## 3 Results and Discussion
### Piezocone Test Results and Soil Classification  
Figure 4 presents the results of the piezocone tests at points 01, 02, and 03 (Figure 3). For tests CPTu-01, CPTu-02, and CPTu-03, the corrected cone tip resistance (\(q_{\text{c}}\)), the sleeve friction resistance (\(q_{\text{s}}\)), the measured pore water pressure (\(u2\)), and the hydrostatic pressure are presented (\(u0\)). One of the applications of the CPTu test is to classify soil types based on their behavior and thus obtain a profile of the entire soil. This is based on measurements taken in the field. However, it cannot be expected that the piezocone will provide exact predictions of soil type based on physical characteristics such as grain size distribution. Instead, it guides soil's mechanical characterization (strength, stiffness) [33]. The soil characterization through this test is known as \"Soil Behavior Type\" (SBT). The normalized cone resistance (\(Q_{tn}\)) is the cone resistance expressed in a non-dimensional form, considering the in-situ vertical stresses for SBT characterization. The \(Q_{tn}\) is defined as (Equation (3)):  
\[Q_{tn}=(q_{\text{ }t}-\sigma_{v0})/\sigma_{v0}^{\prime} \tag{3}\]  
where \(\sigma_{v0}^{\prime}\) is the effective stress and \(\sigma_{v0}\) is the total stress of soil. Figure 5 was divided into four regions, corresponding to the grain size classification of the soil profile from 0-3 m, 3-6 m, over 6 m, and the complete classification. To better understand the classification and parameters of the soils in the area, the results of the CPTu soundings were superimposed, varying by depth, as seen in Figure 5. These thicknesses were selected considering similar values in cone tip resistance and lateral resistance with depth. This methodology has already been applied in other studies by [PERSON] and [PERSON] [34]. From 0 m to 3 m depth, it can be observed that CPTu-02 and CPTu-03 exhibit a similar classification, ranging from very stiff sand to clayey sand. CPTu-01, in the first 3 m, behaves more like normally consolidated soil. From 3 m to 6 m, all three CPTu soundings show that the soil begins to behave similarly, ranging from silty sand to sandy silts. In this layer, the soils exhibit an OCR close to 1, which can be verified in the soil profile after 6 m, where the behavior is close to 1, and the soil classification is sands. Within the geotechnical profile in the first 10 m, no fine sensitive soils were found, nor were many varieties of soils with high stiffness. The data dispersion demonstrates the variability of the stratum along  
Figure 4: Typical soil profile from piezocone (CPTu) at points 01, 02, and 03 at 20 mm/s penetration. the studied profile. However, it can be observed that most points are concentrated at the boundary between zones 4, 5, and 6, with some occurrences in zones 7 and 3. In general, the soils found exhibit behaviors typical of non-cohesive soils, such as clean sand to silty sand in zone 6; sandy silts to silty sands in zone 5; and silty clays to clayey silts, normally consolidated, without cementation or aging in zone 4. Figure 6 illustrates the results of \(G_{\text{o}}\) stiffness using the methodology proposed by [PERSON] et al. [6; 35], in which parameters of resistance and stiffness are correlated. Although it is recognized that the combination of these two properties serves as a good indicator of soil behavior, the studied soil profile appears to be well characterized in the presented space, predominantly covering a region of clays with low void ratios and regions corresponding to soils with aging and cementation. Figure 6 also compares the \(G_{\text{o}}\) measured with accelerometers and \(G_{\text{o}}\) estimated with [PERSON]'s [6] empirical relationship for SCPTu-01, SCPTu-03, and SCPTu-03. The field-measured \(G_{\text{o}}\) values and the estimated ones are comparable or closely aligned. In the experimental field of EPUSP, resonant column tests with a Hardin oscillator were conducted on soil specimens to determine the  
Figure 5: Soil classification, according to [PERSON] [35].