Impact of relative humidity variations on Carrara marble mechanical properties investigated by nonlinear resonant ultrasound spectroscopy
Type de document : Archive ouverte
| ISSN: 0950-0618
Auteur(s) : Chavazas, Marie-Laure | Bromblet, Philippe | Berthonneau, Jérémie | Hénin, Jérémy | Payan, Cédric
Edité par CCSD ; Elsevier
- Type de document
- info:eu-repo/semantics/article ; Journal articles
- Langue
- en
- Date de publication
- 2024-06-14
- Résumé
- International audience.
Like many other stones, marble mechanical properties can be significantly changed in presence of water. Water most often induces a weakening which can lead to marble degradation when coupled to temperature variations. Yet, marble artefacts are more frequently subjected to relative humidity (RH) variations than episodes of water imbibition and/or drastic temperature variations. Thus, one could wonder how do variations of RH alone impact marble mechanical state. In this study, Carrara Gioia marble samples are subjected to adsorption-desorption cycles. They were previously thermally-damaged between 40 and 105 °C, and their microstructure was characterized for each heating temperature. The evolution of their mechanical properties is monitored non-destructively with two parameters measured by Nonlinear Resonant Ultrasound Spectroscopy. The resonant frequency decreases weakly with increasing RH, indicating a diminution in sample stiffness due to low moisture-induced softening. The nonlinear parameter increases strongly, probably due to higher capillary pressure associated to a capillary condensation increase with RH. However, these phenomena are reversible: during adsorption-desorption cycling both parameters remain quite constant for a given RH. Therefore, while a RH increase impacts the mechanical properties of Carrara marble, adsorption-desorption cycling shows a reversible behavior which does not induce any permanent change in mechanical properties.
- Citer la référence
- Chavazas, Marie-Laure , Bromblet, Philippe , Berthonneau, Jérémie , Hénin, Jérémy , Payan, Cédric, Impact of relative humidity variations on Carrara marble mechanical properties investigated by nonlinear resonant ultrasound spectroscopy, CCSD,
