Influence of silt content and void ratio on the properties of sand silt mixture Md. Ikramul Hoque

Abstract

Consolidation coefficient (C_v), Hydraulic conductivity (K), and volume compressibility coefficient (m_v), especially have an enormous effect on the formation of the pressure in the pores whenever soils with granularity get loaded together with fines in an undrained or partially drained state. The objective of this study is to quantify what is the impact of the soil's void ratio and amount of fines on these soil parameters involved. The results of multiple tests on two poorly graded sands using flexible wall permeameters are displayed and discussed. These tests used nonplastic silt concentrations of 0%, 5%, 10%, 15%, 20%, and 25%. The experimental findings demonstrate that, in both cases, the consolidation and permeability coefficients are rising as the silt concentration falls. So, as the void ratio rises (because of a decrease in silt concentration), the K does as well. The void ratio affects the soil's ability to compress its volume, which has caused some variation. This study reveals that the finer native Khulna sand exhibits poor drainage conditions. In comparison to nearby sand, the somewhat coarser Kushtia Sand has excellent drainage characteristics. As a result, it seems to sense that coarser sand would be better for building any kind of structure. The soil beneath a foundation for a hefty structure or high-rise building should contain less silt.