ORGANISATION/COMPANYUniversité de Pau et des Pays de l&#039;Adour
RESEARCH FIELDEngineering › Civil engineeringEngineering › Materials engineering
RESEARCHER PROFILERecognised Researcher (R2)Established Researcher (R3)
APPLICATION DEADLINE11/11/2018 12:00 - Europe/London
LOCATIONFrance › Anglet
TYPE OF CONTRACTTemporary
HOURS PER WEEK35
OFFER STARTING DATE01/01/2019
REFERENCE NUMBERMACENA II
- Scientific Context
The proposed work will be done within the context of the extension of the French program MACENA whose purpose was to impulse significant progress in the modeling and numerical simulation of the safety of nuclear vessels under a potential accident. The MACENA program allows the community to better understand the effects of temperature and relative humidity on the instantaneous and delayed behavior of concrete –, to make significant progress in the computation of the permeability to gas or water of concrete, even when cracked –. Unfortunately, this program wasn’t able to extend the problems of permeability to vapor. MACENA program is prolonged to MACENA-2 in the purpose of extending the knowledge of phenomena acting during an air vapor mixing through cracked concrete.
The MACENA-2 project puts in synergy 4 teams:
- EDF research is in charge of the numerical modelling in relation with the other teams. EDF will improve an existing finite element code during this project.
- University of Bordeaux whose purpose is to observe the phase changing during the flow at a small scale using a transparent porous.
- University of Pau & Pays Adour is will perform some experiment at the decimetric scale on perfect planes and real cracks on concrete at high temperature.
- University of Grenoble will do some neutron radiography of flow experiment through cracked concrete
The objectives of the proposed work are :
- To perform scientific experiments of air-vapor flow through cracked concrete.
- To understand the coupling between thermal exchanges, phase changes and flow in this context
- To establish pertinent elements, parameters in order to model the observed phenomena and to do numerical simulations.
- To publish the results
III. Plan de travail / Work plan
An experimental setup with radial flux will be designed, the complexity of the crack walls will progress from a perfect plane to a real crack. The concrete parts will be heated at different temperatures in order to change the condensation conditions and study their effects. The flow will be measured at the input of the setup and the liquid flow will be collected and measured at the output.
IV. Literature References
 H. Kallel, H. Carré, C. La Borderie, B. Masson, et N. C. Tran, « Effects of the Hygrothermal Conditions on the Fracture Energy of the Concrete », in Key Engineering Materials, Milano, Italy, 2016, vol. 711, p. 397‑403.
 H. Kallel, H. Carré, C. La Borderie, B. Masson, et N. C. Tran, « Effect of temperature and moisture on the instantaneous behaviour of concrete », Cem. Concr. Compos., vol. 80, p. 326‑332, juill. 2017.
 H. Kallel, H. Carré, C. Laborderie, B. Masson, et N. Cuong Tran, « Evolution of mechanical properties of concrete with temperature and humidity at high temperatures », Cem. Concr. Compos., vol. 91, p. 59‑66, août 2018.
 F. Barre et al., Control of Cracking in Reinforced Concrete Structures: Research Project CEOS.fr. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016.
 M. Matallah et C. La Borderie, « 3D Numerical Modeling of the Crack-Permeability Interaction in Fractured Concrete », in Framcos’9, Berkeley, California, USA, 2016.
 G. Rastiello, C. Boulay, S. Dal Pont, J. L. Tailhan, et P. Rossi, « Real-time water permeability evolution of a localized crack in concrete under loading », Cem. Concr. Res., vol. 56, p. 20‑28, févr. 2014.
 G. Rastiello, S. Leclaire, R. Belarbi, et R. Bennacer, « Unstable two-phase flow rate in micro-channels and cracks under imposed pressure difference », Int. J. Multiph. Flow, vol. 77, p. 131‑141, déc. 2015.
 D. E.-M. Bouhjiti et al., « New continuous strain-based description of concrete’s damage-permeability coupling », Int. J. Numer. Anal. Methods Geomech., vol. 42, no 14, p. 1671‑1697, oct. 2018.
Selection process steps:
- Establishment of the selection committee.
- evaluation of the applicants cv’s
- Interview with the selected candidates and ranking.
SIAME laboratory has developed skills in the domain of civil engineering and coastal engineering, it is associated to the ISA BTP Engineering school within the Sciences and Technologies for Energy and Environment College of the University of Pau & Pays Adour. University of Pau and Pays Adour was recently elected at the French Excellency project I-SITE that ranks it towards the 18 French universities of Mondial vocation.
The Civil Engineering team is involved in projects relative to safety of structures and contracts with major companies in the domain of energy.
Required Research Experiences
RESEARCH FIELDEngineering › Civil engineering
YEARS OF RESEARCH EXPERIENCE1 - 4
RESEARCH FIELDEngineering › Materials engineering
YEARS OF RESEARCH EXPERIENCE1 - 4
REQUIRED EDUCATION LEVELEngineering: PhD or equivalentPhysics: PhD or equivalent
REQUIRED LANGUAGESENGLISH: ExcellentFRENCH: Basic
Criteria used in selection of the candidate:
- The candidate's motivation, scientific maturity and curiosity.
- Candidate's knowledge in the desired skills.
- English proficiency
- Knowledge of French isn’t mandatory but is appreciated
EURAXESS offer ID: 348224
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