## 4 Discussion
### Relationship between Moisture Content and Unconfined Compressive Strength  
On the first day, the silt sample with an MC of 29.71% exhibited a strength of 0.11 MPa. When the sample had an MC of 27.39%, a strength of 0.11 MPa and a resistance of 0.17 MPa were obtained. This is the critical point at which MC remains optimal before decreasing further and losing its strength. Three zones were identified for the analysis of the storage behavior of the silty soil, as shown in Figure 17a. * Region 1 (days 0-18) is characterized by an increase in the UCS with a decrease in MC. The soil resistance increases, and suction decreases. Initially, there was an increase in strength, and thus in the ME, followed by a critical point at which the strength began to approach the UCS peak point at approximately day 18. * Region 2 (day 18-30) shows that the UCS reached its maximum value, while the MC continued to decrease. The MC was between the maximum values of the UCS, which was approximately 28.25%. It is assumed that suction intensifies the attractive forces between the particles and increases cohesion because the surrounding water film becomes thinner. * Region 3 (>day 30): a decrease in moisture content results in a thinner and more discontinuous water film, significantly reducing capillary forces and cohesion. Consequently, both UCS and MC exhibited a decreasing trend. The organic soil sample exhibited a strength of 0.05 MPa with an MC of 157.65% on the first day, which decreased to 148.32%. The maximum strength of 0.10 MPa was observed at 28 days. The soil demonstrated a decrease in moisture content and strength after 56 days (0.07 MPa), which can be observed in all three regions, similar to the silty soil, for the purpose of analyzing the storage behavior of the silty soil (Figure 17b). * Region 1 (days 0-14) is characterized by an increase in the UCS with a decrease in MC. It was observed that the soil became more resistant, and the suction decreased, similar to the behavior of silty soil. In this region, there was an increase in strength, and thus in the ME, followed by a critical point where the strength began to approach the UCS peak point at approximately day 14. * Region 2 (day 14-33) shows that the UCS reached its maximum value, while the MC continued to decrease. The MC is between the maximum values of the UCS, 152% and 165%. This region has a larger gap of days to reach the maximum value of the UCS compared to silty soil. Figure 17: UCS vs. MC vs. time: (**a**) silt; (**b**) organic Soil. * Region 3 (>day 30) showed a trend of decreasing UCS and MC, considering that the initial and final values of UCS (day 0) and (day 56) were lower than those of silty soil. One factor that could influence the obtained results is the effect of suction in the soil, which influences the determination of the strength. First, the suction was composed of matric and osmotic suction [31], where the matric suction was the negative pressure experienced by the water within the soil pores owing to the capillary forces acting between the soil particles and water molecules. On the other hand, osmotic suction refers to the difference between the solutes between the water inside the soil pores and the water around it, attracting water molecules with lower concentration to those with higher concentration, creating a negative pressure between the soil pores [32]. [PERSON] et al. [33] reported that the relationship between resistance and suction is complex and can be affected by factors such as soil type and density. According to [PERSON] et al. [34], as the MC decreases, the suction matric increases, and in turn, the percentage of deformation increases because the sample is very dry, which reduces its resistance. On the other hand, [PERSON] et al.