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Laboratory evaluation of the effect of fines, confine stress and dry density on the permeability characteristics in sand columns is presented. The triaxial permeability tests were conducted on different contents of fines(5, 15, 25, 35%), confine stress (σ₃′ = 0.5, 1.0, 2.0, 3.0 ㎏/㎠), and dry density(γd = 1.50, 1.55, 1.60, 1.65g/㎤). The results of triaxial permeability tests showed that as the contents of fines, confine stress and dry density became increase permeability became decrease. For the contents of fines, when the fines that smaller than 0.01㎜ increases the permeability decreases significantly. For the confine stress and the dry density, the permeability is decreased significantly at changes of the confine stress(σ₃′ = 0.5~1.0 ㎏/㎠) and the dry density(γd = 1.50~1.55 g/㎤) at lower levels. |
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