Print Email Facebook Twitter Hydrodynamic behaviour of compacted granite sawdust from the dimension stone industry of Pontevedra (Spain) Title Hydrodynamic behaviour of compacted granite sawdust from the dimension stone industry of Pontevedra (Spain): Experimental and Modelling Author Falcon-Suarez, I. (University of Southampton) Juncosa-Rivera, R. (University of A Coruna) Vardon, P.J. (TU Delft Geo-engineering) Rammlmair, D. (Federal Institute for Geosciences and Natural Resources) Gunter, T. (Federal Institute for Geosciences and Natural Resources) Noell, U. (Federal Institute for Geosciences and Natural Resources) Delgado-Martın, J. (University of A Coruna) Date 2016 Abstract Two large-scale column experiments have been performed to test the hydrodynamic behaviour of unsaturated, compacted granite sawdust—a material produced during the dressing of dimension stone in Pontevedra (Spain). One of the columns was equipped with psychrometers and capacitance probes while, in the other, a radial array of 80 electrodes made possible a time-dependent 3D electrical resistivity survey. All these devices allowed investigating and modelling the progressive saturation of the material. The study includes a straightforward methodology developed to calibrate the resistivity signals based on standard Proctor-compacted specimens. The progressive saturation of the granite sawdust reveals different stages: initially, an uneven advance of the saturation front (fingering) occurs; later on, this feature vanishes and is replaced by a more regular advance of the saturation front. Numerical analysis of the results shows that the yield capacity of the granite sawdust is*0.39 m3 m-3 and a saturated hydraulic conductivity *2 9 10-6 m s-1. The latter, which corresponds to the specific standard Proctor compaction, is not sufficient to support the use of granite sawdust for compacted-single-layer capping structures. Nonetheless, increased compaction efforts or improved design criteria (multilayer systems or capillary barriers) can keep bearing when considering granite sawdust for this purpose. Subject Sustainable waste managementSanitary landfillsUnsaturated soil behaviourHydraulic conductivityYield capacityWater fingering To reference this document use: http://resolver.tudelft.nl/uuid:152c6e44-129c-464a-9ccc-85939d760ddc DOI https://doi.org/10.1007/s12665-015-5112-1 Embargo date 2017-02-28 ISSN 1866-6299 Source Environmental Earth Sciences, 75 (5) Part of collection Institutional Repository Document type journal article Rights © 2016 I. Falcon-Suarez, R. Juncosa-Rivera, P.J. Vardon, D. Rammlmair, T. Gunter, U. Noell, J. Delgado-Martın Files PDF art_3A10.1007_2Fs12665_01 ... 5112_1.pdf 2.7 MB Close viewer /islandora/object/uuid:152c6e44-129c-464a-9ccc-85939d760ddc/datastream/OBJ/view