Research Article
The Friction Angle of the Leiyang Marble Surface after Exposure to High Temperature
Table 1
The initial sliding angles of marble surfaces after exposure to different temperatures.
| No. | Experimental data under each temperature | Normalized by the average value at 20°C | ST (L/D = 2) | ST (L/D = 4) | DT | ST (L/D = 2) | ST (L/D = 4) | DT | 20 | 200 | 400 | 600 | 20 | 200 | 400 | 600 | 20 | 200 | 400 | 600 | 20 | 200 | 400 | 600 | 20 | 200 | 400 | 600 | 20 | 200 | 400 | 600 |
| 1 | 34 | 36 | 31 | 30 | 34 | 33 | 31 | 30 | 27 | 26 | 25 | 23 | 1.00 | 1.06 | 0.91 | 0.88 | 1.00 | 0.97 | 0.91 | 0.88 | 1.0 | 0.96 | 0.93 | 0.85 | 2 | 34 | 32 | 30 | 29 | 35 | 34 | 35 | 33 | 27 | 26 | 25 | 24 | 1.00 | 0.94 | 0.88 | 0.85 | 1.03 | 1.00 | 1.03 | 0.97 | 1.0 | 0.96 | 0.93 | 0.89 | 3 | 33 | 32 | 34 | 26 | 34 | 30 | 35 | 30 | 25 | 27 | 26 | 25 | 0.97 | 0.94 | 1.00 | 0.76 | 1.00 | 0.88 | 1.03 | 0.88 | 1.0 | 1.08 | 1.04 | 1.00 | 4 | 35 | 34 | 35 | 25 | 34 | 32 | 36 | 28 | 26 | 25 | 23 | 23 | 1.03 | 1.00 | 1.03 | 0.74 | 1.00 | 0.94 | 1.06 | 0.82 | 1.0 | 0.96 | 0.88 | 0.88 | 5 | 34 | 36 | 32 | 28 | 34 | 33 | 38 | 27 | 26 | 25 | 24 | 23 | 1.00 | 1.06 | 0.94 | 0.82 | 1.00 | 0.97 | 1.12 | 0.79 | 1.0 | 0.96 | 0.92 | 0.88 | 6 | 34 | 37 | 34 | 28 | 34 | 32 | 30 | 29 | 28 | 26 | 21 | 21 | 1.00 | 1.09 | 1.00 | 0.82 | 1.00 | 0.94 | 0.88 | 0.85 | 1.0 | 0.93 | 0.75 | 0.75 | 7 | 34 | 32 | 35 | 26 | 33 | 31 | 31 | 30 | 25 | 24 | 27 | 27 | 1.00 | 0.94 | 1.03 | 0.76 | 0.97 | 0.91 | 0.91 | 0.88 | 1.0 | 0.96 | 1.08 | 1.08 | 8 | 33 | 30 | 32 | 27 | 34 | 32 | 29 | 30 | 25 | 28 | 22 | 20 | 0.97 | 0.88 | 0.94 | 0.79 | 1.00 | 0.94 | 0.85 | 0.88 | 1.0 | 1.12 | 0.88 | 0.80 | 9 | 33 | 33 | 30 | 29 | 34 | 33 | 35 | 31 | 23 | 24 | 22 | 22 | 0.97 | 0.97 | 0.88 | 0.85 | 1.00 | 0.97 | 1.03 | 0.91 | 1.0 | 1.04 | 0.96 | 0.96 | 10 | 33 | 34 | 31 | 30 | 34 | 34 | 36 | 31 | 24 | 25 | 23 | 19 | 0.97 | 1.00 | 0.91 | 0.88 | 1.00 | 1.00 | 1.06 | 0.91 | 1.0 | 1.04 | 0.96 | 0.79 | 11 | 35 | 34 | 29 | 24 | 34 | 36 | 32 | 33 | 25 | 24 | 23 | 23 | 1.03 | 1.00 | 0.85 | 0.71 | 1.00 | 1.06 | 0.94 | 0.97 | 1.0 | 0.96 | 0.92 | 0.92 | 12 | 34 | 