The interpretation of the expansive behavior of calcium sulfoaluminate belite cements given by Chen et al. (2012) [1] is discussed with reference to the influence of C4A3S content, gypsum addition and water/cement ratio. In particular, the role assigned by the authors to the porosity of hydrated cement is criticized with the support of literature data and still unpublished experimental results. It is concluded that the explanation of the expansive phenomena associated with ettringite formation has to be traced back to the common basis of the major schools of thought about the origin of expansion: the “crystal growth” and “swelling” theories.

Discussion of the paper “Understanding expansion in calcium sulfoaluminate–belite cements” by I.A. Chen et al., Cem. Concr. Res. 42 (2012) 51-60

VALENTI, Gian Lorenzo;MARROCCOLI, Milena;PACE, MARIA LUCIA;TELESCA, ANTONIO
2012

Abstract

The interpretation of the expansive behavior of calcium sulfoaluminate belite cements given by Chen et al. (2012) [1] is discussed with reference to the influence of C4A3S content, gypsum addition and water/cement ratio. In particular, the role assigned by the authors to the porosity of hydrated cement is criticized with the support of literature data and still unpublished experimental results. It is concluded that the explanation of the expansive phenomena associated with ettringite formation has to be traced back to the common basis of the major schools of thought about the origin of expansion: the “crystal growth” and “swelling” theories.
File in questo prodotto:
File Dimensione Formato  
Reply CCR def.pdf

non disponibili

Tipologia: Documento in Post-print
Licenza: DRM non definito
Dimensione 413.46 kB
Formato Adobe PDF
413.46 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11563/35807
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 33
  • ???jsp.display-item.citation.isi??? 23
social impact