investigation Design & Research Institute Co. Ltd., Shanghai 200434, China

Received 23 September 2015; Accepted 22 November 2015

Academic Editor: Liviu Marsavina

Copyright © 2015 Hu-Dan Tang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Mechanical behavior of 3D crack propagation and coalescence is investigated in rock-like material under uniaxial compression. A new transparent rock-like material is developed and a series of uniaxial compressive tests on low temperature transparent resin materials with preexisting 3D flaws are performed in laboratory, with changing values of bridge angle (inclination between the inner tips of the two preexisting flaws) of preexisting flaws in specimens. Furthermore, a theoretical peak strength prediction of 3D cracks coalescence is given. The results show that the coalescence modes of the specimens are varying according to different bridge angles. And the theoretical peak strength prediction agrees well with the experimental observation.