Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Estimation of the amount of the frost heave Wp[mm] for some values of content on the clay and silt fractions
| fs+fc [%] | fc[%] | |||||
|---|---|---|---|---|---|---|
| 0 | 4 | 8 | 12 | 16 | 20 | |
| 25 | 0.96 | 1.41 | 2.08 | 3.07 | 4.53 | 6.68 |
| 30 | 1.38 | 2.04 | 3.01 | 4.43 | 6.54 | 9.65 |
| 35 | 2.00 | 2.94 | 4.34 | 6.41 | 9.46 | 13.95 |
| 40 | 2.88 | 4.26 | 6.28 | 9.26 | 13.67 | 20.17 |
| 45 | 4.17 | 6.15 | 9.08 | 13.39 | 19.76 | 29.15 |
| 50 | 6.02 | 8.89 | 13.12 | 19.35 | 28.56 | 42.14 |
| 55 | 8.71 | 12.85 | 18.96 | 27.97 | 41.28 | 60.90 |
| 60 | 12.59 | 18.57 | 27.40 | 40.43 | 59.66 | 88.03 |
| 65 | 18.19 | 26.84 | 39.61 | 58.44 | 86.23 | 127.24 |
| 70 | 26.30 | 38.80 | 57.25 | 84.47 | 124.64 | 183.90 |
Parameters of soils
| Type of material | Dry density ρd | Particle density ρs | Porosity n | Void ratio e | Saturation ratio Sr |
|---|---|---|---|---|---|
| [g·cm−3] | [g·cm−3] | [-] | [-] | [-] | |
| Soil 1 (clsaSi) | 1.800 | 2.668 | 0.325 | 0.482 | 0.454 |
| Soil 2 (saCl) | 1.809 | 2.679 | 0.325 | 0.481 | 0.501 |
| Soil 3 (siSa) | 1.789 | 2.650 | 0.325 | 0.481 | 0.704 |
| Soil 4 (saSi) | 1.797 | 2.661 | 0.325 | 0.481 | 0.811 |
Saturation ratios after the test
| Type of material | Saturation ratios Sr | ||
|---|---|---|---|
| before the test | after the test | ||
| frozen soil | unfrozen soil | ||
| Soil 1 | 0.454 | 1.121 | 0.663 |
| Soil 2 | 0.501 | 0.853 | 0.676 |
| Soil 3 | 0.704 | 0.711 | 0.559 |
| Soil 4 | 0.811 | 0.936 | 0.667 |
The Pearson correlation coefficient r
| Type of material | Content of fractions | Height of frost heaving Wp | Pearson correlation coefficient r | |
|---|---|---|---|---|
| [%] | [mm] | [-] | ||
| Soil 2 (saCl) | Silt fraction | 19 | 21.5 | 0.54 |
| Soil 3 (siSa) | 30 | 1.6 | ||
| Soil 4 (saSi) | 50 | 4.7 | ||
| Soil 1 (clsaSi) | 65 | 48.8 | ||
| Soil 3 (siSa) | Silt and clay fraction | 30 | 1.6 | 0.83 |
| Soil 2 (saCl) | 40 | 21.5 | ||
| Soil 4 (saSi) | 50 | 4.7 | ||
| Soil 1 (clsaSi) | 70 | 48.8 | ||