An Improved Algorithm in Porosity Characteristics Analysis for Rock and Soil Aggregate
Joint Authors
Wu, Yanfang
Li, Xiao
Wang, Yu
Zhang, Bo
Source
Discrete Dynamics in Nature and Society
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-08-27
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
The rock and soil aggregate (RSA) is a special inhomogeneous multiphase geomaterial.
It is crucial for stability of engineering by study of RSA mesodamage characteristic.
This paper aims at investigating the porosity evolution characteristics of RSA by X-ray computed tomography (CT) under uniaxial compressive loading.
X-ray tomography images were used to extract defects of RSA specimen under different compressive loading.
In this paper, we proposed an improved Ostu method to calibrate the beam hardening phenomenon which is caused by X-ray.
Also, based on this Ostu method, the outline of rock blocks in RSA is extracted, and the double gray level threshold of soil and rock block is obtained to ensure the reliability of the porosity calculation.
We can conclude that the main reason of RSA cracking is the elasticity mismatch between rock blocks and soil, and the porosity evolution of RSA can be divided into four typical stages.
These results may be useful to reveal the mesoscopic cracking mechanism and establish mesodamage evolution equation and constitutive relation for RSA.
American Psychological Association (APA)
Wu, Yanfang& Li, Xiao& Wang, Yu& Zhang, Bo. 2014. An Improved Algorithm in Porosity Characteristics Analysis for Rock and Soil Aggregate. Discrete Dynamics in Nature and Society،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1017962
Modern Language Association (MLA)
Wu, Yanfang…[et al.]. An Improved Algorithm in Porosity Characteristics Analysis for Rock and Soil Aggregate. Discrete Dynamics in Nature and Society No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-1017962
American Medical Association (AMA)
Wu, Yanfang& Li, Xiao& Wang, Yu& Zhang, Bo. An Improved Algorithm in Porosity Characteristics Analysis for Rock and Soil Aggregate. Discrete Dynamics in Nature and Society. 2014. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1017962
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1017962