Research Article
Effect of Bedding Angle and Confining Pressure on the Brittleness of Geomaterials: A Case Study on Slate
Table 1
The calculated slate brittleness indices.
| Numbers | Energy accumulated at the axial prepeak stage (106 J/m3) | Energy accumulated at the circumferential prepeak stage (106 J/m3) | Work done by press tester at the axial postpeak stage (106 J/m3) | Work done by press tester at the circumferential postpeak stage (106 J/m3) | Residual strain energy (106 J/m3) | Brittleness |
| 0-1# | 0.2927 | 0.0000 | 0.0000 | 0.0000 | 0.0000 | 5.6147 | 0-2# | 0.2095 | 0.0000 | 0.1300 | 0.0000 | 0.0086 | 2.5450 | 0-3# | 0.3059 | 0.0000 | 0.5504 | 0.0000 | 0.0000 | 1.5558 | 15-11# | 0.5099 | 0.0000 | 0.2632 | 0.0000 | 0.2697 | 1.9124 | 15-12# | 0.2853 | 0.0000 | 0.0181 | 0.0000 | 0.0000 | 16.7754 | 30-11# | 0.2431 | 0.0000 | 0.0242 | 0.0000 | 0.0000 | 11.0322 | 30-13# | 0.2596 | 0.0000 | 0.1332 | 0.0000 | 0.0000 | 2.9487 | 45-6# | 0.2298 | 0.0000 | 0.1349 | 0.0000 | 0.0000 | 2.7034 | 45-7# | 0.2008 | 0.0000 | 0.0405 | 0.0000 | 0.0142 | 5.6051 | 45-8# | 0.2221 | 0.0000 | 0.0204 | 0.0000 | 0.0002 | 11.8561 | 60-1# | 0.1822 | 0.0000 | 0.0310 | 0.0000 | 0.0000 | 6.8827 | 60-2# | 0.2561 | 0.0000 | 0.0682 | 0.0000 | 0.0202 | 4.4588 | 60-3# | 0.2573 | 0.0000 | 0.1847 | 0.0000 | 0.0000 | 2.3930 | 75-3# | 0.1502 | 0.0000 | 0.0786 | 0.0000 | 0.0189 | 2.6709 | 90-1# | 0.4136 | 0.0000 | 0.0140 | 0.0000 | 0.3559 | 5.1345 | 90-3# | 0.3040 | 0.0000 | 0.0432 | 0.0000 | 0.0584 | 6.6838 | 0-8# | 0.5707 | 0.0059 | 0.7587 | 0.0881 | 0.0036 | 1.6768 | 15-1# | 0.5338 | 0.0045 | 0.4728 | 0.0269 | 0.1616 | 1.7538 | 15-2# | 0.6155 | 0.0049 | 0.1168 | 0.0253 | 0.0462 | 5.0407 | 30-1# | 0.4219 | 0.0034 | 0.1319 | 0.0081 | 0.1608 | 2.8893 | 30-2# | 0.5412 | 0.0035 | 0.0154 | 0.0077 | 0.2033 | 15.7825 | 45-1# | 0.5012 | 0.0039 | 0.1267 | 0.0144 | 0.1206 | 3.7246 | 45-2# | 0.7414 | 0.0053 | 0.0181 | 0.0243 | 0.1103 | 15.9934 | 45-12# | 0.4410 | 0.0052 | 0.1051 | 0.0127 | 0.1050 | 3.8964 | 60-4# | 0.4670 | 0.0045 | 0.0741 | 0.0120 | 0.0609 | 5.7707 | 75-4# | 0.2974 | 0.0055 | 0.0596 | 0.0094 | 0.0938 | 4.0332 | 75-5# | 0.4557 | 0.0063 | 0.2694 | 0.0216 | 0.1993 | 1.9027 | 90-5# | 0.7290 | 0.0079 | 0.0475 | 0.0253 | 0.1789 | 8.6697 | 90-15# | 0.5098 | 0.0045 | 0.3157 | 0.0178 | 0.1813 | 1.9987 | 0-5# | 0.7727 | 0.0152 | 0.2721 | 0.0432 | 0.2222 | 2.7943 | 0-9# | 0.6931 | 0.0143 | 0.4624 | 0.0395 | 0.2382 | 1.9349 | 15-3# | 1.1013 | 0.0135 | 0.3235 | 0.0387 | 0.2383 | 3.4198 | 15-4# | 1.0216 | 0.0128 | 0.0951 | 0.0558 | 0.1516 | 6.8464 | 30-3# | 0.9627 | 0.0132 | 0.0675 | 0.0650 | 0.0266 | 8.1641 | 30-4# | 0.3269 | 0.0187 | 0.1497 | 0.0520 | 0.0748 | 2.3430 | 30-5# | 0.6205 | 0.0078 | 0.3671 | 0.0529 | 0.1834 | 2.0591 | 45-3# | 0.6600 | 0.0076 | 0.0685 | 0.0291 | 0.1357 | 6.4496 | 45-4# | 0.5255 | 0.0095 | 0.1420 | 0.0398 | 0.1097 | 3.3396 | 45-13# | 0.5825 | 0.0142 | 0.0508 | 0.0584 | 0.0100 | 6.3732 | 60-6# | 0.8563 | 0.0114 | 0.0507 | 0.0277 | 0.3548 | 7.5410 | 60-7# | 0.8656 | 0.0111 | 0.0224 | 0.0148 | 0.4713 | 11.8739 | 75-6# | 0.3991 | 0.0070 | 0.5300 | 0.0044 | 0.3469 | 1.1107 | 75-7# | 0.5409 | 0.0098 | 0.0965 | 0.0926 | 0.0792 | 3.4931 | 90-6# | 0.9810 | 0.0145 | 0.1263 | 0.0325 | 0.2387 | 5.7626 | 90-7# | 0.6370 | 0.0108 | 0.2139 | 0.0159 | 0.2754 | 2.6204 | 0-10# | 0.8492 | 0.0262 | 0.2650 | 0.6138 | 0.0521 | 1.9369 | 15-5# | 1.3897 | 0.0334 | 0.0554 | 0.0544 | 0.5681 | 8.7839 | 15-6# | 1.1695 | 0.0256 | 0.2547 | 0.1320 | 0.2562 | 3.4277 | 15-9# | 1.8193 | 0.0364 | 0.7406 | 0.0674 | 0.8540 | 2.2397 | 30-6# | 1.1028 | 0.0245 | 0.2972 | 0.0327 | 0.5105 | 2.8697 | 30-7# | 1.0334 | 0.0264 | 0.1070 | 0.0432 | 0.5571 | 4.3473 | 45-5# | 0.4858 | 0.0328 | 0.0834 | 0.1437 | 0.0622 | 3.0100 | 45-14# | 1.0787 | 0.0371 | 0.0695 | 0.0383 | 0.4270 | 7.3877 | 45-16# | 1.1642 | 0.0427 | 0.1206 | 0.0202 | 0.5456 | 5.6984 | 60-8# | 1.1881 | 0.0286 | 0.0645 | 0.0327 | 0.7086 | 6.2265 | 60-10# | 1.0959 | 0.0206 | 0.3090 | 0.0272 | 0.9932 | 1.3665 | 75-9# | 0.9658 | 0.0254 | 0.1147 | 0.3107 | 0.0711 | 3.1626 | 90-8# | 1.4660 | 0.0304 | 0.2457 | 0.0320 | 0.9974 | 2.7966 | 90-9# | 1.6293 | 0.0809 | 0.4541 | 0.0447 | 1.0685 | 2.2866 | 90-14# | 1.2778 | 0.0278 | 0.0828 | 0.0609 | 0.6480 | 5.5740 | 0-7# | 1.5891 | 0.0568 | 0.8313 | 0.4532 | 0.1189 | 2.1887 | 0-11# | 1.6423 | 0.0675 | 0.1200 | 0.0603 | 0.6735 | 6.7483 | 15-7# | 1.8402 | 0.0450 | 1.2895 | 0.3018 | 0.3981 | 1.9346 | 15-8# | 1.9970 | 0.0545 | 0.9092 | 0.1012 | 0.9924 | 2.0482 | 30-8# | 1.6819 | 0.0429 | 0.0757 | 0.0432 | 0.9060 | 7.8858 | 30-9# | 1.1487 | 0.1494 | 0.2745 | 0.2496 | 0.1915 | 3.1117 | 30-10# | 1.7628 | 0.0473 | 0.5619 | 0.4387 | 0.1295 | 2.6797 | 45-10# | 1.7374 | 0.0552 | 0.1132 | 0.0039 | 0.9310 | 8.3590 | 45-11# | 1.5292 | 0.0542 | 0.0824 | 0.0047 | 1.0035 | 8.1359 | 60-11# | 1.9065 | 0.0482 | 0.1345 | 0.0044 | 1.2486 | 6.3178 | 60-12# | 1.4069 | 0.0400 | 0.2523 | 0.2120 | 0.1404 | 3.8142 | 75-10# | 1.5023 | 0.0336 | 0.5206 | 0.5644 | 0.1481 | 2.2789 | 75-11# | 1.3861 | 0.0341 | 0.3446 | 0.0175 | 1.2754 | 1.3998 | 90-10# | 2.0020 | 0.0178 | 0.0707 | 0.0764 | 1.0466 | 7.6166 |
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