Carbonated wollastonite - An effective supplementary cementitious material?
J Microsc
; 286(2): 120-125, 2022 05.
Article
en En
| MEDLINE
| ID: mdl-34664277
ABSTRACT
Carbonated wollastonite clinker (CS) may be suitable as supplementary cementitious material (SCM) for mortar and concrete. The microstructure of unground CS clinker, carbonated CS slurry and a mortar blended with carbonated CS are investigated by scanning electron microscopy. Additionally, a reference mortar with pure Portland cement and one with a cement replacement level of 30 mass-% by carbonated CS are produced to assess its contribution to compressive strength development. The calcium silicates are decalcified during carbonation resulting in CaCO3 and amorphous SiO2 . The latter reacts when used as SCM in mortar influencing the Ca/Si ratio of calcium-silicate-hydrate and contributing to compressive strength development.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Calcio
/
Dióxido de Silicio
Idioma:
En
Revista:
J Microsc
Año:
2022
Tipo del documento:
Article
País de afiliación:
Suiza