Search Results - "Ioannidou, Katerina"

The crucial effect of early-stage gelation on the mechanical properties of cement hydrates by Ioannidou, Katerina, Kanduč, Matej, Li, Lunna, Frenkel, Daan, Dobnikar, Jure, Del Gado, Emanuela

“…Gelation and densification of calcium–silicate–hydrate take place during cement hydration. Both processes are crucial for the development of cement strength,…”
Get full text

Mesoscale texture of cement hydrates by Ioannidou, Katerina, Krakowiak, Konrad J., Bauchy, Mathieu, Hoover, Christian G., Masoero, Enrico, Yip, Sidney, Ulm, Franz-Josef, Levitz, Pierre, Pellenq, Roland J.-M., Del Gado, Emanuela

“…Strength and other mechanical properties of cement and concrete rely upon the formation of calcium–silicate–hydrates (C–S–H) during cement hydration…”
Get full text

Multiscale poromechanics of wet cement paste by Zhou, Tingtao, Ioannidou, Katerina, Ulm, Franz-Josef, Bazant, Martin Z., Pellenq, R. J.-M.

“…Capillary effects, such as imbibition drying cycles, impact the mechanics of granular systems over time. A multiscale poromechanics framework was applied to…”
Get full text

Controlling local packing and growth in calcium-silicate-hydrate gels by Ioannidou, Katerina, Pellenq, Roland J-M, Del Gado, Emanuela

“…We investigate the development of gels under out-of-equilibrium conditions, such as calcium-silicate-hydrate (C-S-H) gels that form during cement hydration and…”
Get more information

Capillary Stress and Structural Relaxation in Moist Granular Materials by Zhou, Tingtao, Ioannidou, Katerina, Masoero, Enrico, Mirzadeh, Mohammad, Pellenq, Roland J.-M, Bazant, Martin Z

“…A numerical and theoretical framework to address the poromechanical effect of capillary stress in complex mesoporous materials is proposed and exemplified for…”
Get full text

The physics of cement cohesion by Goyal, Abhay, Palaia, Ivan, Ioannidou, Katerina, Ulm, Franz-Josef, van Damme, Henri, Pellenq, Roland J.-M., Trizac, Emmanuel, Del Gado, Emanuela

“…Ion-water restructuring under confinement is at the origin of ion-specific nanoscale forces that control cement cohesion. Cement is the most produced material…”
Get full text

Clay micromechanics: Mapping the future of particle-scale modelling of clay by Pagano, Arianna Gea, Alonso-Marroquin, Fernando, Ioannidou, Katerina, Radjai, Farhang, O’Sullivan, Catherine

“…Geotechnical engineers need to predict the macroscopic behaviour of clays in terms of strength, stiffness, and permeability and the variation in these…”
Get full text

The Potential of Mean Force concept for bridging (length and time) scales in the modeling of complex porous materials by Ioannidou, Katerina, Carrier, Benoit, Vandamme, Matthieu, Pellenq, Roland

“…We introduce the concept of Potential of Mean Force, PMF, as a way to implement upscaling modeling from the nano-scale to micron-scale. A PMF is a free energy…”
Get full text

Nano-granular texture of cement hydrates by Ioannidou, Katerina, Ulm, Franz-Josef, Levitz, Pierre, Del Gado, Emanuela, Pellenq, Roland J.-M.

“…Mechanical behavior of concrete crucially depends on cement hydrates, the “glue” of cement. The design of high performance and more environmentally friendly…”
Get full text

A review of coarse grained and mesoscale simulations of C–S–H by Ioannidou, Katerina, Labbez, Christophe, Masoero, Enrico

“…The nano-to-micro mesoscale is crucial for cementitious materials; here reactions and interactions between molecules produce complex mechanisms that determine…”
Get full text

Discrete modeling of the calendering process for positive electrodes of Li-ion batteries by Sonzogni, Max, Vanson, Jean-Mathieu, Reynier, Yvan, Martinet, Sébastien, Ioannidou, Katerina, Radjai, Farhang

“…The electronic properties of Li-ion batteries crucially depend on the microstructure of their electrodes. One step of the manufacturing process, called…”
Get full text

How chemical defects influence the charging of nanoporous carbon supercapacitors by Dupuis, Romain, Valdenaire, Pierre-Louis, Pellenq, Roland J-M, Ioannidou, Katerina

“…SignificanceNanoporous carbon texture makes fundamental understanding of the electrochemical processes challenging. Based on density functional theory (DFT)…”
Get full text

Ion Specificity of Confined Ion–Water Structuring and Nanoscale Surface Forces in Clays by Dragulet, Francis, Goyal, Abhay, Ioannidou, Katerina, Pellenq, Roland J.-M., Del Gado, Emanuela

“…Ion specificity and related Hofmeister effects, which are ubiquitous in aqueous systems, can have spectacular consequences in hydrated clays, where…”
Get full text

Heterogeneous Surface Growth and Gelation of Cement Hydrates by Goyal, Abhay, Ioannidou, Katerina, Tiede, Christopher, Levitz, Pierre, Pellenq, Roland J.-M, Del Gado, Emanuela

“…During cement hydration, C–S–H nanoparticles precipitate and form a porous and heterogeneous gel that glues together the hardened product. C–S–H nucleation and…”
Get full text

Le Châtelier’s conjecture: Measurement of colloidal eigenstresses in chemically reactive materials by Abuhaikal, Muhannad, Ioannidou, Katerina, Petersen, Thomas, Pellenq, Roland J.-M., Ulm, Franz-Josef

“…Volume changes in chemically reactive materials, such as hydrating cement, play a critical role in many engineering applications that require precise estimates…”
Get full text

Effect of Confinement on Capillary Phase Transition in Granular Aggregates by Monfared, Siavash, Zhou, Tingtao, Andrade, José E, Ioannidou, Katerina, Radjaï, Farhang, Ulm, Franz-Josef, Pellenq, Roland J-M

“…Using a 3D mean-field lattice-gas model, we analyze the effect of confinement on the nature of capillary phase transition in granular aggregates with varying…”
Get full text

Mesoscale simulation of aggregation of imogolite nanotubes from potential of mean force interactions by Zhu, Hejian, Whittle, Andrew J., Pellenq, Roland J.-M., Ioannidou, Katerina

“…The aggregation of colloidal clay mineral particles plays an important role in controlling the mechanical and transport properties of soils. Interactions and…”
Get full text

Inhomogeneity in Cement Hydrates: Linking Local Packing to Local Pressure by Ioannidou, Katerina, Del Gado, Emanuela, Ulm, Franz-Josef, Pellenq, Roland J.-M

“…AbstractNanoscale structural heterogeneities were recently revealed in computational and experimental studies of calcium silicate hydrates in hardened cement…”
Get full text

Ion specificity of confined ion-water structuring and nanoscale surface forces in clays by Dragulet, Francis, Goyal, Abhay, Ioannidou, Katerina, Pellenq, Roland J. -M, Del Gado, Emanuela

“…J. Phys. Chem. B 2022, 126, 26, 4977-4989 Ion specificity and related Hofmeister effects, ubiquitous in aqueous systems, can have spectacular consequences in…”
Get full text

The physics of cement cohesion by Goyal, Abhay, Palaia, Ivan, Ioannidou, Katerina, Ulm, Franz-Josef, Van Damme, Henri, Pellenq, Roland J. -M, Trizac, Emmanuel, Del Gado, Emanuela

“…Sci. Adv. 7, eabg5882 (2021) Cement is one of the most produced materials in the world. A major player in greenhouse gas emissions, it is the main binding…”
Get full text