Table 12.
MCE mix stiffness variation via water and brine soaking.
| Specimen Index | Stiffness | Stiffness Change | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Dry Specimen | Water Soaked | Brine Soaked | Water Soaked | Brine Soaked | |||||
| Initial State | 2 Days | 21 Days | 2 Days | 21 Days | 2 Days | 21 Days | 2 Days | 21 Days | |
| (MPa) | (MPa) | (MPa) | (MPa) | (MPa) | (MPa) | (MPa) | (MPa) | (MPa) | |
| 1 | 4301 | 4150 | 3899 | 151 | 402 | ||||
| 2 | 4018 | 3869 | 3587 | 149 | 431 | ||||
| 3 | 4258 | 4132 | 3854 | 126 | 404 | ||||
| 4 | 4328 | 4171 | 3836 | 157 | 492 | ||||
| 5 | 4125 | 3774 | 2597 | 351 | 1529 | ||||
| 6 | 3986 | 3620 | 2509 | 366 | 1477 | ||||
| 7 | 4424 | 3901 | 2594 | 523 | 1831 | ||||
| 8 | 3899 | 3348 | 2171 | 551 | 1729 | ||||
| 9 | 4222 | 3814 | 2694 | 408 | 1528 | ||||
| Average | 4173.4 | 4080.5 | 3691.4 | 3794.0 | 2512.7 | 145.8 | 432.3 | 439.8 | 1618.5 |
| Standard deviation | 166.5 | 122.9 | 194.3 | 121.7 | 180.9 | 11.8 | 36.3 | 82.0 | 136.6 |
| The coefficient of variation (%) | 3.99% | 3.01% | 5.26% | 3.21% | 7.20% | 8.08% | 8.41% | 18.65% | 8.44% |