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Izolacyjność termiczna papierowych przegród budowlanych

Noszczyk Paweł, Jasiołek Agata, Łątka Jerzy

Przegląd Budowlany

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2023

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R. 94, nr 3-4

125--128

PL

W artykule omówiono przykłady przegród budowlanych wykonanych z materiałów pochodzenia celulozowego. Przedstawiono różne sposoby konstrukcji tych przegród zewnętrznych oraz obliczono ich izolacyjność termiczną. Numeryczne obliczenia cieplne wykonano dla geometrii 2D z uwzględnieniem niejednorodności przegród i o przewodności cieplnej λ dla materiałów papierowych wyznaczonych na podstawie wcześniej wykonanych badań doświadczalnych. Łącznie zaproponowano geometrię 6 konstrukcji ścian zewnętrznych, dla których osiągnięto wartości współczynnika przenikania ciepła Uc poniżej 0,20 W/m2K przy grubościach przegród nieprzekraczających 32 cm.

EN

The article discusses examples of building partitions made of materials of cellulose origin. Various methods of construction of these external partitions were presented and their thermal insulation was calculated. Numerical thermal calculations were performed for 2D geometry, taking into account the non-uniformity of partitions and the thermal conductivity λ for paper materials determined on the basis of previously performed experimental tests. In total, the geometry of 6 external wall structures was proposed, for which the values of the heat transfer coefficient Uc below 0,20 W/m2K were achieved with partition thicknesses not exceeding 32 cm.

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Termoizolacyjność materiałów pochodzenia celulozowego - tektura falista i plaster miodu

Noszczyk Paweł, Łątka Jerzy, Jasiołek Agata

Materiały Budowlane

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2022

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nr 11

154--156

PL

W artykule opisano badania doświadczalne wyznaczenia współczynnika przewodzenia ciepła materiałów pochodzenia celulozowego typu tektura falista i plaster miodu. Badania wykonano metodą stacjonarną w aparacie płytowym. Przeanalizowano wpływ wielkości pustek powietrznych oraz kierunku przepływu ciepła przez materiał na jego przewodność cieplną. Uzyskane wyniki wskazują na porównywalną termoizolacyjność do materiałów powszechnie stosowanych w budownictwie jako termoizolacje.

EN

The article describes the experimental tests to determine the thermal conductivity coefficient for materials of cellulosic origin, such as corrugated cardboard and honeycomb. The tests were performed using the stationary method in a plate apparatus. The influence of the size of the air voids and the direction of heat flow through the material on its thermal conductivity was analyzed. The obtained results indicate comparable thermal insulation to materials commonly used in construction as thermal insulation.

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Preliminary report on ignitibility of combined pro-ecological waterproofing and fire retardant coatings for paperboard in architectural application

Jasiołek Agata

Architecture Civil Engineering Environment

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2022

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Vol. 15, no. 4

105--115

EN

Both fire and water protection are crucial for the safety and usability of paper-based products applied as building components. The presented study investigates the possibility of combining environmentally-friendly fire retardants with oiland wax-based waterproofing coatings on paperboard for architectural applications. The proposed impregnation technique can be used as protection for paper-based temporary and emergency structures, or as part of the protective system for building envelopes of permanent structures. The fire retardants selected for the tests were diammonium phosphate and a mixture of borax and boric acid in a 1:1 ratio. Single-flame ignitability tests were performed on the impregnated specimens to assess the fire performance of specimens with fire impregnation, waterproofing impregnation and both. A Life Cycle Assessment analysis was performed for fire-retardant paperboard. The study has shown that the application of layered fire and waterproofing treatments on paperboard components is possible and leads to a significant reduction in flammability compared to untreated and only waterproofed specimens.

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Cardboard as a construction material for temporary architecture: a case study

Jasiołek Agata

Challenges of Modern Technology

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2018

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Vol. 9, no. 1

18--24

EN

The topic of this article is cardboard as a construction material for temporary architecture: a case study of the Zbigniew Herbert Exhibition Pavilion. The Pavilion was designed and built by a group of 18 students at the course ProtoLAB at the Faculty of Architecture at Wroclaw University of Science and Technology in July 2018. The project focused on constructing Pavilion components out of paper tubes and corrugated cardboard, which have been proven to be a promising building material. Wood-based materials also were used to strengthen the construction. The design of the Pavilion aimed to use the geometry of the components to minimize the amount of metal used to connect elements. The article focuses on the problems of paper’s strength, stability, connections, impregnation, and the way they have been solved during the building process. It also discusses the topic of the possibility of using the unimpregnated cardboard in outdoor constructions. The structure was then evaluated after 5 months of being used and exposed to diverse weather conditions. Damages in the Pavilion elements are mentioned in the paper and the probable reasons why they have appeared are explained. Conclusions from this article may be useful when designing similar objects in the future.