ABSTRACT

The original grading curves of the LP and NR soils and the two uniform size glass balls are shown on Figure 1. It should be noted that two different batches of LP soils were used for this study. The old batch was used for oedometer tests and the new batch was used for triaxial tests. Figure 1 clearly shows the uniform grain size of the LP soil, with a median grain size (D50) of about 0.32 mm, where NR soil contains a large range of particle size with a D50 of about 0.1 mm. Based on the Unified Soil Classification System, the LP soil can be classified as sand (SP) and NR soil as well graded silty sand (SM).