29 datasets found

[Departement_IRSTEA]Eaux [TR1_IRSTEA]RIVAGE

International audience

This dissertation was devoted to study gas and water relative permeability and transfer of water in partially saturated cementitious materials. The gas relative...

International audience

The article addresses the structural effects of solutions of lead nitrate on a suspended or compacted bentonite. A permeability increase is observed on compacted clay....

During the preforming phase, the dry reinforcement may be subjected to several deformations: tension, shear, but also compression. If two first déformations have been...

L'emploi de textiles comme additif à des ouvrages en terre est devenu un des procédés majeurs d'amélioration des sols. Ce rmémoire aborde ainsi le thème général de...

[Departement_IRSTEA]Ecotechnologies [TR1_IRSTEA]TED [Axe_IRSTEA]TED-EPURE

The main objective of this study is to evaluate the variable thermal and hydric effect, with fissuration effect on the hydraulic behaviour of two concretes. Many...

During hydrocarbon production, the extraction of fluid induces a decrease of pore pressure called depletion. This depletion causes a change in the stress field that...

The transport of solid particles in saturated porous material, subject to fluid flow occurs in natural environment and specifically in civil engineering. These solids...

A general method to build a pore network model from a 3D image of a porous material ispresented in this work in order to compute its permeability. A skeleton of the...

In the context of geological disposal of radioactive waste, this work contributes to the characterization of the effect of diffuse damage on the water retention and...

The valorization of industrial wastes is nowadays a worldwide challenge that offers several environmental and social interests. In some fields this valorization allows...

The present thesis aims chiefly at the ordered gathering of principIes and norms leading to a satisfactory appraisal of the hydraulic behaviour of undeformable...

The increase of working frequencies in static converters used in power electronic applications requires a more realistic modeling of magnetic componems. The lumped...

International audience

Vacuum insulation panels (VIPs) are composed of an evacuated nanoporous core material, and a barrier envelope to atmospheric gases. Their apparent thermal conductivity...

International audience

Although being a very promising area of concrete technology, computational modeling of fresh concrete flow is a comprehensive and time consuming task. The complexity...