20.500.12556/DiRROS-23007 Circularity and longevity of alkali-activated materials case-study using rock wool as a precursor Alkali-activated materials (AAMs) are being envisaged as a future alternative to cements because AAMs (i) can be made solely from locally available secondary raw materials and (ii) because of their low energy consumption during synthesis. However, products that cannot be reused should never enter the market. Therefore, the circular economy viability of AAMs was studied by reusing (alkali-activated) pulverised rock wool in alkali activation synthesis until the theoretically determined limit leading to the efflorescence would be reached. While 25% of the maximal allowed liquid alkali did not offer significant mechanical performance, 50, 75 and 100% of allowed alkali ended up with 15, 20 and 20 MPa, respectively, which is only 5 MPa lower than AAM made with the same technique (pressing) in a one-step approach. Therefore, if the initial AAM does not reach the efflorescence limit, it could still be used as a precursor before it becomes waste. kamena volna alkalijsko aktivirani materiali mikrovalovno obsevanje elektromagnetna dehidracija krožni modeli linearni modeli true false true University of Maribor, University Press Angleški jezik Slovenski jezik © 2025 Univerza v Mariboru, Univerzitetna založba Neznano 2025-07-16 07:35:45 2025-07-16 07:48:19 2025-10-24 03:52:56 0000-00-00 00:00:00 2025 0 0 Str. 27-40 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2025-03-03 620.1/.2 228890115 227616771 https://press.um.si/index.php/ump/catalog/book/949/chapter/238 1 b9b1ea18-6206-11f0-9bb7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=33657 RAZ_Horvat_Barbara_2025.pdf RAZ_Horvat_Barbara_2025.pdf 1 896B9BEFE8E341DB7786539937781AD2 e9e07d3ee26e9bdae0dee4dca73019838e1e6bbb07984660456af495526ccd17 5fd592a7-6208-11f0-9bb7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=33658 Zavod za gradbeništvo Slovenije 0 0 0