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Hardness of cement specimens relative to the degree of saline contamination.
| Contamination Level | Mean Hardness | SD (°Sh D) | CV |
|---|---|---|---|
| (°Sh D) | |||
| Saline solution | |||
| 0.0% | 80.57 | 2.40 | 3.0% |
| 1.1% | 79.37 | 0.75 | 0.9% |
| 2.2% | 78.53 | 1.92 | 2.4% |
| 4.4% | 75.80 | 1.80 | 2.4% |
| 6.6% | 74.95 | 2.49 | 3.3% |
| 8.7% | 71.07 | 2.05 | 2.9% |
| 10.9% | 69.97 | 2.68 | 3.8% |
