A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Chloride binding of alkali-activated slag/fly ash cements
https://orcid.org/0000-0001-7145-0883
Highlights The influence factors on chloride binding of AACs are studied. The Langmuir isotherm suits better for chloride adsorption of most of AACs. The chloride binding is predominantly affected by the chloride concentration. The Friedel’s salt only presents in AAS samples after adsorption equilibrium. The bound chloride of AACs increases with the increased w/b ratio.
Abstract In this study, the effects of slag/fly ash ratio, Na2O concentration, silicate modulus of activators and water/binder ratio on chloride binding of alkali-activated slag/fly ash cements (AACs) are studied, using the binding isotherms. The Langmuir isotherm suits better for chloride adsorption of most of AACs, and the amount of bound chloride is predominantly influenced by the chloride concentration. The Friedel’s salt only presents in alkali-activated slag samples after adsorption equilibrium. An appropriate slag/fly ash ratio could improve the chloride binding capacity due to the physical adsorption of N-A-S-H. The chloride binding of AACs decreases with the increased Na2O concentration but increases with the increased water/binder ratio, which is believed to be related to the OH− concentration in pore solutions.
Chloride binding of alkali-activated slag/fly ash cements
https://orcid.org/0000-0001-7145-0883
Highlights The influence factors on chloride binding of AACs are studied. The Langmuir isotherm suits better for chloride adsorption of most of AACs. The chloride binding is predominantly affected by the chloride concentration. The Friedel’s salt only presents in AAS samples after adsorption equilibrium. The bound chloride of AACs increases with the increased w/b ratio.
Abstract In this study, the effects of slag/fly ash ratio, Na2O concentration, silicate modulus of activators and water/binder ratio on chloride binding of alkali-activated slag/fly ash cements (AACs) are studied, using the binding isotherms. The Langmuir isotherm suits better for chloride adsorption of most of AACs, and the amount of bound chloride is predominantly influenced by the chloride concentration. The Friedel’s salt only presents in alkali-activated slag samples after adsorption equilibrium. An appropriate slag/fly ash ratio could improve the chloride binding capacity due to the physical adsorption of N-A-S-H. The chloride binding of AACs decreases with the increased Na2O concentration but increases with the increased water/binder ratio, which is believed to be related to the OH− concentration in pore solutions.
Chloride binding of alkali-activated slag/fly ash cements
https://orcid.org/0000-0001-7145-0883
Highlights The influence factors on chloride binding of AACs are studied. The Langmuir isotherm suits better for chloride adsorption of most of AACs. The chloride binding is predominantly affected by the chloride concentration. The Friedel’s salt only presents in AAS samples after adsorption equilibrium. The bound chloride of AACs increases with the increased w/b ratio.
Abstract In this study, the effects of slag/fly ash ratio, Na2O concentration, silicate modulus of activators and water/binder ratio on chloride binding of alkali-activated slag/fly ash cements (AACs) are studied, using the binding isotherms. The Langmuir isotherm suits better for chloride adsorption of most of AACs, and the amount of bound chloride is predominantly influenced by the chloride concentration. The Friedel’s salt only presents in alkali-activated slag samples after adsorption equilibrium. An appropriate slag/fly ash ratio could improve the chloride binding capacity due to the physical adsorption of N-A-S-H. The chloride binding of AACs decreases with the increased Na2O concentration but increases with the increased water/binder ratio, which is believed to be related to the OH− concentration in pore solutions.
Chloride binding of alkali-activated slag/fly ash cements
Zhang, Jian (author) / Shi, Caijun (author) / Zhang, Zuhua (author)
Construction and Building Materials ; 226 ; 21-31
2019-07-23
11 pages
Article (Journal)
Electronic Resource
English
Dry powder alkali-activated slag cements
| Online Contents | 2015
Durability of Alkali-activated Slag Cements
| British Library Conference Proceedings | 1997
Alkali-activated fly ash-slag cements
| Online Contents | 2000
Alkali-Activated Slag Cements: Kinetic Studies
| Online Contents | 1997
Alkali-activated fly ash/slag cements
| British Library Online Contents | 2000