CONSOLIDATION CHARACTERISTICS OF SOLIDIFIED TREATED SOIL CONSIDERING LIQUID LIMIT AND EXCHANGEABLE CATION

<p> The authors investigated the consolidation properties of dehydrated treated soils as they change with the consolidation effect.The authors also estimated the hydraulic conductivity from the exchangeable cation using the theoretical evaluation equation for hydraulic conductivity. In this paper, fall cone tests, constant strain consolidation tests, and flame atomic absorption tests were conducted using solidified treated soil, which is a mixture of dredged clay and solidifier, near the NewKitakyushuAirport in Kitakyushu City, Fukuoka Prefecture, Japan. In the fall cone test, the undrained shear strength and liquid limit were examined. In the constant-strain consolidation test, e-log p curves and the relationship between pore ratio and hydraulic conductivity were obtained. The exchangeable cation of the solidified treated soilafter consolidation was measured bythe flame atomic absorption test, and the hydraulic conductivity was estimated. The results showed that (1) the relationship between the liquid limit, e-log p curve, pore ratio and hydraulic conductivity varied with increasing curing time as the solidified treated soil solidified, and (2) the relationship between the exchangeable cation, e-log p curve, pore ratio and hydraulic conductivity varied with increasing curing time. (2) Comparing the estimated hydraulic conductivity from the exchangeable cation and the measured hydraulic conductivity from the constant strain consolidation test, the estimated value/measured value was estimated to be in the range of 0.05-9.02.</p>