International Journal of Soil Science1816-4978xxxx-xxxxAcademic Journals Inc.10.3923/ijss.2009.57.66NarraS. 2200942The objective of this study is to investigate the influence of different consolidation curve models on the initial void ratio values and through which on the obtained pre-consolidation stress. Further, this study verifies the dependence of pre-consolidation stress on the initial void ratio value measured at 1 kPa. This was done in order to check the trend between the consolidation curve models and the deviation in pre-consolidation stresses. Three different Oedometer tests have been carried out which were denoted as undisturbed, disturbed and disturbed-rewetted. The curves were fitted using two different curve models (Assouline and Van Genuchten models) and the graphical calculation of the pre-consolidation stress was done using two different methods (Casagrande and Silva methods). The curve models are applied on the compaction data obtained from the soil classified as loamy sand. A good consolidation curve fit to the data (R2 ranging between 0.97 and 0.99) has been verified for a wide range of applied stresses (0 to 2500 kPa), including stresses less than the pre-consolidation stress. Huge differences in the initial void ratio values (Δe ranging between 0.003 and 0.423) have been observed with different curve models and with which a huge difference in pre-consolidation stresses (ΔP ranging between 0 and 57 kPa) have been observed. This study clearly showed that the pre-consolidation value obtained was mainly dependent on the curve fitting model and also on the calculating method. This study also showed a dependence of pre-consolidation stress over the void ratio measured at 1 kPa.]]>Assouline, S., J. Tavares-Filho and D. Tessier,199761390398Assouline, S.,20026617841787Bailey, A.C., C.E. Johnson and R.L. Schafer,198633257262Baumgartl, Th. and B. Kock,2004685765Casagrande, A.,19361936pp: 6064Cavalieri, K.M.V., J. Arvidsson, A.P. Silva and T. Keller,2008981726Fritton, D.D.,200165678684Mcbride, R.A. and P.J. Joosse,199660373380Silva, P.F.,19701970pp: 225232Van Genuchten, M.T.,198044892898Gregory, A.S., W.R. Whalley, C.W. Watts, N.R.A. Bird, P.D. Hallett and A.P. Whitmore,2006894557