20.500.12556/DiRROS-17304 Particle size manipulation as an influential parameter in the development of mechanical properties in electric arc furnace slag-based AAM Alkali-activated materials (AAM) have gained recognition as a promising alternative to technical ceramic and building materials owing to the lower energy demands for production and the potential to use slag as a precursor. In the present study, five sets of slag-based AAM pastes were prepared with different particle sizes (fractions d < 63, 63 < d < 90, and 90 < d < 125 μm in different mass ratios) under the same curing regime and using a fixed precursor to activator (water) mass ratio. Precursors and the hardened AAM are evaluated using BET, XRD, XRF, SEM, FTIR, reactivity of precursors by leaching, and mercury intrusion porosimetry (MIP). Chemical analysis indicated only marginal differences among the different-sized fractions of input materials, whereas the BET surface area and reactivity among the precursors differed significantly-smaller particles had the largest surface area, and thus, higher reactivity. The mineralogical differences between the precursors and hardened AAM were negligible. The results revealed that compressive strength was significantly influenced by particle size, i.e., a threefold increase in strength when the particle size was halved. Microstructural evaluation using MIP confirmed that the porosity was the lowest in AAM with the smallest particle size. The low porosity and high reactivity of the fine fractions led to the highest compressive strength, confirming that manipulation of particle size can significantly influence the mechanical properties. alkalijsko aktivirani materiali žlindra iz obločne peči mehanska aktivacija mehanske lastnosti poroznost alkali-activated materials (AAM) electric arc furnace steel slag mechanical activation mechanical properties porosity true false true Ceramurgica s.p.a. Angleški jezik Ni določen © 2019 The Authors. Published by Elsevier Ltd. Neznano 2023-11-22 08:05:33 2023-11-22 08:05:34 2023-11-23 03:38:34 0000-00-00 00:00:00 2019 0 0 E-članek objavljen: 1 December 2019; str. 22632-22641 iss. 17 Vol. 45 2019 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2019-07-26 620.1/.2 0272-8842 10.1016/j.ceramint.2019.07.296 2480999 https://www.sciencedirect.com/science/article/pii/S0272884219321212?via%3Dihub 1 263edec3-88fd-11ee-9ccb-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23505 RAZ_Traven_Katja_2019.pdf RAZ_Traven_Katja_2019.pdf 1 FA9526B63E2D57E5FE7D38AAD05C9211 6263078bf95e4a1891c60a5ebf8cba675bf7634d37cddab6efe8b384a830927c b57061fe-88fe-11ee-9ccb-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23506 Zavod za gradbeništvo Slovenije 0 0 0