Search results for "grain-scale investigation"

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X-ray Computed Tomography for Capillary Collapse of Loose Unsaturated Sand

2016

Abstract The collapse of unsaturated soils consists of the reduction in volume upon wetting at constant total stress. Several studies at the macro scale outline the influence of initial void ratio, confining pressure and matric suction on the onset of collapse of standard laboratory specimens. Conversely, few observations at the micro scale are available in the literature, although the influence of the particles arrangement and intergranular bonding has been formerly supposed. The collapse of fine sand derived by a pyroclastic soil of Southern Italy is investigated in this paper at the microscale using the X-ray Computed Tomography. The experimental procedure, formerly tested on similar pyr…

characterisation at local and global scalesSuctionMaterials sciencegrain-scale investigation0211 other engineering and technologiesCollapse (topology)Capillary collapse; characterisation at local and global scales; grain-scale investigation; X-Ray Computed Tomography; Engineering (all)Capillary collapse02 engineering and technologyGeneral MedicineOverburden pressure01 natural sciencesVoid ratioEngineering (all)0103 physical sciencesGeotechnical engineeringWetting010306 general physicsPorositySaturation (chemistry)Water contentEngineering(all)X-Ray Computed Tomography021101 geological & geomatics engineeringProcedia Engineering
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