By Jacques Desrues, Gioacchino Viggiani, Pierre Bésuelle
This ebook brings jointly a complete of forty eight contributions (including five keynote papers) that have been offered on the 2d foreign Workshop at the software of X-ray CT for Geomaterials (GeoX 2006) held in Aussois, France, on 4-7 October, 2006.
The contributions conceal quite a lot of issues, from basic characterization of fabric habit to functions in geotechnical and geoenvironmental engineering. fresh advances of X-ray expertise, and software program also are mentioned. As such, this may be helpful interpreting for someone attracted to the appliance of X-ray CT to geomaterials from either basic and utilized perspectives.Content:
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The X-rays transmitted through the two polycarbonate cell walls, the confining fluid, and the claystone specimen, were converted into visible light by a phosphor screen scintillator. A 1024×1024 Dalstar CCD camera captured the raw digital images from the phosphor screen. The pixel size was 14×14 µm2, and a 1X objective was used for the scans described hereafter. 65 mm2 , which allows to get, for each radiograph, 261 slices of the specimen (10 mm in diameter). 5 minutes. The acquisition of the entire specimen height (20 mm) took no more than 15 minutes, with a voxel size of 14×14×14 µm3.
Following consolidation, a pressure of 20 kPa was applied to the volume change burette connected to the bottom of the specimen. Water was introduced into the specimen, and the influent and effluent water volumes were measured using volume change burettes connected to the bottom and top of the specimen during the water flow. Water flow was continued for one week. The permeability of a specimen made of the same amount of cement treated clay without air foam (CTC) was also measured in order to investigate the effect of the air foam.
Advances in X-ray Tomography for Geomaterials by Jacques Desrues, Gioacchino Viggiani, Pierre Bésuelle