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    Wyświetlanie 1-7 z 7
    Tytuł:
    Renovation of large-panel buildings in context of urban renewal
    Remonty budynków wielkopłytowych, jako element rewitalizacji miast
    Autorzy:
    Ligęza, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/396404.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    large-panel building
    precast concrete
    revitalization
    budownictwo wielkopłytowe
    prefabrykaty
    remonty
    rewitalizacja
    Opis:
    The article presents issues connected with renovating multi-storey precast concrete buildings, resulting from the consequences of construction defects occurring over the course of the building process and use of the buildings, as well as design flaws and construction defects when insulating external partitions. Analyses and conclusions which stem from them cover issues of renovation in the light of: damage in the vertical and horizontal joints, damage to the connection of layers in three-layer load-bearing and curtain walls, the effect of the damage on the possibilities of carrying out functional modernization of residential units, the effect of the damage on the effectiveness of thermo-modernization - new problems related to faulty insulation.
    W artykule przedstawiono zagadnienia remontowe w budynkach wielkopłytowych wynikające ze skutków wad budowlanych powstałych w czasie budowy i eksploatacji oraz wad projektowych i wykonawczych przy realizacji docieplenia przegród zewnętrznych. Analizy i wynikające z nich wnioski obejmują zagadnienia remontowe w świetle: uszkodzeń w złączach pionowych i poziomych, uszkodzeń połączenia warstw w ścianach trójwarstwowych nośnych i osłonowych, wpływu uszkodzeń na możliwości modernizacji funkcjonalnej lokali mieszkalnych, wpływu uszkodzeń na skuteczność termomodernizacji - nowe problemy w aspekcie źle wykonanego ocieplenia.
    Źródło:
    Civil and Environmental Engineering Reports; 2015, 17; 83-95
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Harnessing waste fine aggregatefor sustainable production of concrete precast elements
    Wykorzystanie drobnoziarnistego kruszywa odpadowego do zrównoważonej produkcji prefabrykatów betonowych
    Autorzy:
    Katzer, J.
    Kobaka, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1819666.pdf
    Data publikacji:
    2010
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    prefabrykaty betonowe
    kruszywo odpadowe
    kruszywo drobne
    precast concrete
    aggregate waste
    aggregates tiny
    Opis:
    Cement composites (concrete, mortar, plaster, slurry) are most commonly applied construction materials in the world. Focusing to the environmental pollution problem we are bearing in mind the necessity of a balanced engineering process while applying cement composites. A lot of attention is drawn to the production of cement characterized by large energy consumption (about 4GJ per ton) and a significant carbon dioxide footprint (about 1 tonne of CO2 emissions per tonne of cement). The worldwide production of cement accounts for almost 7% of total world CO2 emissions [10]. However, it is very often forgotten that the main component of cement composite is aggregate which covers from 60% to 80% of cement composite volume. Global annual production of concrete, mortar and other cement based composites consumes 20 billion tonne of different aggregate. It means that about 3 tonne of aggregate is used per person per year, which considerably influences natural environment, especially in developing countries.
    Niniejszy artykuł dotyczy kompozytów cementowych wykonanych na bazie kruszyw odpadowych uzyskanych w trakcie procesu hydroklasyfikacji pospółki na Pomorzu Środkowym w północnej Polsce. Na świecie mamy do czynienia z licznymi regionami o małych zasobach naturalnych kruszyw grubych, które są podstawowym surowcem służącym do produkcji betonu zwykłego. W tych regionach zamiast kruszyw grubych występują często duże złoża kruszyw drobnych takich jak piasek i pospółka. Kruszywa drobne mogą być stosowane do produkcji betonu zwykłego o przeciętnych cechach mechanicznych. Produkcja betonu w oparciu o lokalnie dostępne kruszywa drobne jest tania, co zachęca do produkcji takich betonów, zamiast betonów wykonanych w oparciu o kruszywa grube transportowane z odległych kopalń.
    Źródło:
    Rocznik Ochrona Środowiska; 2010, Tom 12; 33-45
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stromatoporoid beds and flat-pebble conglomerates interpreted as tsunami deposits in the Upper Silurian of Podolia, Ukraine
    Autorzy:
    Łuczyński, P.
    Skompski, S.