36 | 34 | 25 | 34 | 32 | 31 | 26 | 25 | 26 | 21 | 23 | 1.00 | 1.06 | 1.00 | 0.74 | 1.00 | 0.94 | 0.91 | 0.76 | 1.0 | 1.04 | 0.84 | 0.92 | 13 | 32 | 32 | 31 | 26 | 35 | 30 | 30 | 28 | 25 | 27 | 21 | 22 | 0.94 | 0.94 | 0.91 | 0.76 | 1.03 | 0.88 | 0.88 | 0.82 | 1.0 | 1.08 | 0.84 | 0.88 | 14 | 34 | 32 | 29 | 25 | 35 | 31 | 32 | 26 | 26 | 27 | 24 | 21 | 1.00 | 0.94 | 0.85 | 0.74 | 1.03 | 0.91 | 0.94 | 0.76 | 1.0 | 1.04 | 0.92 | 0.81 | 15 | 35 | 31 | 30 | 25 | 33 | 36 | 31 | 33 | 25 | 26 | 24 | 20 | 1.03 | 0.91 | 0.88 | 0.74 | 0.97 | 1.06 | 0.91 | 0.97 | 1.0 | 1.04 | 0.96 | 0.80 | 16 | 34 | 31 | 31 | 24 | 34 | 35 | 29 | 31 | 25 | 26 | 25 | 20 | 1.00 | 0.91 | 0.91 | 0.71 | 1.00 | 1.03 | 0.85 | 0.91 | 1.0 | 1.04 | 1.00 | 0.80 | 17 | 35 | 30 | 33 | 23 | 35 | 35 | 34 | 34 | 26 | 25 | 23 | 19 | 1.03 | 0.88 | 0.97 | 0.68 | 1.03 | 1.03 | 1.00 | 1.00 | 1.0 | 0.96 | 0.88 | 0.73 | 18 | 35 | 35 | 32 | 28 | 35 | 33 | 32 | 29 | 26 | 26 | 21 | 19 | 1.03 | 1.03 | 0.94 | 0.82 | 1.03 | 0.97 | 0.94 | 0.85 | 1.0 | 1.00 | 0.81 | 0.73 | 19 | 33 | 35 | 32 | 29 | 34 | 32 | 33 | 29 | 26 | 26 | 21 | 22 | 0.97 | 1.03 | 0.94 | 0.85 | 1.00 | 0.94 | 0.97 | 0.85 | 1.0 | 1.00 | 0.81 | 0.85 | 20 | 35 | 32 | 32 | 26 | 34 | 32 | 33 | 28 | 25 | 25 | 23 | 23 | 1.03 | 0.94 | 0.94 | 0.76 | 1.00 | 0.94 | 0.97 | 0.82 | 1.0 | 1.00 | 0.92 | 0.92 | 21 | 34 | 33 | 31 | 26 | 33 | 33 | 31 | 30 | 24 | 25 | 23 | 20 | 1.00 | 0.97 | 0.91 | 0.76 | 0.97 | 0.97 | 0.91 | 0.88 | 1.0 | 1.04 | 0.96 | 0.83 | 22 | 34 | 34 | 30 | 27 | 34 | 31 | 31 | 31 | 23 | 23 | 20 | 24 | 1.00 | 1.00 | 0.88 | 0.79 | 1.00 | 0.91 | 0.91 | 0.91 | 1.0 | 1.00 | 0.87 | 1.04 | 23 | 32 | 34 | 34 | 25 | 33 | 34 | 32 | 33 | 23 | 28 | 23 | 24 | 0.94 | 1.00 | 1.00 | 0.74 | 0.97 | 1.00 | 0.94 | 0.97 | 1.0 | 1.22 | 1.00 | 1.04 | 24 | 34 | 32 | 31 | 26 | 33 | 37 | 30 | 30 | 23 | 21 | 21 | 23 | 1.00 | 0.94 | 0.91 | 0.76 | 0.97 | 1.09 | 0.88 | 0.88 | 1.0 | 0.91 | 0.91 | 1.00 | 25 | — | 33 | 28 | 29 | — | 30 | 30 | 31 | 23 | 26 | 22 | 22 | — | 0.97 | 0.82 | 0.85 | — | 0.88 | 0.88 | 0.91 | 1.0 | 1.13 | 0.96 | 0.96 | 26 | — | 32 | 30 | 25 | — | 32 | 29 | 31 | 22 | 25 | 22 | 21 | — | 0.94 | 