| Titre : | The physical and chemical characteristics of the shell of air-entrained bubbles in cement paste (2009) |
| Auteurs : | M. Tyler Ley, Auteur ; Ryan T. Chancey, Auteur ; Maria C.G. Juenger, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Cement and concrete research (Vol. 39 N° 5, Mai 2009) |
| Article en page(s) : | pp. 417–425 |
| Note générale : | Génie Civil |
| Langues : | Anglais |
| Tags : | Freezing and thawing ; Admixture Fresh concrete Air entrainment |
| Résumé : | Recent research has suggested that the shell of an air-entrained void is important for resisting coalescence between air-voids and diffusion of gas from the surrounding fluid. The current paper describes the physical and chemical properties of an air-void shell during the first 2 h of hydration and chemical characteristics at 60 days. Results from this research suggest that the air-void shells found in air-entrained paste have varied physical properties and the crystalline material of these shells is largely made up of fine cement particles during the first 2 h of hydration. Observations of paste at 60 days of hydration suggest that the shell is made up of calcium silicate hydrate (C–S–H) with a morphology different from that in the bulk paste. |
| ISSN : | 0008-8846 |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S0008884609000441 |
