Podrobnosti záznamu

Název
    Research of the Processes of High Temperature Influence on Cementitous Concrete
Autor
    Bodnárová, L.
    Foldyna, Josef
    Sitek, Libor
    Válek, J.
Jazyk
    anglicky
Typ dokumentu
    článek v odborném periodiku
Zdrojový dokument - seriál
    Advanced Science Letters
Svazek/č.
    Roč. 19, č. 2
Strany
    s. 500-503
Rok
    2013
Poznámky
    Autoři celkem: 4
    Projekt: GAP104/12/1988, GA ČR3cav_un_auth*0290666
    Projekt: TA01010948, GA TA ČR, CZ3cav_un_auth*0301545
    Rozsah: 4 s. : E
Předmětová kategorie
    cementitous concrete
    high temperature influence
    physicalmechanical properties
Klíčové slovo
    Cementitous
    Concrete
    High
    Influence
    Processes
    Research
    Temperature
Abstrakt (anglicky)
   The paper focuses on analysis of behaviour of cement composite materials (concrete) exposed to high temperatures. Experimental work was focused on designing and verification of mix-design with higher resistance to action of high temperature. Concrete specimens were exposed to thermal load at the temperatures 200 °C, 400 °C, 600 °C and 900 °C with isothermal dwell 60 minutes. After exposition to high temperature, physicalmechanical properties were tested and compared to reference specimens, which were not exposed to high temperature. Surface of testing specimens was analyzed and percent damage of surface was defined. Concrete mix-designs with components aimed at increasing fire resistance showed the least drop of compressive strength. Concrete with quartz sand and greywacke aggregate with no components enhancing fire resistance showed the most significant changes of compressive strength and appearance.
   Combination of fibers and basalt aggregate had positive effect compared to using only basalt aggregate.
Přispěvatel
    AV ČR Brno, Ústav geoniky
Kód přispěvatele
    AV ČR, ÚG
Zdrojový formát
    U
Datum importu
    24. 10. 2014