Foreword
by Allen H. Reed, Khalid A. Alshibli
Advances in Computed Tomography for Geomaterials: GeoX 2010
- Cover
- Title Page
- Copyright
- Organizing Committee
- International Advisory Committee
- Foreword
- Sand Deformation at the Grain Scale Quantified Through X-ray Imaging
- Quantitative Description of Grain Contacts in a Locked Sand
- 3D Characterization of Particle Interaction Using Synchrotron Microtomography
- Characterization of the Evolving Grain-Scale Structure in a Sand Deforming under Triaxial Compression
- Visualization of Strain Localization and Microstructures in Soils during Deformation Using Microfocus X-ray CT
- Determination of 3D Displacement Fields between X-ray Computed Tomography Images Using 3D Cross-Correlation
- Characterization of Shear and Compaction Bands in Sandstone Using X-ray Tomography and 3D Digital Image Correlation
- Deformation Characteristics of Tire Chips-Sand Mixture in Triaxial Compression Test by Using X-ray CT Scanning
- Strain Field Measurements in Sand under Triaxial Compression Using X-ray CT Data and Digital Image Correlation
- Latest Developments in 3D Analysis of Geomaterials by Morpho+
- Quantifying Particle Shape in 3D
- 3D Aggregate Evaluation Using Laser and X-ray Scanning
- Computation of Aggregate Contact Points, Orientation and Segregation in Asphalt Specimens Using their X-ray CT Images
- 1. Introduction
- 2. Materials and characteristics of the x-ray CT equipment
- 3. Image processing procedure to segment aggregates
- 4. Calculation of aggregate-to-aggregate contact points
- 5. Calculation of the orientation of aggregates
- 6. Calculation of the segregation of aggregates
- 7. Conclusions
- 8. References
- Integration of 3D Imaging and Discrete Element Modeling for Concrete Fracture Problems
- Application of Microfocus X-ray CT to Investigate the Frost-induced Damage Process in Cement-based Materials
- Evaluation of the Efficiency of Self-healing in Concrete by Means of µ-CT
- Quantification of Material Constitution in Concrete by X-ray CT Method
- Sealing Behavior of Fracture in Cementitious Material with Micro-Focus X-ray CT
- Extraction of Effective Cement Paste Diffusivities from X-ray Microtomography Scans
- Contributions of X-ray CT to the Characterization of Natural Building Stones and their Disintegration
- Characterization of Porous Media in Agent Transport Simulation
- Two Less-Used Applications of Petrophysical CT-Scanning
- Trends in CT-Scanning of Reservoir Rocks
- 3D Microanalysis of Geological Samples with High-Resolution Computed Tomography
- Combination of Laboratory Micro-CT and Micro-XRF on Geological Objects
- Quantification of Physical Properties of the Transitional Phenomena in Rock from X-ray CT Image Data
- Deformation in Fractured Argillaceous Rock under Seepage Flow Using X-ray CT and Digital Image Correlation
- Experimental Investigation of Rate Effects on Two-Phase Flow through Fractured Rocks Using X-ray Computed Tomography
- Micro-Petrophysical Experiments Via Tomography and Simulation
- Segmentation of Low-contrast Three-phase X-ray Computed Tomography Images of Porous Media
- X-ray Imaging of Fluid Flow in Capillary Imbibition Experiments
- Evaluating the Influence of Wall-Roughness on Fracture Transmissivity with CT Scanning and Flow Simulations
- In Situ Permeability Measurements inside Compaction Bands Using X-ray CT and Lattice Boltzmann Calculations
- Evaluation of Porosity in Geomaterials Treated with Biogrout Considering Partial Volume Effect
- Image-Based Pore-Scale Modeling Using the Finite Element Method
- Numerical Modeling of Complex Porous Media For Borehole Applications
- Characterization of Soil Erosion due to Infiltration into Capping Layers in Landfill
- On Pore Space Partitioning in Relation to Network Model Building for Fluid Flow Computation in Porous Media
- 3D and Geometric Information of the Pore Structure in Pressurized Clastic Sandstone
- Evaluation of Pressure-dependent Permeability in Rock by Means of the Tracer-aided X-ray CT
- Assessment of Time-Space Evolutions of Intertidal Flat Geo-Environments Using an Industrial X-ray CT Scanner
- Neutron Imaging Methods in Geoscience
- Progress Towards Neutron Tomography at the US Spallation Neutron Source
- Synchrotron X-ray Micro-Tomography and Geological CO2 Sequestration
- Residual CO2 Saturation Distributions in Rock Samples Measured by X-ray CT
- X-ray CT Imaging of Coal for Geologic Sequestration of Carbon Dioxide
- Comparison of X-ray CT and Discrete Element Method in the Evaluation of Tunnel Face Failure
- Plugging Mechanism of Open-Ended Piles
- Development of a Bending Test Apparatus for Quasi-dynamical Evaluation of a Clayey Soil Using X-ray CT Image Analysis
- Author Index
Foreword
Geomaterials are often the fundamental building blocks of infrastructure. They are the soil, sediment and rock upon which manufactured geomaterials, such as asphalt, composites and concrete are laid or poured. Geomaterials are also a fundamental foundation of modern society, providing energy through coal, gas, oil, etc. Working with these materials provides interesting, complex and difficult challenges, such as modification, construction, maintenance and repair of the building blocks as along with extraction of energy and sequestration of carbon dioxide. In this book, numerous techniques are presented to address issues that stem from the use and evaluation of geomaterials with computed tomography (CT) imagery.
CT imagery provides a basis by which many complex structures/feature within geomaterials can be visualized and evaluated. CT sections the scanned material into small parts and then reconstructs these parts into three-dimensional images. This process has seen widespread used in medical fields and has grown increasingly common in diagnosing ailments in humans. At the same time, CT has been applied to geomaterials, which are being studied for industrial and research purposes.
In this book, advances in CT are presented that are built upon petroleum research conducted in the late 1980s and was first addressed by a collective international group of researchers at GeoX2003 workshop (Japan) and then again addressed by a international effort at GeoX2006 (Aussois, France). GeoX2010 follows in the tradition of this great research by applying the latest tools and techniques to computed tomography in studies of geomaterials.
This book is a compilation of 49 papers presented at GeoX2010 in New Orleans, Louisiana, USA, March 1-3, 2010. These papers address geomaterials from many perspectives by: 1) using advanced software and numerical methods to address complex geometries efficiently and more completely; 2) applying novel imaging techniques, such as neutron and nanometer scale tomography as well as traditional x-ray computed tomography; 3) addressing issues related to energy exploration and climate change; 4) flow through porous media and 5) coupling computed tomography with geotechnical testing methods to address deformations and progress of failure in sand, rock, asphalt and concrete.
Overall, this compilation is a broad-based address of CT applications to geomaterials that has been made possible by the efforts of faculty members from Louisiana State University and the Naval Research Laboratory, Stennis Space Center, Mississippi and due to the innovation and sustained research efforts by the authors, their support and their staff.
Khalid A. ALSHIBLI
Allen H. REED
All the chairs and reviewers that helped out with these papers
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