COMPRESSIVE STRENGTH OF ALKALI-ACTIVATED MORTARS WITH CONVENTIONAL HYDROXIDE ACTIVATORS AND SUNFLOWER HUSK ASH – COMPARATIVE ANALYSIS

XXIX kongres DIMK i X kongres SIGP sa Međunarodnim simpozijumom o istraživanjima i primeni savremenih dostignuća u građevinarstvu u oblasti materijala i konstrukcija (2025) [pp. 100-107]  

AUTHOR(S) / АУТОР(И): Olivera Bedov , Suzana Draganić , Marijana Serdar , Mirjana Malešev

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DOI: 10.46793/29DIMK.100B

ABSTRACT / САЖЕТАК:

Alkali-activated materials (AAMs) are alternative binders with no cement in their composition. They are synthesized from aluminosilicate-rich precursors and alkaline activators – usually hydroxides and silicates. They significantly contribute to the overall CO2 footprint of AAMs, leading to efforts to replace them with alternative alkali-rich waste materials such as agricultural biomass ashes. The paper presents the comparison of slag-based mortars activated with sunflower husk ash (SHA) – a locally available waste material in the Autonomous Province of Vojvodina, Serbia, and KOH and NaOH. The influence of SHA on the mortars was assessed by comparing the 7- and 28-day compressive strength.

KEYWORDS / КЉУЧНЕ РЕЧИ:

alkali-activated materials, sunflower husk ash, blast furnace slag, agricultural biomass ash, alternative activator, sustainability

ACKNOWLEDGEMENT / ПРОЈЕКАТ:

This research has been supported by the Ministry of Science, Technological Development and Innovation (Contract No. 451-03-137/2025-03/200156) and the Faculty of Technical Sciences, University of Novi Sad through project “Scientific and Artistic Research Work of Researchers in Teaching and Associate Positions at the Faculty of Technical Sciences, University of Novi Sad 2025” (No. 01-50/295).

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