Table 3.
Porosity values (before and after the degradation test) and compression test results.
| Group of Samples | Initial Porosity (%) | Final Porosity (%) | Elastic Modulus (MPa) | Compressive Yield Strength (MPa) | Compression Strength (MPa) | Strain at Maximum Strength |
|---|---|---|---|---|---|---|
| RC (compression test) | 83.6 ± 7.9 | 7.2 ± 1.0 | - | - | ||
| PLA | 55.5 ± 2.9 | 58.0 ± 3.0 | 81.0 ± 10.7 | 7.0 ± 1.5 | 9.7 ± 2.0 | 0.24 ± 0.07 |
| PLASMA 1 min | 56.0 ± 2.5 | 59.0 ± 2.1 | 72.7 ± 4.9 | 6.5 ± 1.7 | 9.9 ± 2.9 | 0.27 ± 0.04 |
| PLASMA 10 min | 56.1 ± 1.6 | 58.8 ± 1.5 | 73.7 ± 13.3 | 6.6 ± 1.4 | 9.2 ± 1.9 | 0.24 ± 0.03 |
| NaOH 0.2 N | 55.9 ± 1.8 | 60.1 ± 1.7 * | 69.2 ± 13.5 | 6.9 ± 1.5 | 8.9 ± 0.9 | 0.23 ± 0.04 |
| NaOH 1 N | 58.8 ± 0.9 | 61.7 ± 1.6 * | 67.7 ± 8.4 | 6.0 ± 0.8 | 8.4 ± 1.1 | 0.25 ± 0.01 |
| NaOH 0.2 N + citric acid | 56.4 ± 2.4 | 60.8 ± 2.3 | 63.2 ± 7.5 | 5.2 ± 0.8 | 8.2 ± 1.8 | 0.26 ± 0.02 |
* p < 0.05 compared with initial porosity of this group.