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| samples | apparent density (kg/m3) | compressive strength (MPa) |
|---|---|---|
| SPF-0 | 139.40 ± 1.0 | 0.44 ± 0.013 |
| SPF-0.5 | 120.40 ± 1.1 | 0.59 ± 0.018 |
| SPF-1.0 | 116.40 ± 0.7 | 0.81 ± 0.015 |
| SPF-1.5 | 112.50 ± 0.6 | 0.57 ± 0.021 |
| SPF-2.0 | 102.80 ± 1.0 | 0.43 ± 0.019 |
