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Your search keyword '"Amandine Rojo"' showing total 2 results
Start Over Author "Amandine Rojo" Topic 021001 nanoscience & nanotechnology
2 results on '"Amandine Rojo"'

1. Durability Evaluation of a Geothermal Grout

Author

Christophe Poinclou, Philippe Blanc, Amandine Rojo, Laurent Molez, Christophe Lanos, Pascal Monnot, Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), ANTEA Group, ANTEA, Laboratoire de Génie Civil et Génie Mécanique (LGCGM), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)

Subjects
[SPI.GCIV.CD]Engineering Sciences [physics]/Civil Engineering/Construction durable, Petroleum engineering, Grout, geochemical model, 0211 other engineering and technologies, 02 engineering and technology, engineering.material, 021001 nanoscience & nanotechnology, Durability, [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph], Permeability (earth sciences), Thermal conductivity, freeze thaw cycles, Service life, Thermal, engineering, Environmental science, thermal conductivity, permeability, [SPI.GCIV.MAT]Engineering Sciences [physics]/Civil Engineering/Matériaux composites et construction, [SPI.GCIV.RHEA]Engineering Sciences [physics]/Civil Engineering/Rehabilitation, 0210 nano-technology, Geothermal gradient, geothermal grout, 021101 geological & geomatics engineering
Abstract

International audience; The durability of a geothermal grout used to seal vertical geothermal probe is evaluated. The study integrates an experimental approach and geochem-ical models simulations. The accelerated ageing of the geothermal grout is evaluated in laboratory subjecting the grout to realistic geochemical and thermal ag-gressions to which the grout can be subjected. The parameters related to the thermal conductivity and the permeability are particularly monitored. An experimental setting is developed to reproduce the operating conditions of a geothermic probe under realistic containment conditions. The experimental results are the input of the geochemical degradation models leading to the simulation of long time scale degradation around the probe. Conclusions relating to the service life rise from this study.

Published
2019
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2. Kinetics of internal structure evolution in gypsum board exposed to standard fire

Author

Yannick Mélinge, Amandine Rojo, Olivier Guillou, Laboratoire de Génie Civil et Génie Mécanique (LGCGM), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Institut des Sciences Chimiques de Rennes (ISCR), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes)

Subjects
Gypsum, Materials science, Mechanical Engineering, Kinetics, Mineralogy, 020101 civil engineering, [CHIM.MATE]Chemical Sciences/Material chemistry, 02 engineering and technology, engineering.material, 021001 nanoscience & nanotechnology, Microstructure, 0201 civil engineering, Mechanics of Materials, Passive fire protection, Mass transfer, Latent heat, Heat transfer, engineering, Composite material, 0210 nano-technology, Safety, Risk, Reliability and Quality, Porosity
Abstract

International audience; Gypsum is often used as passive fire protection. Indeed, its latent heat effect reduces heat transfer through the structure. To improve composition and physical properties of such material, it is necessary to model its behaviour. Heat and mass transfer have to be considered in the model. For a better understanding of phenomena occurring during a fire event, it is important to study the porosity. In this study, a porosity measurement protocol is developed. The porosity distribution along the thickness of large board sample subjected to standard fire (ISO 834) on one face is studied. In addition, scale effect is taken into account. Finally, the effect of temperature and microstructure are analysed.

Published
2013
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