Browsing Ústav fyziky by Author "Keršner, Zbyněk"

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  • Effect of carbon nanotubes on the mechanical fracture properties of fly ash geopolymer 

    Rovnaník, Pavel; Šimonová, Hana; Topolář, Libor; Schmid, Pavel; Keršner, Zbyněk (Elsevier, 2016-06-01)
    Fly ash geopolymer is amorphous aluminosilicate material which is considered as alternative to Portland cement concrete. One of the limiting factors of its utilization is an increased shrinkage and related deterioration ...

  • Fracture properties of concrete specimens made from alkali activated binders. 

    Šimonová, Hana; Kucharczyková, Barbara; Topolář, Libor; Bílek, Vlastimil; Keršner, Zbyněk (IOP Publishing, 2017-09-15)
    The aim of this paper is to quantify crack initiation and other fracture properties – effective fracture toughness and specific fracture energy – of two types of concrete with an alkali activated binder. The beam specimens ...

  • Fracture response of alkali-activated slag mortars reinforced by carbon fibres 

    Šimonová, Hana; Topolář, Libor; Schmid, Pavel; Keršner, Zbyněk; Rovnaník, Pavel (IOP Publishing, 2018-07-12)
    The paper reports a study of the effect of carbon fibres on the mechanical fracture parameters of alkali-activated slag mortars. The carbon fibres were added in the amount of 1, 2 and 3%, respectively with respect to the ...