20.500.12556/DiRROS-18066 The influence of different fibres quantity on mechanical and microstructural properties of alkali-activated foams Alkali activated foams (AAFs) were produced using electric arc furnace steel slag (EAF) and ladle furnace basic slag (LS), obtained from two metallurgical companies in Slovenia. They were activated with a mixture of sodium water glass (Na2SiO3) and solid NaOH and foamed with hydrogen peroxide (H2O2). Pores were stabilized with the addition of Triton as a surfactant. Four types of fibres were added to the studied mixture (polypropylene (PP), polyvinyl-alcohol (PVA), basalt (B), and glass wool (GW)) in five different quantities: 0.5, 1.0, 1.25, 1.5 and 2.0 vol % in order to additionally stabilize the structure and thus improve its mechanical properties. The results of mechanical properties showed, that compressive strength was increased in all 20 specimens, partially due to the increased density as well as to the fibre addition. Flexural strength on the other hand was the most improved in the samples where PP and PVA fibres were added. The samples with the addition of B and GW fibres on the other hand showed only small or no improvement in flexural strength in comparison to the referenced sample. Additionally, the microstructure of used fibres and selected foams was also investigated by the means of SEM analysis. fibers alkali activated foams properties vlakna alkalijsko aktivirane pene lastnosti true false true University of Maribor, University Press, Faculty of Chemistry and Chemical Engineering Angleški jezik Slovenski jezik © Authors & Potrč, Bogataj, Kravanja, Novak Pintarič, 2022 Neznano 2024-01-31 12:32:22 2024-01-31 12:57:18 2024-02-01 03:40:50 0000-00-00 00:00:00 2022 0 0 Nasl. z nasl. zaslona; Opis vira z dne 9. 6. 2022; Str. 114-126 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2022-05-30 620.1/.2 10.18690/um.fkkt.2.2022.9 111157763 109396739 RAZ_Traven_Katja_2022.pdf RAZ_Traven_Katja_2022.pdf 1 069599B83E22B0C3D206195D63637E24 c7a1ee910b1b8f85c9571f8b5ffd537fe18e5e5c8546fd0cce17856c5f5eb18f 2e76ac82-c02e-11ee-b0d4-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=24515 http://dx.doi.org/10.18690/um.fkkt.2.2022.9 0 ff377862-c02d-11ee-b0d4-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=24514 Zavod za gradbeništvo Slovenije 0 0 0