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| Proposed Formula for Tensile Strength of Ring Brazil Test |
| Received:October 17, 2018 Revised:February 25, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2019.02.009 |
| KeyWord:ring specimen splitting test tensile strength formula |
| Author | Institution |
| WANG Jie |
School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang , China |
| TAO Jun-lin |
School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang , China |
| GUO Hui |
School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang , China |
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| Abstract: |
| Objective To propose a formula for the tensile strength of the ring Brazil test and eliminate the problem that the calculated values obtained by the Hobbs formula are generally larger. Methods The stress solution of the Brazilian test ring was analyzed and the sandstone experiment data for verification was cited. Results The proposed formula of the tensile strength of the ring Brazil test was obtained; the tensile strength obtained through the Hobbs formula was six times more than that of the Brazilian disc test; and the tensile strength obtained through the proposed formula was very close to the Brazilian disc test with an error of less than 1%. Conclusion The proposed formula can be used to calculate the tensile strength of brittle materials when the inner and outer diameter ratio ρ of the ring specimen is in the range of 0.05 to 0.15. |
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