Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Ioannidou Katerina"'
Autor:
Pagano Arianna Gea, Alonso-Marroquin Fernando, Ioannidou Katerina, Radjai Farhang, O’Sullivan Catherine
Publikováno v:
E3S Web of Conferences, Vol 544, p 07009 (2024)
Geotechnical engineers need to predict the macroscopic behaviour of clays in terms of strength, stiffness, and permeability and the variation in these properties during deformation. Engineers also need to predict the influence of environmental variab
Externí odkaz:
https://doaj.org/article/05a3110f3dab4793b96df014a4e2a5b4
Publikováno v:
EPJ Web of Conferences, Vol 140, p 01009 (2017)
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 function representing in an effective way the interactions between objects (cement hydrates
Externí odkaz:
https://doaj.org/article/e58e16c545c84087ba58922ebd97ea4f
Publikováno v:
EPJ Web of Conferences, Vol 140, p 15027 (2017)
Mechanical behavior of concrete crucially depends on cement hydrates, the “glue” of cement. The design of high performance and more environmentally friendly cements demands a deeper understanding of the formation of the multiscale structure of ce
Externí odkaz:
https://doaj.org/article/2abf9393131a41c5823820c185683448
Autor:
Dragulet, Francis, Goyal, Abhay, Ioannidou, Katerina, Pellenq, Roland J. -M., Del Gado, Emanuela
Publikováno v:
J. Phys. Chem. B 2022, 126, 26, 4977-4989
Ion specificity and related Hofmeister effects, ubiquitous in aqueous systems, can have spectacular consequences in hydrated clays, where ion-specific nanoscale surface forces can determine large scale cohesive, swelling and shrinkage behaviors of so
Externí odkaz:
http://arxiv.org/abs/2204.01631
Autor:
Sonzogni, Max, Vanson, Jean-Mathieu, Reynier, Yvan, Martinet, Sébastien, Ioannidou, Katerina, Radjai, Farhang
Publikováno v:
In Powder Technology 1 June 2024 442
Autor:
Goyal, Abhay, Palaia, Ivan, Ioannidou, Katerina, Ulm, Franz-Josef, Van Damme, Henri, Pellenq, Roland J. -M., Trizac, Emmanuel, Del Gado, Emanuela
Publikováno v:
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 agent in concrete, to which it provides a cohesive strength that rapidly increases during setting. Understanding how such co
Externí odkaz:
http://arxiv.org/abs/2108.03145
Autor:
Monfared, Siavash, Zhou, Tingtao, Andrade, Jose E., Ioannidou, Katerina, Radjai, Farhang, Ulm, Franz-Josef, Pellenq, Roland J. -M.
Publikováno v:
Phys. Rev. Lett. 125, 255501 (2020)
Utilizing 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 disorder and their inverse porous structures obtained by interchanging particles and por
Externí odkaz:
http://arxiv.org/abs/2008.04201
Autor:
Zhou, Tingtao, Ioannidou, Katerina, Ulm, Franz-Josef, Bazant, Martin Z., Pellenq, Roland J. M.
Publikováno v:
Proceedings of the National Academy of Sciences May 2019, 201901160
Capillary effects such as imbibition-drying cycles impact the mechanics of granular systems over time. A multiscale poromechanics framework was applied to cement paste, that is the most common building material, experiencing broad humidity variations
Externí odkaz:
http://arxiv.org/abs/1905.11206
Autor:
Zhou, Tingtao, Ioannidou, Katerina, Masoero, Enrico, Mirzadeh, Mohammad, Pellenq, Roland J. -M., Bazant, Martin Z.
We propose a theoretical framework to calculate capillary stresses in complex mesoporous materials, such as moist sand, nanoporous hydrates, and drying colloidal films. Molecular simulations are mapped onto a phase-field model of the liquid-vapor mix
Externí odkaz:
http://arxiv.org/abs/1803.05879
Publikováno v:
In Cement and Concrete Research September 2022 159