Table 4 Soil pore classification and its changes
From: Effect of polymer water retaining agent on physical properties of silty clay
Pore type | Aeration pore | Capillary pore | Inactive pore | Total porosity (%) |
|---|---|---|---|---|
Equivalent pore size (mm) | > 0.06 | 0.06–0.002 | < 0.002 | |
Suction pressure(kPa) | 4.8 | 4.8–144 | 144 | |
Porosity/proportion (%) | ||||
1 | 3.16 ± 0.26/7.86 ± 0.65% | 22.45 ± 0.3/55.81 ± 0.75% | 14.62 ± 0.19/36.33 ± 0.47% | 40.23 ± 0.25 |
2 | 12.03 ± 0.3/17.16 ± 0.43% | 19.42 ± 0.14/27.70 ± 0.2% | 38.66 ± 0.27/55.14 ± 0.39% | 70.11 ± 0.24 |
3 | 16.18 ± 0.24/21.55 ± 0.32% | 16.45 ± 0.22/21.90 ± 0.29% | 42.48 ± 0.21/56.55 ± 0.28% | 75.11 ± 0.22 |
4 | 17.35 ± 0.34/21.62 ± 0.42% | 18.19 ± 0.27/22.67 ± 0.34% | 44.7 ± 0.34/55.71 ± 0.42% | 80.24 ± 0.32 |