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Alkali activated slag binder: effect of cations from silicate activators

Tänzer, Ricarda / Jin, Yu / Stephan, Dietmar

Abstract Two blast furnace slags were activated by alkali hydroxide and alkali silicate solutions possessing different modulus (0.5, 1 and 2), as well as cations (sodium and potassium). Their properties, including the setting time, heat of hydration, compressive strength as well as porosity and morphology have been investigated on both fresh and hardened pastes. The results showed that the cations of these silicate activators exerted a significant effect on the performance of the alkali activated slag binder, whereby the mechanical strength of the binder was promoted greater by the potassium silicate solution as compared to by the sodium silicate solution.

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Alkali activated slag binder: effect of cations from silicate activators

Tänzer, Ricarda / Jin, Yu / Stephan, Dietmar

Abstract Two blast furnace slags were activated by alkali hydroxide and alkali silicate solutions possessing different modulus (0.5, 1 and 2), as well as cations (sodium and potassium). Their properties, including the setting time, heat of hydration, compressive strength as well as porosity and morphology have been investigated on both fresh and hardened pastes. The results showed that the cations of these silicate activators exerted a significant effect on the performance of the alkali activated slag binder, whereby the mechanical strength of the binder was promoted greater by the potassium silicate solution as compared to by the sodium silicate solution.

Alkali activated slag binder: effect of cations from silicate activators

Tänzer, Ricarda / Jin, Yu / Stephan, Dietmar

Abstract Two blast furnace slags were activated by alkali hydroxide and alkali silicate solutions possessing different modulus (0.5, 1 and 2), as well as cations (sodium and potassium). Their properties, including the setting time, heat of hydration, compressive strength as well as porosity and morphology have been investigated on both fresh and hardened pastes. The results showed that the cations of these silicate activators exerted a significant effect on the performance of the alkali activated slag binder, whereby the mechanical strength of the binder was promoted greater by the potassium silicate solution as compared to by the sodium silicate solution.

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Title:

Alkali activated slag binder: effect of cations from silicate activators

Contributors:

Tänzer, Ricarda (author) / Jin, Yu (author) / Stephan, Dietmar (author)

Published in:

Materials and Structures ; 50 ; 1-9

Publication date:

2016-10-24

Size:

9 pages

ISSN:

1871-6873 , 1359-5997

DOI:

https://doi.org/10.1617/s11527-016-0961-y

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Blast furnace slag , Alkali activation , Sodium/potassium silicate , Water glass Engineering , Structural Mechanics , Materials Science, general , Theoretical and Applied Mechanics , Operating Procedures, Materials Treatment , Civil Engineering , Building Materials

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