@article{fdi:010023520, title = {{N}ew device and method for soil shrinkage curve measurement and characterization}, author = {{B}raudeau, {E}rik and {C}ostantini, {J}.{M}. and {B}ellier, {G}{\'e}rard and {C}olleuille, {H}.}, editor = {}, language = {{ENG}}, abstract = {{T}here is a need for a conceptual and analytical model to describe and interpret the common shrinkage curves of structured soil samples. {I}n this work, we propose a new device for direct shrinkage measurements of unconfined structured soil samples and discuss the relevance of parametric models of the shrinkage curve to fit the experimental data. {T}he experimental procedure consists of simultaneous and continuous measurements of the diameter, height, and weight of an initially saturated soil sample as it dries. {T}he shrinkage measurement can be completed for the full moisture range in a short time (2-3 d), and all shrinkage phases can be established easily and accurately identified. {T}he points of transition between the different shrinkage zones of the shrinkage curve are considered as characteristics of the shrinkage process. {T}hey are used as parameters to model the experimental shrinkage curves by linear shrinkage zones separated by curvilinear transition ones. {T}he efficiency of two parametric models to fit the experimental data and to provide the characteristic points of the curve are compared and discussed. {A} new procedure for fitting the shrinkage curves of structured soil samples and for determining the best position of the characteristic points on the curves is proposed. ({R}{\'e}sum{\'e} d'auteur)}, keywords = {{SOL} ; {RESSUYAGE} ; {PROPRIETE} {HYDRIQUE} ; {HUMIDITE} {DU} {SOL} ; {STRUCTURE} {DU} {SOL} ; {METHODE} {D}'{ANALYSE} ; {MESURE} ; {APPAREIL} {DE} {MESURE} ; {MODELE} {MATHEMATIQUE} ; {MODELISATION} ; {ETUDE} {EXPERIMENTALE} ; {ZONE} {TROPICALE} ; {SENEGAL}}, booktitle = {}, journal = {{S}oil {S}cience {S}ociety of {A}merica {J}ournal}, volume = {63}, numero = {3}, pages = {525--535}, ISSN = {0361-5995}, year = {1999}, URL = {https://www.documentation.ird.fr/hor/fdi:010023520}, }