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    Wyświetlanie 1-5 z 5
    Tytuł:
    Prediction of the reinforced concrete structure durability under the risk of carbonation and chloride aggression
    Autorzy:
    Czarnecki, L.
    Woyciechowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/201976.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    concrete durability
    chloride aggression
    carbonation
    durability prognosis
    Opis:
    The paper presents an idea of predicting durability of concrete structures with steel reinforcement under conditions of chloride and carbonation corrosion risk. Mechanisms of destruction due to steel corrosion in such conditions are shown. The recently elaborated model of carbonation and general model of chloride diffusion have been discussed. An algorithm of the rest service life time prognosis has been shown and options of its main stages realization have been done. An example of durability prognosis for pre-stressed hollow-core floor slab with upper layer of concrete and epoxy-resin coating has been given. This example confirms the usefulness of the described prognosis method and demonstrates its helpfulness in a structure management according to the standards of EN 1504 series.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 1; 173-181
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental verification of carbonation models used for estimation of reinforced concrete structures durability
    Autorzy:
    Stańczak, D.
    Kuziak, J.
    Woyciechowski, P.
    Czarnecki, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/201118.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    concrete
    reinforced concrete
    concrete carbonation
    modelling
    self-terminating carbonation model
    durability
    cover thickness
    Opis:
    The subject of the article is a comparison of two types of concrete carbonation models: self-limited carbonation and infinite carbonation. The results of the research on the progress of carbonation during six years of sample exposure in natural atmospheric conditions were used to determine the detailed models for a set of concretes with different w/c and different types of cement, and two scenarios of initial curing. It has been established that the model of self-limiting carbonation (i.e. hyperbolic) is more adequate for describing laboratory tests results in natural conditions.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 5; 1159-1166
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Praktyczne reguły napraw konstrukcji z betonu. Cz.1
    Rules of thumb for concrete construction repair
    Autorzy:
    Czarnecki, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/128755.pdf
    Data publikacji:
    2018
    Wydawca:
    PWB MEDIA Zdziebłowski
    Tematy:
    konstrukcja betonowa
    naprawa
    metoda naprawy
    ochrona
    trwałość
    utrzymanie
    concrete structure
    repair
    repair method
    protection
    durability
    maintenance
    Opis:
    The necessity and even inevitability of the building repairing has been shown. The repair as a sustainability development has been emphasised. In building activity – in “on site” practice – a lot of rules of thumb are used. Those rules often seems to be far away from a scientific statement, however, they are a consequence of scientific consideration. In this context, the standard PN-EN 1504 could be treated as the set of rules for repair of concrete constructions. However, the standard is in many cases not easy, complicated and seems to be unfriendly to the readers. On this premise, a commentary to the standard has been developed: “Naprawa i ochrona konstrukcji z betonu. Komentarz do PN-EN 1504”, PWN, 2017, by L. Czarnecki, P. Łukowski, A. Garbacz. This paper attempts to formulate rules of thumb for repairs of concrete building constructions. The rules have been briefly presented on the backdrop of science-engineering relation and illustrated with relevant pictures.
    Źródło:
    Builder; 2018, 22, 6; 50-52
    1896-0642
    Pojawia się w:
    Builder
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Praktyczne reguły napraw konstrukcji z betonu. Cz.2
    Rules of thumb for concrete construction repair
    Autorzy:
    Czarnecki, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/128657.pdf
    Data publikacji:
    2018
    Wydawca:
    PWB MEDIA Zdziebłowski
    Tematy:
    konstrukcja betonowa
    naprawa
    ochrona
    zasada praktyczna
    trwałość
    rozwój zrównoważony
    nauka
    inżynieria
    concrete construction
    repair
    protection
    rule of thumb
    durability
    sustainable development
    science
    engineering
    Opis:
    The necessity and even inevitability of the building repairing has been shown. The repair as a sustainability development has been emphasised. In building activity – in “on site” practice – a lot of rules of thumb are used. Those rules often seems to be far away from a scientific statement, however, they are a consequence of scientific consideration. In this context, the standard PN-EN 1504 could be treated as the set of rules for repair of concrete constructions. However, the standard is in many cases not easy, complicated and seems to be unfriendly to the readers. On this premise, a commentary to the standard has been developed: “Naprawa i ochrona konstrukcji z betonu. Komentarz do PN-EN 1504”; PWN, 2017, by L. Czarnecki, P. Łukowski, A. Garbacz. This paper attempts to formulate rules of thumb for repairs of concrete building constructions. The rules have been briefly presented on the backdrop of science-engineering relation and illustrated with relevant pictures.
    Źródło:
    Builder; 2018, 22, 10; 58-60
    1896-0642
    Pojawia się w:
    Builder
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Scientific basis and rules of thumb in civil engineering: conflict or harmony?
    Autorzy:
    Czarnecki, L.
    Gemert, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/200291.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    building performance
    appraiser
    matrix of the science of construction
    rule of thumb
    durability
    complexity
    diversified development
    wydajność budowy
    rzeczoznawca
    zasada praktyczna
    trwałość
    złożoność
    rozwój zróżnicowany
    Opis:
    Science and engineering intermingle in the area of construction. Engineering works, often of great dimensions and design life cycle of many decades, have to be designed on a scientific basis since the safety of hundreds of users depends on their design. The task of scientific institutions is to define the construction performance within categories that correspond to the contemporary level of knowledge and technology. A construction appraiser who speaks out in a way that ensures unquestionable competence about the performance of elements and buildings (existing and under construction), should be convinced of the scientific basis of his opinions. A comparison of construction sections vs. basic requirements presents an archetype of the science of construction. A matrix of the science of construction reveals its multi-faceted nature; if related to time – the issue of durability has to be considered, and if related to the scale – the complexity. Defining the construction performance in terms of technical features is a constant search for a relationship between the material model and the usability model of a building. The construction industry uses a lot of “rules of thumb”, more than any other sector of technology. In the era of computer-aided design, CAD, and building information modelling (BIM), those rules of thumb remain invaluable verification tools.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 4; 665--673
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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