Research Article
Analysis and Prediction of Stable Height of Capillary Water Rising under Unsaturated Subgrade Soil
Table 4
The comparison of the measured and predicted values of hc of the capillary water rise in the coarse-grained soils.
| | Sample number | Soil type | Pore ratio (e) | Effective size d10 (mm) | Measured value (cm) | Hessian formula C value (×10−5 m2) | Predicted value [8] (cm) | Equation (4) predictive value (cm) | Equation (4) predictive error (cm) |
| | 1# | Silty sand | 0.439 | 0.033 | 248.5 | 3.60 | 208.6 | 241.0 | -7.5 | | 2# | Fine-grained sand | 0.541 | 0.059 | 138.3 | 4.41 | 126.7 | 146.9 | 8.7 | | 3# | Poorly graded medium sand | 0.597 | 0.200 | 69.3 | 8.27 | 65.9 | 66.0 | -3.3 | | 4# | Silty sand | 0.379 | 0.014 | 219.3 | 1.16 | 207.6 | 220.1 | 0.8 | | 5# | Fine-grained sand | 0.524 | 0.075 | 118.0 | 4.64 | 118.1 | 127.8 | 9.8 | | 6# | Poorly graded coarse sand | 0.634 | 0.270 | 63.5 | 10.87 | 61.9 | 56.0 | -7.5 |
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