Impact of an SRA (hexylene glycol) on irreversible drying shrinkage and pore solution properties of cement pastes - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Cement and Concrete Research Année : 2021

Impact of an SRA (hexylene glycol) on irreversible drying shrinkage and pore solution properties of cement pastes

Hafsa Rahoui
  • Fonction : Auteur
Matthieu Vandamme
Jean-Michel Pereira
Martin Mosquet
  • Fonction : Auteur

Résumé

Cementitious materials shrink when exposed to decreasing relative humidities, which may result in cracking. Shrinkage reducing admixtures (SRAs) can be used to reduce this drying shrinkage. Although many studies have shown that SRAs reduce the surface tension of the pore solution, the effects of SRAs on other pore solution properties and their relationship to drying shrinkage have been poorly characterized. In this work, we investigate the impact of an SRA (hexylene glycol) on the drying and re-humidification of a cement paste over an extended relative humidity range. The reduction in the first drying shrinkage by the SRA depends on relative humidity. The SRA also significantly reduces the irreversible drying shrinkage. We concluded that the SRA impacts drying shrinkage by acting on the capillary forces, by acting on the specific range of relative humidity over which those forces occur, and potentially by acting on the surface stresses through pore wall adsorption.
Fichier principal
Vignette du fichier
manuscript_with_authors.pdf (1.39 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03164493 , version 1 (10-03-2021)

Identifiants

Citer

Hafsa Rahoui, Ippei Maruyama, Matthieu Vandamme, Jean-Michel Pereira, Martin Mosquet. Impact of an SRA (hexylene glycol) on irreversible drying shrinkage and pore solution properties of cement pastes. Cement and Concrete Research, 2021, 143, pp.106227. ⟨10.1016/j.cemconres.2020.106227⟩. ⟨hal-03164493⟩
40 Consultations
147 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More