## 3 Results
### Unsaturated Shear Strength and Elastic Modulus  
The shear strength and normal stress at failure were evaluated from the stress-strain curves obtained in the uniaxial compression test. The tangent elastic modulus was determined from the curves. Similar to the samples used to develop the soil water characteristic curve, both disturbed and unaltered samples for the uniaxial compression test were stored in humidity-and temperature-controlled containers for seven days to allow the filter paper to reach equilibrium. Applying Equations (4)-(6), the results obtained for the reconstituted specimens are presented in Table 12, whereas Tables 13 and 14 summarize the data for the undisturbed samples. Figures 13a-g and 14a illustrate the stress-strain curves for the reconstituted and undisturbed samples, respectively. Figures 13b and 15 illustrate the slopes of the secant elastic modulus derived from the stress-strain curves for the undisturbed and reconstituted samples. \begin{table}
\begin{tabular}{c c c c c c c c} \hline
**Soil** & **Water** & **Saturation** & **Matrix** & **Shear** & **Elastic** & **Total** & \\
**Sample** & **Content [\%]** & **Saturation** & **Suction** & **Strength** & **Modulus** & **Normal** & **qu [kPa]** \\
**10\%** & **Content [\%]** & **Content [\%]** & **Content [kPa]** & **Content [kPa]** & **Content [MPa]** & **Content [kPa]** & **Content [kPa]** \\ \hline
5\% (1) * & 8.12 & 27.84 & 6722.30 & 153.41 &  
Figure 13: Stress–strain curves for samples with water contents of: (**a**) 5%; (**b**) 10%; (**c**) 15%; (**d**) 20%; (**e**) 23%; (**f**) 25%; (**g**) 30%. \begin{table}
\begin{tabular}{c c c c c c c c} \hline
**Soil** & **Water** & **Saturation** & **Matric** & **Shear** & **Elastic** & **Total** & \\
**Sample** & **Content [\%]** & **Saturation** & **Suction** & **Strength** & **Modulus** & **Normal** & **qu [kPa]** \\
25\% (3) & 26.48 & 96.35 & 20.23 & 23.66 & 0.32 & 11.54 & 60.10 \\
30\% (1) & 31.01 & 97.51 & 1.72 & 9.11 & 0.13 & 5.05 & 21.50 \\
30\% (2) & 31.42 & 100.00 & 2.03 & 8.09 & 0.10 & 5.88 & 17.00 \\ \hline \end{tabular} \({}^{*}\) Numbers in parentheses (1)–(3) denote replicate measurements performed at the same target water content to evaluate repeatability and data consistency.  
\end{table} 
Table 12: _Cont._ \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**Depth [m]**} & \multicolumn{2}{c}{**Water**} & \multicolumn{2}{c}{**Dry**} & \multirow{2}{*}{**Saturation**} & \multirow{2}{*}{**Drsity**} & \multirow{2}{*}{**Sts**} & \multirow{2}{*}{**Saturation**} & \multirow{2}{*}{**Void Ratio**} \\  & **Content [\%]** & & **Density** & & & **[\%]** & \\  & **Content [\%]** & & **[g/cm\({}^{3}\)]** & & & \\ \hline
2.00–2.50 & 25.58 & 1.18 & 2.52 & 56.79 & 1.14 \\
3.00–3.50 & 38.54 & 1.15 & 2.54 & 81.70 & 1.20 \\
4.00–4.50 & 32.23 & 1.33 & 2.54 & 91.73 & 0.89 \\
5.00–5.50 (1) \({}^{*}\) & 32.48 & 1.25 & 2.52 & 80.99 & 1.01 \\
5.00–5.50 (2) & 32.46 & 1.22 & 2.52 & 77.14 & 1.06 \\
6.00–6.50 & 31.50 & 1.40 & 2.55 & 99.70 & 0.81 \\
7.00–7.50 (1) & 27.82 & 1.44 & 2.55 & 93.96 & 0.76 \\
7.00–7.50 (2) & 27.51 & 1.47 & 2.55 & 98.70 & 0.71 \\
8.00–8.50 & 30.04 & 1.36 & 2.63 & 92.78 & 0.85 \\ \hline \hline \end{tabular} \({}^{*}\) Numbers in parentheses (1)–(2) denote replicate measurements performed at the same depth to evaluate repeatability and data consistency.  
\end{table} 
Table 13: Physical properties of the undisturbed samples. Figure 14: (a) Stress–strain curves for undisturbed samples; (b) Tangent elastic modulus slopes for undisturbed samples.