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    Wyświetlanie 1-2 z 2
    Tytuł:
    Stress-strain state of damaged reinforced concrete bended elements at operational load level
    Autorzy:
    Kopiika, Nadiia
    Vegera, Pavlo
    Vashkevych, Rostyslav
    Blikharskyy, Zinoviy
    Powiązania:
    https://bibliotekanauki.pl/articles/23967534.pdf
    Data publikacji:
    2021
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    korozja
    pręt stalowy
    belki o rzeczywistych wymiarach
    uszkodzone belki
    corrosion
    steel rebar
    real size beams
    damaged beams
    Opis:
    Each structure is exposed to different influences during operation. As a result, there are various defects and damages of these elements that affect their safe operation. The article presents the results of experimental studies of reinforced concrete beams with damages to stretched reinforcement made with and without initial load application. As the damages were accepted one or five Ø5.6 mm holes. In one case, the damage was made until the beam destruction (up to the 8.4 mm opening) Control samples of both series were destroyed due to crushing of the compressed zone of concrete. Samples that were damaged without initial loading collapsed due to rupture of the stretched reinforcement. The same type of failure was identified for damages at the operational load level.
    Źródło:
    Production Engineering Archives; 2021, 27, 4; 242--247
    2353-5156
    2353-7779
    Pojawia się w:
    Production Engineering Archives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Non-uniform corrosion of steel rebar and its influence on reinforced concrete elements` reliability
    Autorzy:
    Blikharskyy, Yaroslav
    Kopiika, Nadiia
    Selejdak, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/1839520.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    corrosion
    steel rebar
    material anisotropy
    mathematical modeling
    korozja
    stalowy pręt zbrojeniowy
    anizotropia materiałowa
    modelowanie matematyczne
    Opis:
    Remarkable place of reinforced concrete structures in construction field has been noted in wide number of recent researches. Subsequently, their degradation due to aggressive environment has become the topical problem nowadays. Therefore, the formulation of reliable technique for corroded element strength decrement is of great importance, and could be achieved only with the use of complex experimental and theoretical analysis. In this article an attempt is made to propose the mathematical approach to corrosive process modelling, taking into consideration the specifics of its development. According to thorough literature review on existing studies, main specifics of the process were indicated for further suppositions and assumptions formulation. Accordingly, the complex theoretical investigation with corresponding mathematical computations was conducted and results of analytical modelling were discussed. As the initial data for analytical modelling results of previously conducted experiments were used. Analysis of the obtained results shows rather high correspondence with the real conditions of structural element exploitation, taking into consideration material anisotropy and complexity of the corroded zone spread along the rebar cross-section. Proposed methodology for limit force decrease evaluation in general demonstrates reliable results and could be used for further evaluation of corrosion impacts on reinforced concrete elements bearing capacity.
    Źródło:
    Production Engineering Archives; 2020, 26, 2; 67-72
    2353-5156
    2353-7779
    Pojawia się w:
    Production Engineering Archives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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