Effect of Na3PO4 on the Hydration Process of Alkali-Activated Blast Furnace Slag.
Materials (Basel)
; 9(5)2016 May 20.
Article
em En
| MEDLINE
| ID: mdl-28773518
ABSTRACT
In recent years, the utilization of different non-traditional cements and composites has been increasing. Alkali-activated cementitious materials, especially those based on the alkali activation of blast furnace slag, have considerable potential for utilization in the building industry. However, alkali-slag cements exhibit very rapid setting times, which are too short in some circumstances, and these materials cannot be used for some applications. Therefore, it is necessary to find a suitable retarding admixture. It was shown that the sodium phosphate additive has a strong effect on the heat evolution during alkali activation and effectively retards the hydration reaction of alkali-activated blast furnace slag. The aim of the work is the suggestion of a reaction mechanism of retardation mainly based on Raman and Xray photoelectron spectroscopy.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Materials (Basel)
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
República Tcheca