Analysis of alkali-activated mineral wool-slag bindersAdesanya, Elijah (Avtor) Dabbebi, Rawia (Avtor) Rößler, Christine (Avtor) Pavlin, Majda (Avtor) Li, Zhenming (Avtor) Luukkonen, Tero (Avtor) Yliniemi, Juho (Avtor) Illikainen, Mirja (Avtor) recyclingalkali activated materialmineral woolTwo synthesis pathways (one- and two-part) in alkali-activated binders were compared using ground granulated blast furnace slag (GGBFS), mineral wool (MW) activated using dry and liquid alkali activators with similar Na2O/SiO2 modulus. The effect of activator type on reaction kinetics, strength development, setting times, and durability shows that one-part synthesis does not only improve early strength, but also provide better durability properties. While the highest compressive strength (56 MPa, 90 days) was achieved for the one-part mix (DM), the reaction products (presence of Mg–Al layered double hydroxide and C–S–H-like phases) observed for both mortar mixes were similar. The DM mortars showed better resistance to sulfate attack than two-part mix (WM) mortars and sets faster. The results highlight the significance of the one-part pathways in the synthesis of alkali-activated materials.Springer20242024-03-11 07:23:08Neznano18379UDK: 54ISSN pri članku: 1438-4957DOI: 10.1007/s10163-023-01878-3COBISS_ID: 182875651sl© The Author(s) 2024