STUDY OF EQUILIBRIUM AND WATER MOVEMENT PHENOMENA IN SOIL. APPLICATION OF THE PSYCHROMETRIC METHOD TO THE MECHANICS OF UNSATURATED SOILS

ETUDE DES PHENOMENES D'EQUILIBRE ET DE MOUVEMENT DE L'EAU DANS LES SOLS-APPLICATION DE LA METHODE PSYCHROMETRIQUE EN MECANIQUE DES SOLS NON-SATURES

TO DEVELOP METHODS OF MEASURING AND INSTALLING APPARATUS FOR THE ROUTINE LABORATORY DETERMINATION OF SOIL RETENTION CURVES. THIS AIM WAS REACHED AND CARE WAS TAKEN TO ADAPT MEASUREMENT METHODS TO SAMPLES WHICH WERE AS LITTLE DISTURBED AS POSSIBLE AND WERE OF DIMENSIONS THAT FACILITATED THE CONDUCT OF FUTURE MECHANICAL TESTS. AN AUTOMATIC SYSTEM OF PSYCHROMETRIC MEASUREMENTS, THE RESULTS OF WHICH CAN BE PROGRAMMED, WAS SET UP AND IS NOW IN SUCCESSFUL OPERATION WITH APPROXIMATELY TWENTY PSYCHROMETERS .