    Kozłowski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/138749.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Palaeotsunami
    Silurian
    Podolia
    Stromatoporoid beds
    Flat-pebble conglomerates
    sylur
    Podole
    warstwy stromatoporoidowe
    prefabrykaty płaskie
    Opis:
    Tsunami deposits are currently a subject of intensive studies. Tsunamis must have occurred in the geological past in the same frequency as nowadays, yet their identified depositional record is surprisingly scarce. Here we describe a hitherto unrecognized example of probable palaeotsunamites. The Upper Silurian (Pridoli) carbonate succession of Podolia (southwestern Ukraine) contains variously developed event beds forming intercalations within peritidal deposits (shallow water limestones, nodular marls and dolomites). The event beds are represented by stromatoporoid and fine-grained bioclastic limestones, in some places accompanied by flat-pebble conglomerates. The interval with event beds can be traced along the Zbruch River in separate outcrops over a distance of more than 20 km along a transect oblique to the palaeoshoreline. The stromatoporoid beds have erosional bottom surfaces and are composed of overturned and often fragmented massive skeletons. The material has been transported landward from their offshore habitats and deposited in lagoonal settings. The flat-pebble conglomerates are composed of sub-angular micritic clasts that are lithologically identical to the sediments forming the underlying beds. Large-scale landward transport of the biogenic material has to be attributed to phenomena with very high energy levels, such as tropical hurricanes or tsunamis. This paper presents a tsunamigenic interpretation. Morphometric features of redeposited stromatoporoids point to a calm original growth environment at depths well below storm wave base. Tsunami waves are the most probable factor that could cause their redeposition from such a setting. The vastness of the area covered by parabiostromal stromatoporoid beds resembles the distribution of modern tsunami deposits in offshore settings. The stromatoporoid beds with unsorted stromatoporoids of various dimensions evenly distributed throughout the thickness of the beds and with clast-supported textures most probably represent deposition by traction. In some sections, the stromatoporoids are restricted to the lowermost parts of the beds, which pass upwards into bioclastic limestones. In this case, the finer material was deposited from suspension. The coexistence of stromatoporoid beds and flat-pebble conglomerates also allows presenting a tsunami interpretation of the latter. The propagating tsunami waves, led to erosion of partly lithified thin-layered mudstones, their fragmentation into flat clasts and redeposition as flat-pebble conglomerates.
    Źródło:
    Acta Geologica Polonica; 2014, 64, 3; 261-280
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental Tests of the Vector II Slab in Field Conditions, Slab and Strip Model
    Autorzy:
    Zając, Jakub
    Drobiec, Łukasz
    Jasiński, Radosław
    Wieczorek, Mirosław
    Kisiołek, Artur
    Powiązania:
    https://bibliotekanauki.pl/articles/1838083.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    crack pattern
    flexural analysis
    interface
    precast
    slab
    short-term load
    pęknięcia
    zginanie
    prefabrykaty
    płyty
    obciążenie krótkotrwałe
    Opis:
    Vector II slab was tested on a natural scale (a slab with a dimension of 6.30 × 6.30 m) and a strip 6.30 m long and 1.20 m wide. The Vector II slab is built by precast panel 60 cm wide, 4 cm thick and 14-20 cm thick concrete overtopping on the construction site. The main purpose of the slab tests on a natural scale was to observe the "faulting" effect and temporary deflections. During the tests, the displacements in the area of the panel joints in the middle of the slab span were recorded. The maximum difference in displacement between adjacent panels of the slab model was 0.16 mm, and the vertical displacement was 1.9 mm. The strip model had no cracks that could indicate a interface cracks between the precast element and the concrete overlay. After completion of the field tests, the load was left on the slab model to verify long-term effects.
