Estimation of soil permeability

Assessment of Permeability Characteristics of Ado-Ekiti to Ikere-Ekiti Road Soil, Southwestern Nigeria

“…As the foundation for the pavement's upper layers, the sub-grade and sub key role in mitigating the detrimental effects of climate and the static and dynamic stresses generated by traffic. Therefore, building a stable sub properly drained sub-base is vital for constructing an effective and long lasting pav permeability of pavement layers in a typical road must be in descending order of subgrade > subbase > base ( [4], [8]).…”

“…Page: 716 these variables have both short and long term effects on the geotechnical characteristics of the soil ([4], [8]).…”

“…While volume changes occur when pavement layers (i.e. base, sub base and sub grade) are exposed to excessive moisture or freezing conditions ( [4], [8]).…”

“…Another means is to experimentally derive coefficients of permeability from the results of simple laboratory tests such as the Grain size distribution. Anyway, soil permeability had also been estimated using Cone penetration tests [8].…”

“…The existence of linked voids that allow the flow of fluids when change in energy head occurs showed that soils are permeable materials. There is need for good knowledge of soil permeability in order to estimate the quantity of water or fluid flow in soil [8].…”