X-ray microtomography to characterize the physical properties of soil and particulate systems

Macedo, Álvaro; Vaz, C. M. P.; Naime, J. M.; Cruvinel, P. E.; Crestana, Sı́lvio

doi:10.1016/s0032-5910(98)00170-3

Cited by 22 publications

(14 citation statements)

References 5 publications

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“…Such analyses have been applied to unconsolidated (glass beads, soil) and consolidated (sandstone, carbonate rock, chalk, basalt) media (e.g., Schwartz et al, 1994; Spanne et al, 1994; Coker et al, 1996, Lindquist et al, 1996; Auzerais et al, 1996; Song et al, 2001; Nakashima et al, 2004, Arns et al, 2005; Lehmann et al, 2006; Nunan et al, 2006; Øren et al, 2007). High-resolution non-synchrotron MT has been used to examine physical properties of soil, such as pore structure (e.g., Macedo et al, 1999; Perret et al, 2000; Cislerova and Votrubova, 2002), and of fractured media (e.g., Karpyn et al, 2007, Noiriel et al, 2007; Peth et al, 2008). …”

Section: Imaging Applicationsmentioning

confidence: 99%

A review of non-invasive imaging methods and applications in contaminant hydrogeology research

Werth

Zhang

Brusseau

et al. 2010

Journal of Contaminant Hydrology

183

115

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Section: Imaging Applicationsmentioning

confidence: 99%

A review of non-invasive imaging methods and applications in contaminant hydrogeology research

Werth

Zhang

Brusseau

et al. 2010

Journal of Contaminant Hydrology

183

115

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“…Microtomography is similar to CT, except that it uses a microfocus X-ray source and a high resolution X-ray detector making it possible to measure the internal structure of materials in three dimensions at high resolution. HRCT has been successfully used to examine properties of cement concrete in recent years (Shah and Choi 1999;Landis and Keane 1999;Stock et al 2002;Naik et al 2004) as well as for characterizing the physical properties of soil and particulate systems (Macedo et al 1999;Halverson et al 2005).…”

Section: Preliminary Studies Using X-ray High Resolution Computed Tommentioning

confidence: 99%

Characterization of Asphalt Materials Using X-Ray High-Resolution Computed Tomography Imaging Techniques

Gopalakrishnan¹,

Ceylan²,

Inanc³

et al. 2006

Airfield and Highway Pavement

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X-ray Computerized Tomography (CT) has emerged as a powerful, nondestructive tool to study and quantify the three-dimensional internal structure of HMA. Studies, in conjunction with modeling and computational techniques, have focused on characterization of HMA internal air-void distribution, internal structure evolution during laboratory compaction, damage evolution in specimens during laboratory tests, segregation analysis, forensic investigation of pavements using cores, and the quantification of HMA microstructural properties. The Center for Nondestructive Evaluation (CNDE) at Iowa State University (ISU) has an inhouse built high-resolution CT system with customized software for data acquisition, volumetric file reconstruction, and visualization. Preliminary studies were conducted at the CNDE to investigate the capabilities and resolution levels of the imaging systems in studying asphalt materials. Researchers at both ISU and Iowa Department of Transportation are currently using the advanced imaging facilities available at the CNDE and the latest developments in image analysis techniques to develop a deeper understanding of the HMA internal structure, develop and optimize the various parameters that describe the internal structure and relate them to the performance of pavements in a scientific way. This will provide the foundations to building more durable and long-lasting pavements. This conference proceeding is available at Iowa State University Digital Repository: http://lib.dr.iastate.edu/ccee_conf/25Reference to this paper should be made as follows: Gopalakrishnan, K., Ceylan, H., Inanc, F., and Heitzman, M. Abstract X-ray Computerized Tomography (CT) has emerged as a powerful, nondestructive tool to study and quantify the three-dimensional internal structure of HMA. Studies, in conjunction with modeling and computational techniques, have focused on characterization of HMA internal air-void distribution, internal structure evolution during laboratory compaction, damage evolution in specimens during laboratory tests, segregation analysis, forensic investigation of pavements using cores, and the quantification of HMA microstructural properties. The Center for Nondestructive Evaluation (CNDE) at Iowa State University (ISU) has an in-house built high-resolution CT system with customized software for data acquisition, volumetric file reconstruction, and visualization. Preliminary studies were conducted at the CNDE to investigate the capabilities and resolution levels of the imaging systems in studying asphalt materials. Researchers at both ISU and Iowa Department of Transportation are currently using the advanced imaging facilities available at the CNDE and the latest developments in image analysis techniques to develop a deeper understanding of the HMA internal structure, develop and optimize the various parameters that describe the 1 Reference to this paper should be made as follows: Gopalakrishnan, K., . "Characterization of Asphalt Materials using X-ray High-Resolution Computed Tomography Imaging...

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“…More recently, the need to look inside porous media at the level of pores and aggregates in order to observe the topology and geometry of the pores, as well as other applications, led to the development of micrometric scale tomography. This implied a specific study of radiation sources, detectors, collimators, mechanics, hardware and software to design dedicated systems for different fields such as archaeometry, soil physics, porous materials and other applications 1,2 . Knowledge of the porous structure of amorphous materials is required to calculate microstructural parameters, such as pore size distribution and total porosity, and important for deriving the physical parameters of fluid flow in the sample, such as permeability.…”

Section: Introductionmentioning

confidence: 99%

Ceramic foams porous microstructure characterization by X-ray microtomography

et al. 2004

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Knowledge of the porous structure of amorphous materials is of fundamental importance in calculating geometrical parameters such as total porosity, pore size distribution and physical parameters relating to fluid flow inside void space. The present work deals with the measurement of the microstructural parameters of porous ceramic filters. Microtomographic measurements of samples were taken using an X-ray tube. Bremsstrahlung radiation was filtered in transmission mode with a Sn filter at 58.5 and 28.3 keV and the images analyzed in two ways. The first method consisted in analyzing transepts of the images in order to calculate total porosity based on the average particle size and media linear attenuation coefficients. The second method involved a study of the images using an image analysis software, called Imago, which allows one to calculate total porosity and pore size distribution. The total measured porosity of the filter C90 was 73.8%, 71.1%, 74.4% and 71.5% by, respectively, the Arquimedes method, simple gamma ray transmission, transept analysis and analysis of the microtomographic images at 28.3 keV.

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X-ray microtomography to characterize the physical properties of soil and particulate systems

Cited by 22 publications

References 5 publications

A review of non-invasive imaging methods and applications in contaminant hydrogeology research

A review of non-invasive imaging methods and applications in contaminant hydrogeology research

Characterization of Asphalt Materials Using X-Ray High-Resolution Computed Tomography Imaging Techniques

Ceramic foams porous microstructure characterization by X-ray microtomography

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