M/F Post-doctoral position - Study of the early-age behavior of earth masonry structures
Grenoble, Isère
CDD
Temps-plein
Il y a 16 jours
Offer DescriptionIn the framework of the post-doctoral position, the drying process of masonry structures will be analysed at the scale of the block/mortar interface taking into account the type of block and the vertical stress applied to the assembly during the drying.The main objectives are to better understand the phenomenology, depending on confining pressure and intrinsic permeability, and to furnish a case study to validate a numerical model Dalpont, 2007 using materials properties already available in the literature Anglade, 2022 et Laou, 2021. Indeed, to avoid a time consuming identification process, the same materials than in Anglade, 2022 et Laou, 2021 will be used for this post-doc project. To achieve these objectives, a multiscale approach will be used. At the macroscopic scale, controlled THM drying test will be performed in a climatic chamber. Image analysis \cite{naillon2019,sarkis2023} will be used to track the moisture cloud during the early-age drying phase. To assess the influence of the intrinsic permeability of the block and of the confining force different configurations will be setup under constant and controlled relative humidity and temperature. The water content will be tracked by dedicated embedded sensors. The knowledge of the material already studied in literature, will allow to deduce the suction from this measurements. Filter paper will also be used to validate this approach from the ''mortar alone" configuration. Finally triplets will be tested to obtain their shear strength. At the mesoscale, the study will consist in the analysis of the migration of the moisture clog, at the early-age block-mortar-block assembly, from neutron/X-Ray tomography using the experimental platform NeXT (Tengattini, 2020). The equipment whose feasibility has already been assessed in Moreira, 2022 will be employed. This test will give a measurement of the moisture content spreading in the granular stacking that constitute the mortar joint. It will also allow analysing shrinkage and cracks development, and assess the phenomenology involved at the interface brick-mortar. The experimental results will serve as a benchmark for a THM numerical model based on Dalpont, 2007.3SR laboratory and ILL, experimental workRequirementsResearch Field Engineering Education Level PhD or equivalentResearch Field Physics Education Level PhD or equivalentLanguages FRENCH Level BasicResearch Field Engineering » Materials engineering Years of Research Experience 1 - 4Research Field Physics » Acoustics Years of Research Experience 1 - 4Additional InformationEligibility criteriaExperience in the mechanical characterization of masonry, raw earth materials, and/or imaging (X-ray, neutron, DIC) would be appreciated.Additional commentsThe application file must include cover letter, CV, grade transcripts. Contact . Website for additional job detailsWork Location(s)Number of offers available 1 Company/Institute Sols, solides, structures, risques Country France City GRENOBLE GeofieldWhere to apply WebsiteContact CityGRENOBLE WebsiteSTATUS: EXPIRED