Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | QUASY-STEADY CENTRIFUGE METHOD FOR UNSATURATED HYDRAULIC CHARACTERIZATION |
| Abstract | Centrifugal force is advantageous for hydraulic property measurement because it allows measurement of lower hydraulic conductivity values, faster experiments, and higher accuracy than methods relying on gravitational and matric driving forces. The great force permits measurement of properties and conditions that are otherwise impossible or impractical. The quasi-steady centrifuge (QSC) method is a variation of the steady-state centrifuge (SSC) method we have developed for relatively simple and inexpensive implementation and other features. It achieves these advantages by somewhat relaxing the criterion for steadiness of flow through the sample. This compromise entails an increase in measurement uncertainty, but to a degree that in most applications would be tolerable and well worth the gains in simplicity of apparatus, larger sample capacity, and adaptability to various machines and operating conditions. We have tested this new experimental approach with easily constructed apparatus to establish a quasi-steady flow of water in unsaturated porous rock samples. |
| Source | INT. SYMP. ON ADVANCED EXPERIMENTAL UNSATURATED SOIL MECHANICS, TRENTO, 27-29 June 2005 |
| Year | 2005 |
| Type | Contributo in atti di convegno |
| Authors | CAPUTO M.C.; NIMMO J.R. |
| Text | 89529 2005 QUASY STEADY CENTRIFUGE METHOD FOR UNSATURATED HYDRAULIC CHARACTERIZATION CAPUTO M.C.; NIMMO J.R. CAPUTO M.C. Water Research Institute, IRSA CNR, Bari, Italy NIMMO J.R. U.S. Geological Survey, Menlo Park, CA, United States Centrifugal force is advantageous for hydraulic property measurement because it allows measurement of lower hydraulic conductivity values, faster experiments, and higher accuracy than methods relying on gravitational and matric driving forces. The great force permits measurement of properties and conditions that are otherwise impossible or impractical. The quasi steady centrifuge QSC method is a variation of the steady state centrifuge SSC method we have developed for relatively simple and inexpensive implementation and other features. It achieves these advantages by somewhat relaxing the criterion for steadiness of flow through the sample. This compromise entails an increase in measurement uncertainty, but to a degree that in most applications would be tolerable and well worth the gains in simplicity of apparatus, larger sample capacity, and adaptability to various machines and operating conditions. We have tested this new experimental approach with easily constructed apparatus to establish a quasi steady flow of water in unsaturated porous rock samples. Advanced Experimental Unsaturated Soil Mechanics Proceedings of the International Symposium on Advanced Experimental Unsaturated Soil Mechanics Alessandro Tarantino, Edgardo Juan Romero, Y.J. Cui 9780415383370 http //books.google.it/books id=I2EX1H6nHFQC INT. SYMP. ON ADVANCED EXPERIMENTAL UNSATURATED SOIL MECHANICS TRENTO 27 29 June 2005 Internazionale Contributo articolo pubblicato QUASY STEADY CENTRIFUGE METHOD FOR UNSATURATED HYDRAULIC CHARACTERIZATION Caputo_Nimmo_reformatted_by_editor.pdf Contributo in atti di convegno Taylor and Francis Advanced Experimental Unsaturated Soil Mechanics Proceedings of the International Symposium on Advanced Experimental Unsaturated Soil Mechanics Advanced Experimental Unsaturated Soil Mechanics Proceedings of the International Symposium on Advanced Experimental Unsaturated Soil Mechanics mariaclementina.caputo CAPUTO MARIA CLEMENTINA TA.P04.005.005 Gestione integrata delle informazioni ambientali |