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  • The influence of different fibres quantity on mechanical and microstructural properties of alkali-activated foams [Elektronski vir]
    Traven, Katja, kemičarka ...
    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.
    Source: 3rd International Conference on Technologies & Business Models for Circular Economy, [15th December 2020] [Elektronski vir] : conference proceedings (Str. 114-126)
    Type of material - conference contribution ; adult, serious
    Publish date - 2022
    Language - english
    COBISS.SI-ID - 111157763

    Link(s):

    https://press.um.si/index.php/ump/catalog/view/677/916/2289-1
    DiRROS - Digital repository of Slovenian research organizations
    DOI

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