Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

The Effect of the Type of Activator Anion on the Hydration of Ground Granulated Blast Furnace Slag

Version 1 : Received: 9 March 2022 / Approved: 15 March 2022 / Online: 15 March 2022 (11:20:53 CET)

A peer-reviewed article of this Preprint also exists.

Gołek, Ł.P.; Szudek, W.; Malik, M. The Effect of the Type of Activator Anion on the Hydration of Ground Granulated Blast Furnace Slag. Materials 2022, 15, 2835. Gołek, Ł.P.; Szudek, W.; Malik, M. The Effect of the Type of Activator Anion on the Hydration of Ground Granulated Blast Furnace Slag. Materials 2022, 15, 2835.

Journal reference: Materials 2022, 15, 2835
DOI: 10.3390/ma15082835

Abstract

In the study, ground granulated blast furnace slag was activated with a wide variety of sodium salts to compare the effect of their pH and anion size on the hydration progress and compressive strength development of GGBFS pastes. Research was carried out on samples activated with twelve different sodium salts, cured for one year. Changes in their phase composition (XRD), loss on ignition at different temperatures, expansion and microstructure (SEM+EDS) were examined over the entire curing period. Studies have shown that the presence of sodium ions is more important than the pH of the system, as activation took place even in the case of compounds whose solutions are characterized by low pH, such as sodium tartrate or phosphate. The compressive strength of the pastes ranged from approximately 8 to 65 MPa after one year of curing.

Keywords

alkali activation; anions; alkali activated materials; blast furnace slag

Subject

MATERIALS SCIENCE, General Materials Science

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