ARTICLE
Influences of the diameter and position of the inner hole on the strength and failure of disc specimens of sandstone determined using the Brazilian split test
Tantan Zhu 1
,  
Da Huang 2  
 
 
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1
State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, China
2
School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin, China
Publish date: 2019-01-20
Submission date: 2017-11-04
Acceptance date: 2018-08-01
 
Journal of Theoretical and Applied Mechanics 2019;57(1):127–140
KEYWORDS
ABSTRACT
The Brazilian split test on a centrally holed disc (referred to as a ring-disc specimen) is an important indirect method for determining the tensile strength of rock. This paper studies the effect of the diameter d of the center hole and its position, defined by the eccentricity b and the inclination angle of the eccentric hole, on the peak load, failure pattern and horizon- tal stress of the disc specimen via laboratory experiments and numerical modeling using the finite element method (FEM). Static Brazilian split tests are conducted on an intact disc and three types of holed discs: C-specimens containing a central hole with different diame- ters, EH-specimens with a horizontally eccentric hole and ER-specimens with a rotationally eccentric hole.
 
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