Evaluation of the overall strength of cement-treated soil ground with spatial variability

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Laboratory tests and finite element analyses were conducted to develop the design procedure for evaluating the overall strength of a cement-treated column where strength varies spatially. Unconfined compression tests were mainly carried out for the sample consisting of different strength parts. The comparison between the laboratory and numerical results indicates that the finite element method used in this study can describe the behavior of the cement-treated sample consisting of different strength parts. The finite element analyses are conducted to evaluate the behavior of a full scale column where strength varies spatially. The numerical results suggest that the autocorrelation distance affects significantly the overall strength of the full scale column. The probability of failure of the full scale column for a compression load is calculated from the numerical results.