    Źródło:
    Civil and Environmental Engineering Reports; 2021, 31, 1; 54-69
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental Tests of the Vector II Slab in Field Conditions, Slab and Strip Model
    Autorzy:
    Zając, Jakub
    Drobiec, Łukasz
    Jasiński, Radosław
    Wieczorek, Mirosław
    Kisiołek, Artur
    Powiązania:
    https://bibliotekanauki.pl/articles/1838085.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    crack pattern
    flexural analysis
    interface
    precast
    slab
    short-term load
    pęknięcia
    zginanie
    prefabrykaty
    płyty
    obciążenie krótkotrwałe
    Opis:
    Vector II slab was tested on a natural scale (a slab with a dimension of 6.30 × 6.30 m) and a strip 6.30 m long and 1.20 m wide. The Vector II slab is built by precast panel 60 cm wide, 4 cm thick and 14-20 cm thick concrete overtopping on the construction site. The main purpose of the slab tests on a natural scale was to observe the "faulting" effect and temporary deflections. During the tests, the displacements in the area of the panel joints in the middle of the slab span were recorded. The maximum difference in displacement between adjacent panels of the slab model was 0.16 mm, and the vertical displacement was 1.9 mm. The strip model had no cracks that could indicate a interface cracks between the precast element and the concrete overlay. After completion of the field tests, the load was left on the slab model to verify long-term effects.
    Źródło:
    Civil and Environmental Engineering Reports; 2021, 31, 1; 54-69
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Proposal for Modernisation of Large Block System Buildings (Lbs) - Facades – Lublin University of Technology
    Autorzy:
    Miedviedieva Wright, Alina
    Ostańska, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/2051674.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    industrialized mass housing
    precast concrete
    housing
    modernization of the building
    extension
    façade
    uprzemysłowione budownictwo mieszkaniowe
    modernizacja budynków wielokondygnacyjnych
    prefabrykaty betonowe
    bariery architektoniczne
    poprawa funkcjonalności
    Opis:
    The over 40-years-old housing stock from the industrialized mass housing era is today functionally deficient and does not meet the current needs of residents. In particular, there are numerous architectural barriers, the systems are worn and obsolete, and the number of housing types is very limited. Examples of the modernization of multi-story residential buildings (the article presents those from Russia and Ukraine) confirm that this problem is universal, and a significant improvement of the building’s. Utility value can be achieved through a relatively small modification of the building fabric: precast concrete structures of the buildings prove to be flexible enough to accommodate deep changes. The authors present a concept of modernization of a building erected in a “large block” system, typical for the Polish housing of the 1970s in many cities. The case study concerns a particular building located in Lublin in one of the large housing estates – the concept of its modernization is compatible with the local spatial development plan, the proposed solutions are architecturally coherent and technically feasible.
    Źródło:
    Civil and Environmental Engineering Reports; 2021, 31, 3; 235-250
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Challenges in the Design of Prefabricated Single-Family Buildings with Expanded Clay Technology - Selected Architectural and Environmental Aspects
    Autorzy:
    Bradecki, Tomasz
    Tofiluk, Anna
    Uherek-Bradecka, Barbara
    Powiązania:
    https://bibliotekanauki.pl/articles/27314851.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    climate change mitigation
    building energy efficiency
    single-family houses
    prefabrication
    prefab architecture
    expanded clay
    sustainability by prefabrication
    zmiany klimatyczne
    łagodzenie zmian klimatycznych
    efektywność energetyczna budynku
    domy jednorodzinne
    prefabrykaty
    keramzyt
    trwałość prefabrykatów
    Opis:
    The architectural form of buildings is determined by many factors, one of the most important is construction technology. It remains in a close and inseparable relationship with architectural design. Contemporary technologies in construction are constantly subject to improvements, streamlining, changes aimed at increasing all kinds of efficiency (cost, thermal efficiency, labor input, etc.). One of today's widely discussed determinants of changes in the way buildings are designed and constructed is environmental issue. An awareness of environmental degradation and climate change and their consequences prompts the search for increasingly sustainable solutions. This paper summarizes the research on prefabricated solutions and their implementation, especially in single-family residential architecture. This article presents pre-design, design, and post-design experiences related to planning and realization of single-family houses with prefabricated wall technology made of light expanded clay concrete. The authors implemented comparative qualitative and quantitative research through case studies, the method also uses experiences from their own research by design practice. The advantages and disadvantages of prefabrication in the selected technology are presented. The authors attempt to answer the question of whether the individual architectural design approach is reflected in the relevant environmental considerations, including, first, those related to the mitigation of climate change and adaptation to its consequences, and to what extent the discussed technology fits into the assumptions of climate and environmentally responsible design.
    Źródło:
    Civil and Environmental Engineering Reports; 2022, 32, 4; 323--344
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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