A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A study on the setting characteristics of sodium silicate-activated slag pastes
In this paper, we investigate which factor for a sodium silicate-based activator influences the setting time of alkali-activated slag (AAS) paste. Several factors, such as the pH value of the activator, the alkali modulus (AM) and the alkali activator dosage, were evaluated when the liquid/slag ratio was kept constant. It was found that the pH value and the AM have a strong relationship, however, they have no distinct relationship with the setting time. The activator dosage, which is defined as the sum of the SiO2 and Na2O concentrations, shows a significant trend with the setting time. It was also found that the influence of SiO2 on the setting time is more apparent than that of Na2O. Increasing amounts of SiO2 decrease the pH value of the activator and increasing amounts of Na2O increase the pH value of the activator. Phosphoric acid, used as a retarder, was found to have a strong retarding effect.
A study on the setting characteristics of sodium silicate-activated slag pastes
In this paper, we investigate which factor for a sodium silicate-based activator influences the setting time of alkali-activated slag (AAS) paste. Several factors, such as the pH value of the activator, the alkali modulus (AM) and the alkali activator dosage, were evaluated when the liquid/slag ratio was kept constant. It was found that the pH value and the AM have a strong relationship, however, they have no distinct relationship with the setting time. The activator dosage, which is defined as the sum of the SiO2 and Na2O concentrations, shows a significant trend with the setting time. It was also found that the influence of SiO2 on the setting time is more apparent than that of Na2O. Increasing amounts of SiO2 decrease the pH value of the activator and increasing amounts of Na2O increase the pH value of the activator. Phosphoric acid, used as a retarder, was found to have a strong retarding effect.
A study on the setting characteristics of sodium silicate-activated slag pastes
Chang, J.J. (author)
Cement and Concrete Research ; 33 ; 1005-1011
2003
7 Seiten, 29 Quellen
Article (Journal)
English
A study on the setting characteristics of sodium silicate-activated slag pastes
| British Library Online Contents | 2003
A study on the setting characteristics of sodium silicate-activated slag pastes
| Online Contents | 2003