Fig. 7. Relation between macroporosity limit (a) and maximum swelling (b) gravimetric water content values, fitted independently on shrinkage curve (abscissa) and water retention curve (ordinates), respectively, for the whole set of data: 30 repacked samples (open) and 28 undisturbed samples (black). Linear regressions are forced through the origin; R2 is the coefficient of determination.