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Effect of high temperatures on cement composite materials in concrete structures

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    0394584 - ÚGN 2014 RIV CZ eng J - Journal Article
    Bodnárová, L. - Válek, J. - Sitek, Libor - Foldyna, Josef
    Effect of high temperatures on cement composite materials in concrete structures.
    Acta geodynamica et geomaterialia. Roč. 10, č. 2 (2013), s. 173-180. ISSN 1214-9705. E-ISSN 2336-4351
    R&D Projects: GA MŠk ED2.1.00/03.0082; GA ČR GAP104/12/1988
    Institutional support: RVO:68145535
    Keywords : high temperature * load resistance * concrete * reinforcing of mine works * fiber reinforcement
    Subject RIV: JJ - Other Materials
    Impact factor: 0.667, year: 2013

    Concrete is flexible construction materi al, which is utilized in various technologica l applications for underground structures and reinforcement of mine works (adits, tunnels etc.). In such applications, concrete has ma ny functions – static function, water-tightness, gas-tightne ss, resistance to action of aggressive waters as well as durability. In case of railroad and road tunnel constructions, there is an other important problem: influence of high temp eratures on concrete lining during wildfire. The paper focuses on analysis of behavior of cement composite material (concrete ) exposed to high temperatures. Several possibilities of increasing resistance of cement composites to high temperatures are proposed as well as recommendation fo r reduction of damage on structures exposed to high temperature.
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