We have developed a new Small Angle X-ray Scattering (SAXS) technique by use of reflection geometry for determining particle / pore size distribution in thin film. In order to avoid strong specular reflection, we used offset scan (2θ / θ+δθ) for measuring scattering data. To deal with reflection and refraction at surface and interfaces, we calculated X-ray wave field in the film based on Distor...

Characterization of mesoporous adsorbents is traditionally performed in terms of the pore size distribution with bulk methods like physisorption and mercury intrusion. But their application relies on assumptions regarding the basic pore geometry. Although novel tools have enabled the quantitative interpretation of physisorption data for adsorbents having a well-defined pore structure the analys...

Low field NMR T2 distribution is an efficient tool for characterizing pore size distribution in porous media. For multimodal systems, a new technique called T2-storeT2 allows the analysis of diffusional pore to pore exchange that is extremely useful for the characterization of connectivity. This technique uses 2D inverse Laplace techniques and produces T2-T2 maps. Qualitatively, a system is cou...

Image correlation spectroscopy (ICS) is known to be a useful tool for the evaluation of fiber width in the extracellular matrix. Here we evaluate a more general from of ICS fit parameters for fiber networks and arrive at a means of quantifying the fiber density, pore size and length which facilitates the characterization of the extracellular matrix. A simulation package was made to create image...

for all properties whereas tillage practices contributed the most to the variation of infiltrability. Tillage causes soil fragmentation thereby increasing the proportion Quantifying the temporal dynamics of the PSD may of interaggregate (structural) pore space. The resulting tilled layer have important applications, but to do so in a determintends to be structurally unstable as manifested by a ...

The high porosity and microstructure of bio-aggregates are fundamental to their physical properties. Typically they have a low density and a complex pore structure. This has two principal effects. In the first instance, low density is associated with low strength, but also with low thermal conductivity. For this reason most bio-aggregates are not suitable for use as structural materials, but ar...

A computer algorithm is implemented to construct 3D cubic pore networks that simultaneously honor nuclear magnetic resonance (NMR) and mercury injection capillary pressure (MICP) measurements on core samples. The algorithm uses discretized pore-body size distributions from NMR and pore-throat size vs. incremental pore-volume fraction information from MICP as initial inputs. Both pore-throat rad...

This work analyses the applicability of the Lucas–Washburn equation to experimental observations of imbibition into real network structures. The experimental pore structures used in this study are constructed from tablets of two finely ground calcium carbonates, with defined differences in particle size distribution. These are compressed under a range of different applied pressures to achieve a...