### Abstract

This paper presents a new approach, combined with the Boundary Element Method (BEM) analysis and the diametrical compression on a thin disc with a small central hole, referred to as the ring test, for determining the indirect tensile strength of anisotropic rocks. The stress distribution around the hole can be successfully obtained by the proposed single-domain BEM. The complex variable function method was used for conveniently computing the tractions and displacements of a two-dimensional anisotropic body. If we assume that the tensile strength is given by the maximum absolute value of stress in the direction perpendicular to the loaded diameter at the intersection of loaded diameter and the hole, then from the failure load recorded by laboratory testing of ring (disc), the indirect tensile strength of rocks could be obtained. A marble from Hualien (Taiwan) with clearly black-white foliation, which was assumed to be transversely isotropic, was selected to conduct both ring tests and Brazilian tests for evaluating the tensile strength. The variation of the marble tensile strength with the inclination angle of foliation and with the hole size was also investigated. In general, the tensile strength of anisotropic rocks determined by ring test is not a constant, but depends on the elastic properties of rocks, the angle between the planes of rock anisotropy and the loading direction, the diameter of the central hole, and the contact condition of loading.

Original language | English |
---|---|

Pages (from-to) | 293-321 |

Number of pages | 29 |

Journal | Rock Mechanics and Rock Engineering |

Volume | 34 |

Issue number | 4 |

DOIs | |

Publication status | Published - 2001 Dec 1 |

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### All Science Journal Classification (ASJC) codes

- Civil and Structural Engineering
- Geotechnical Engineering and Engineering Geology
- Geology

### Cite this

*Rock Mechanics and Rock Engineering*,

*34*(4), 293-321. https://doi.org/10.1007/s006030170003

}

*Rock Mechanics and Rock Engineering*, vol. 34, no. 4, pp. 293-321. https://doi.org/10.1007/s006030170003

**Measurement of indirect tensile strength of anisotropic rocks by the ring test.** / Chen, Chao-Shi; Hsu, S. C.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Measurement of indirect tensile strength of anisotropic rocks by the ring test

AU - Chen, Chao-Shi

AU - Hsu, S. C.

PY - 2001/12/1

Y1 - 2001/12/1

N2 - This paper presents a new approach, combined with the Boundary Element Method (BEM) analysis and the diametrical compression on a thin disc with a small central hole, referred to as the ring test, for determining the indirect tensile strength of anisotropic rocks. The stress distribution around the hole can be successfully obtained by the proposed single-domain BEM. The complex variable function method was used for conveniently computing the tractions and displacements of a two-dimensional anisotropic body. If we assume that the tensile strength is given by the maximum absolute value of stress in the direction perpendicular to the loaded diameter at the intersection of loaded diameter and the hole, then from the failure load recorded by laboratory testing of ring (disc), the indirect tensile strength of rocks could be obtained. A marble from Hualien (Taiwan) with clearly black-white foliation, which was assumed to be transversely isotropic, was selected to conduct both ring tests and Brazilian tests for evaluating the tensile strength. The variation of the marble tensile strength with the inclination angle of foliation and with the hole size was also investigated. In general, the tensile strength of anisotropic rocks determined by ring test is not a constant, but depends on the elastic properties of rocks, the angle between the planes of rock anisotropy and the loading direction, the diameter of the central hole, and the contact condition of loading.

AB - This paper presents a new approach, combined with the Boundary Element Method (BEM) analysis and the diametrical compression on a thin disc with a small central hole, referred to as the ring test, for determining the indirect tensile strength of anisotropic rocks. The stress distribution around the hole can be successfully obtained by the proposed single-domain BEM. The complex variable function method was used for conveniently computing the tractions and displacements of a two-dimensional anisotropic body. If we assume that the tensile strength is given by the maximum absolute value of stress in the direction perpendicular to the loaded diameter at the intersection of loaded diameter and the hole, then from the failure load recorded by laboratory testing of ring (disc), the indirect tensile strength of rocks could be obtained. A marble from Hualien (Taiwan) with clearly black-white foliation, which was assumed to be transversely isotropic, was selected to conduct both ring tests and Brazilian tests for evaluating the tensile strength. The variation of the marble tensile strength with the inclination angle of foliation and with the hole size was also investigated. In general, the tensile strength of anisotropic rocks determined by ring test is not a constant, but depends on the elastic properties of rocks, the angle between the planes of rock anisotropy and the loading direction, the diameter of the central hole, and the contact condition of loading.

UR - http://www.scopus.com/inward/record.url?scp=0035529030&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035529030&partnerID=8YFLogxK

U2 - 10.1007/s006030170003

DO - 10.1007/s006030170003

M3 - Article

AN - SCOPUS:0035529030

VL - 34

SP - 293

EP - 321

JO - Rock Mechanics and Rock Engineering

JF - Rock Mechanics and Rock Engineering

SN - 0723-2632

IS - 4

ER -