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Fig. 6. Data on the shrinkage curves of an aggregated clay soil from Hallaire (1984). The el' values (asterisks) give the layer void ratio in Bronswijk's approximation. The es values (circles) give the sample void ratio. The e values (dots) give the aggregate void ratio. The e1 values (squares) give the true layer void ratio. The el values (solid line) give the least squares approximation (and extrapolation) of the square points that were used in the present work. Goodness of fit of the approximation is r2 = 0.975.
