ABSTRACT
We have intensively studied the characteristics of the following two residual soils: Shinnae-dong and Poidong soils. The characteristics of the two soils are documented in Table 1 (i.e., the type of mineral, compaction properties, plasticity, and soil classification). The parent rock of the Shinnae-dong soil is a granite while that of the Poi-dong soil is a banded biotite gneiss.The Shinae-dong soil is closer to a cohesionless soil, predominantly consisting of primary minerals, with only about 10% of fine particles. On the other hand, the Poi-dong soil shows clay-like characteristics due to a large percentage of fine particles and secondary minerals. The particle size distributions of the two soils are shown in Figure 1.
