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Compressive strength of all mixes at different curing times.
| Sand Type | Molarity of NaOH (mol/L) | Slag Replacement Rate (%) | Compressive Strength (MPa) | ||||
|---|---|---|---|---|---|---|---|
| 1 Day | 3 Days | 7 Days | 14 Days | 28 Days | |||
| Sea sand | 10 | 20 | - | - | - | - | 23.73 |
| 40 | - | - | - | - | 51.48 | ||
| 60 | 34.4 | 50.0 | 63.3 | 59.3 | 73.1 | ||
| 8 | 60 | - | - | - | - | 51.0 | |
| 12 | 60 | - | - | - | - | 65.5 | |
| River sand | 10 | 20 | - | - | - | - | 27.0 |
| 40 | - | - | - | - | 37.9 | ||
| 60 | 38.1 | 48.7 | 58.7 | 68.9 | 68.3 | ||
| 8 | 60 | - | - | - | - | 62.6 | |
| 12 | 60 | - | - | - | - | 60.4 | |
