摘要：The pinhole test is an empirical test based on the qualitative evaluation of the dispersivity (colloidal erodibility) ofcompacted fined-grained soils. This study evaluates the pinhole test device for the quantitative assessment of the susceptibilityof soil horizons to piping. The experiments performed on different loess-derived soil horizons, with different hydraulichead and using distilled water show that the clay-enriched horizon (Bt horizon) is less susceptible to piping than thedecalcified (C1) and the calcareous horizon (C2). This study demonstrates that the pinhole test is suitable for assessing thesusceptibility of soil horizons to piping in a quantitative way.