0.88 | 0.74 | — | 0.94 | 0.85 | 0.91 | 1.0 | 1.14 | 1.00 | 0.95 | 27 | — | 35 | 34 | 26 | — | 31 | 30 | 30 | 24 | 24 | 21 | 20 | — | 1.03 | 1.00 | 0.76 | — | 0.91 | 0.88 | 0.88 | 1.0 | 1.00 | 0.88 | 0.83 | 28 | — | 36 | 32 | 28 | — | 33 | 31 | 30 | 24 | 22 | 25 | 20 | — | 1.06 | 0.94 | 0.82 | — | 0.97 | 0.91 | 0.88 | 1.0 | 0.92 | 1.04 | 0.83 | 29 | — | 34 | 31 | 28 | — | 33 | 34 | 29 | 23 | 21 | 23 | 21 | — | 1.00 | 0.91 | 0.82 | — | 0.97 | 1.00 | 0.85 | 1.0 | 0.91 | 1.00 | 0.91 | 30 | — | 35 | 32 | 27 | — | 32 | 30 | 30 | 23 | 26 | 22 | 23 | — | 1.03 | 0.94 | 0.79 | — | 0.94 | 0.88 | 0.88 | 1.0 | 1.13 | 0.96 | 1.00 | 31 | — | — | — | — | — | — | — | — | 24 | 24 | 21 | 21 | — | — | — | — | — | — | — | — | 1.0 | 1.00 | 0.88 | 0.88 | 32 | — | — | — | — | — | — | — | — | 23 | 25 | 24 | 21 | — | — | — | — | — | — | — | — | 1.0 | 1.09 | 1.04 | 0.91 | 33 | — | — | — | — | — | — | — | — | 23 | 23 | 23 | 22 | — | — | — | — | — | — | — | — | 1.0 | 1.00 | 1.00 | 0.96 | 34 | — | — | — | — | — | — | — | — | 23 | 24 | 22 | 22 | — | — | — | — | — | — | — | — | 1.0 | 1.04 | 0.96 | 0.96 | 35 | — | — | — | — | — | — | — | — | 24 | 23 | 20 | 20 | — | — | — | — | — | — | — | — | 1.0 | 0.96 | 0.83 | 0.83 | 36 | — | — | — | — | — | — | — | — | 23 | 23 | 21 | 20 | — | — | — | — | — | — | — | — | 1.0 | 1.00 | 0.91 | 0.87 |
| Max | 35 | 37 | 35 | 33 | 35 | 37 | 38 | 34 | 28 | 28 | 27 | 27 | 1.03 | 1.09 | 1.03 | 0.97 | 1.03 | 1.09 | 1.12 | 1.00 | 1.0 | 1.00 | 0.96 | 0.96 | Min | 32 | 30 | 28 | 23 | 32 | 30 | 29 | 26 | 22 | 21 | 20 | 19 | 0.94 | 0.88 | 0.82 | 0.68 | 0.94 | 0.88 | 0.85 | 0.76 | 1.0 | 0.95 | 0.91 | 0.86 | Ave | 33.9 | 33.4 | 31.7 | 26.9 | 34 | 32.7 | 32 | 30 | 24.5 | 24.9 | 22.7 | 21.8 | 1.00 | 0.98 | 0.93 | 0.79 | 1.00 | 0.96 | 0.94 | 0.88 | 1.0 | 1.02 | 0.93 | 0.89 | SD | 0.9 | 1.89 | 1.83 | 2.16 | 0.66 | 1.80 | 2.37 | 1.99 | 1.44 | 1.71 | 1.70 | 1.83 | 0.03 | 0.06 | 0.05 | 0.06 | 0.02 | 0.05 | 0.07 | 0.06 | 1.0 | 1.19 | 1.18 | 1.27 |
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Max: maximum; Min: minimum; Ave: average; SD: standard deviation.
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