Article Dans Une Revue Materials Science and Engineering: A Année : 2006

Water effect on internal friction of set plaster

Résumé

Set plaster is brittle when it is dry and becomes plastic with a drastic drop of mechanical properties in the presence of water. In this work, mechanical spectroscopy has been used to investigate this water effect. Internal friction was measured as a function of strain amplitude at different humidity conditions. A weak dependence is observed at low strain amplitude, followed by a steep linear rising above a threshold strain amplitude. Increasing the relative humidity increases the internal friction and lowers the threshold of the rising part. The results provide an experimental evidence of a relative sliding of gypsum crystals enhanced in the presence of water. A simple viscoelastoplastic rheological model is proposed to describe this effect.

Domaines

Fichier principal
Vignette du fichier
Reynaud2006.pdf (332.27 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-00436174 , version 1 (17-01-2022)

Licence

Identifiants

Citer

Pascal Reynaud, Malika Saadaoui, Sylvain Meille, Gilbert Fantozzi. Water effect on internal friction of set plaster. Materials Science and Engineering: A, 2006, pp.500-503. ⟨10.1016/j.msea.2006.01.152⟩. ⟨hal-00436174⟩
83 Consultations
119 Téléchargements

Altmetric

Partager

  • More