Letter. Morphological quantification of hierarchical geomaterials by X-ray nano-CT bridges the gap from nano to micro length scales
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Sebastien Brisard
Abstract
Morphological quantification of the complex structure of hierarchical geomaterials is of great relevance for Earth science and environmental engineering, among others. To date, methods that quantify the 3D morphology on length scales ranging from a few tens of nanometers to several hundred nanometers have had limited success. We demonstrate, for the first time, that it is possible to go beyond visualization and to extract quantitative morphological information from X-ray images in the aforementioned length scales. As examples, two different hierarchical geomaterials exhibiting complex porous structures ranging from nanometer to macroscopic scale are studied: a flocculated clay water suspension and two hydrated cement pastes. We show that from a single projection image it is possible to perform a direct computation of the ultra-small angle-scattering spectra. The predictions matched very well the experimental data obtained by the best ultra-small angle-scattering experimental setups as observed for the cement paste. In this context, we demonstrate that the structure of flocculated clay suspension exhibit two well-distinct regimes of aggregation, a dense mass fractal aggregation at short distance and a more open structure at large distance, which can be generated by a 3D reaction limited cluster-cluster aggregation process. For the first time, a high-resolution 3D image of fibrillar cement paste cluster was obtained from limited angle nanotomography.
© 2015 by Walter de Gruyter Berlin/Boston
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Articles in the same Issue
- Redetermination of the structure of 5C pyrrhotite at low temperature and at room temperature
- Thermal elastic behavior of CaSiO3-walstromite: A powder X-ray diffraction study up to 900 °C
- Magnesiohögbomite-2N4S: A new polysome from the central Sør Rondane Mountains, East Antarctica
- Hanjiangite, a new barium-vanadium phyllosilicate carbonate mineral from the Shiti barium deposit in the Dabashan region, China
- Combined neutron and X-ray diffraction determination of disorder in doped zirconolite-2M
- Focused ion beam preparation and characterization of single-crystal samples for high-pressure experiments in the diamond-anvil cell
- Phase stability and elastic properties of the NAL and CF phases in the NaMg2Al5SiO12 system from first principles
- Redistribution of REE, Y, Th, and U at high pressure: Allanite-forming reactions in impure meta-quartzites (Sesia Zone, Western Italian Alps)
- MAS NMR measurements and ab initio calculations of the 29Si chemical shifts in dumortierite and holtite
- Aluminum ordering and clustering in Al-rich synthetic phlogopite: {1H} → 29Si CPMAS HETCOR spectroscopy and atomistic calculations
- Cell assemblies for reproducible multi-anvil experiments (the COMPRES assemblies)
- Recrystallization rims in zircon (Valle d’Arbedo, Switzerland): An integrated cathodoluminescence, LA-ICP-MS, SHRIMP, and TEM study
- Temperature and humidity effects on ferric sulfate stability and phase transformation
- Unraveling complex <2 μm clay mineralogy from soils using X-ray diffraction profile modeling on particle-size sub-fractions: Implications for soil pedogenesis and reactivity
- Variations in elastic and anelastic properties of Co3O4 due to magnetic and spin-state transitions
- High-pressure behavior of space group P2/n omphacite
- Twinning in pyromorphite: The first documented occurrence of twinning by merohedry in the apatite supergroup
- Spectroscopic characterization of alkali-metal exchanged natrolites
- Coupled (Li+, Al3+) substitutions in hydrous forsterite
- Crystal chemistry of trioctahedral micas-2M1 from Bunyaruguru kamafugite (southwest Uganda)
- Menchettiite, AgPb2.40Mn1.60Sb3As2S12, a new sulfosalt belonging to the lillianite series from the Uchucchacua polymetallic deposit, Lima Department, Peru
- Adolfpateraite, K(UO2)(SO4)(OH)(H2O), a new uranyl sulphate mineral from Jáchymov, Czech Republic
- Amorphous materials: Properties, structure, and durability
- Amorphous materials: Properties, structure, and durability
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- Letter. Morphological quantification of hierarchical geomaterials by X-ray nano-CT bridges the gap from nano to micro length scales
