Research Article
Comparative Study on the Test Method for Tensile Elastic Modulus of Rock Materials
Table 7
Test results of Brazilian disc test for marble, granite, and sandstone.
| Rock materials | SN | Es (GPa) | | D (mm) | L (mm) | A | Et (GPa) | σt (MPa) |
| Marble | MP1 | 3.0 | 0.27 | 49.82 | 5 | 1.74 | 5.1 | 1.88 | MP2 | 3.6 | 49.8 | 6.2 | 2.25 | MP3 | 4.6 | 49.87 | 7.9 | 2.13 | MP4 | 3.5 | 49.82 | 6.0 | 1.94 | MP5 | 3.3 | 49.85 | 5.7 | 2.04 | Mean | 3.6 | | 6.2 | 2.05 |
| Granite | GP1 | 9.8 | 0.19 | 49.73 | 5 | 1.49 | 14.7 | 4.46 | GP2 | 8.3 | 49.72 | 12.4 | 4.07 | GP3 | 8.9 | 49.76 | 13.3 | 4.14 | GP4 | 9.1 | 49.86 | 13.6 | 4.92 | GP5 | — | — | — | — | Mean | 9.0 | | 13.5 | 4.40 |
| Sandstone | SP1 | 1.7 | 0.15 | 49.75 | 5 | 1.38 | 2.4 | 1.41 | SP2 | — | 49.74 | — | 1.02 | SP3 | 1.8 | 49.8 | 2.5 | 1.02 | SP4 | 1.9 | 49.76 | 2.6 | 1.20 | SP5 | — | 49.71 | — | 0.92 | Mean | 1.4 | | 2.5 | 1.11 |
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Note. The test on GP5, SP2, and SP5 is not successful.
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