Les argiles Gonflantes – Wannehain, Wannehain. Community. Elimination, par des argiles gonflantes, de l’aflatoxine B1 des milieux contamines . Masimango, N. Remacle, J. Ramaut, J. Access the full text. Cet article porte sur la caractérisation géologique, minéralogique et géotechnique des argiles marneuses gonflantes de la région de Médéa. Dans une première.
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Once the character of the swelling sensed in preliminary recognition phase, an estimate of the amplitude and the pressure of swelling can be established by correlations that tend to link the swelling parameters with geotechnical parameters obtained from identification tests.
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Get fast, free shipping with Amazon Prime. English Choose a language for shopping. Learn more about Amazon Giveaway. Amazon Restaurants Food delivery from local restaurants. East Dane Designer Men’s Fashion. Learn more about Amazon Prime. Read more Read less. Initial download of the metrics may gonclantes a while. The clayey material hard and brittle when dry, presents the particularity of changing its consistence as a function of its water content.
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Les argiles Gonflantes – Wannehain
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The finite size of the water molecules is firstly taken into account by modeling water as a Hard Sphere fluid argi,es the Fundamental Measure Theory. With the objective of an application to civil engineering, the improved expression of the disjoining pressure at the nanoscale is included in a modified form of Terzaghi’s effective stress gonflantfs for unsaturated expansive clays recently developed by our group in order to numerically simulate the hydro-mechanical behavior of expansive clays during water uptake.
Water is no longer considered as a continuous solvent but as a fluid of individual polar molecules in order to recover existing experimental and modeling results such as the presence of discrete water layers in the interplatelet space or the variation of the disjoining pressure gonflantfs the interplatelet distance at low hydration level. Amazon Drive Cloud storage from Amazon. Data correspond to usage on the plateform after Citation Van Duy Tran. The evolution of the clay structure during shrinkage and swelling is followed with the aim of understanding the mechanism of swelling.
The polar nature of the water solvent is then implicitly taken into account through a Lennard-Jones potential averaging gofnlantes different types gonflnates Van der Waals interactions.
Current usage metrics About article metrics Return to article. Share your thoughts with other customers. Amazon Music Stream millions of songs. Would you like to tell us about a lower price? This work aims at improving the nanoscale description ognflantes expansive gonflanres soils using the Density Functional Theory DFT.
Be the first to review this item Would you like to tell us about a lower price? Thursday, January 11, – 6: The prediction of swelling potential of soil is possible with empirical methods that based on identification parameters, such as plasticity and particle size, determined during the reconnaissance campaigns.
Next the polar nature of the solvent is explicitly modelized by considering water as a Dipolar Hard Sphere fluid. These two fluid models are studied in the framework of the Density Functional Perturbation Theory in which correlation effects between the fluid molecules are incorporated.
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Van Duy Tran 1 Details. Discover Prime Book Box for Kids. Amazon Advertising Find, attract, and engage customers. Depending on the particular structure of clay minerals, these modifications of consistence may be accompanied by more or less substantial volume variations, manifested, either, as a sharp increase of volume swelling phenomenon when the water content increases or shrinkage shrinkage phenomenon in period of marked rainfall.
This behavior is essentially linked to some of environmental parameters of these soils, for example: Services Same authors – Google Scholar. Different physical phenomena of increasing complexity are successively considered. These results are compared with those obtained for the oedometric swelling tests.
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Ions are finally added in order to complete the Electrical Double Layer description at the nanoscale. Swelling clay Porous media Electrical double layer Discontinuous solvent Disjoining pressure Interparticle correlations.
Article Abstract PDF 1. Impact de la saturation cationique sur l’agencement microscopiques des argiles gonflantes et