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Rock Mechanics and Rock Engineering
Published in: Rock Mechanics and Rock Engineering 9/2019

04-03-2019 | Original Paper

Cracking Evolution and Failure Characteristics of Longmaxi Shale Under Uniaxial Compression Using Real-Time Computed Tomography Scanning

Authors: Yongting Duan, Xiao Li, Bo Zheng, Jianming He, Jin Hao

Published in: Rock Mechanics and Rock Engineering | Issue 9/2019

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Abstract

To determine the cracking and failure characteristics of Longmaxi shale in deformation and failure under loading, cylindrical specimens were prepared to conduct a series of uniaxial compression tests. Real-time computed tomography (CT) at different stress levels were used to obtain reconstructed stereograms, and horizontal CT images and vertical slices were obtained for analysis. Based on the CT images and slices, the cracking evolution of Longmaxi shale in the horizontal and vertical direction was determined qualitatively, the quantitative distributions of crack area during the loading were revealed and the variation in crack volume at different stress levels was first obtained. Based on the grey histogram of the reconstructed three-dimensional volume, the initial mineral distribution, internal pore evolution and final crack morphologies and volumes were established and their inter-relationship was discussed. These qualitative and quantitative results are necessary to characterize and understand the cracking evolution and failure characteristics of the Longmaxi shale.
previous article Probabilistic Characterization of Rock Mass from Limited Laboratory Tests and Field Data: Associated Reliability Analysis and Its Interpretation
next article The Microwave-Induced Fracturing of Hard Rock

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Metadata
Title
Cracking Evolution and Failure Characteristics of Longmaxi Shale Under Uniaxial Compression Using Real-Time Computed Tomography Scanning
Authors
Yongting Duan
Xiao Li
Bo Zheng
Jianming He
Jin Hao
Publication date
04-03-2019
Publisher
Springer Vienna
Published in
Rock Mechanics and Rock Engineering / Issue 9/2019
Print ISSN: 0723-2632
Electronic ISSN: 1434-453X
DOI
https://doi.org/10.1007/s00603-019-01765-0

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