Research Article
Estimating Deterioration Rate of Some Carbonate Rocks Used as Building Materials under Repeated Frost Damage Process, China
Table 2
Mean and standard deviation (SD) of unconfined compressive strength (UCS), MPa, values before and after frost cycles.
| | Cycles | Fresh | 10 | 20 | 30 | 40 | 50 | | Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD |
| | Limestone 1 | 92.0 | 11.4 | 90.8 | 10.2 | 88.6 | 12.0 | 88.0 | 11.9 | 85.8 | 13.7 | 84.0 | 15.8 | | Limestone 2 | 84.0 | 16.5 | 81.9 | 15.2 | 80.8 | 15.5 | 80.5 | 14.4 | 75.7 | 18.2 | 73.6 | 16.1 | | Limestone 3 | 52.7 | 11.8 | 48.1 | 12.6 | 45.1 | 11.5 | 43.6 | 14.0 | 40.1 | 17.2 | 35.8 | 16.0 | | Limestone 4 | 69.5 | 15.6 | 67.0 | 13.2 | 66.6 | 12.4 | 65.3 | 11.6 | 61.8 | 14.9 | 56.9 | 17.5 | | Limestone 5 | 74.0 | 7.3 | 67.5 | 11.6 | 65.0 | 12.1 | 62.8 | 15.3 | 60.0 | 14.1 | 56.7 | 12.9 | | Limestone 6 | 47.6 | 12.8 | 45.0 | 14.2 | 42.5 | 16.3 | 39.0 | 14.7 | 37.0 | 17.1 | 33.0 | 19.9 |
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