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The amount of plastics deposited in the environment is constantly increasing. To improve their circularity, numerous research lines emerge, such as the creation of new construction materials that incorporate polymeric waste. This practice manages to extend the life cycle of the waste, avoids the consumption of limited natural resources and gives the product additional characteristics. The re-use of polyurethane foam waste as a substitute for gypsum in ceiling tiles carries technical improvements such as a decrease in the weight of the material and in its thermal conductivity, maintaining a positive fire reaction performance. The goal of this work is to analyse its economic viability. For this, the financial assessments of the PU-Gypsum product and its standard alternative are compared. The results show that the Life Cycle Cost Analysis (LCCA) of the new precast is 6% cheaper. Despite the fact that the waste processing entails an extra cost, this is widely offset by the increase in the factory’s production capacity due to its shorter drying time. The manufacturing stage represents 3/5 of the total cost for both materials. The PU-Gypsum precast is an ideal market alternative to the traditional gypsum one with improved properties and proficient in an economic level.

The economic model of the construction sector is becoming more circular by emphasizing sustainability at all stages from the design, the production phase, the installation, the use, the removal and finally its transport to landfill. This work analyses the influence of added polyurethane foam waste from refrigerated industry on the technical properties (bulk density, water vapor permeability, and reaction to fire performance). The environmental properties were also measured through a comparative Life Cycle Analysis (LCA) between the traditional gypsum ceiling tile and a new organic one. The re-use of polyurethane waste in ceiling tiles causes technical improvements. The most relevant improvements noticed are the decrease in the density (28%), reduction in thermal conductivity (27%) and A1 classification for fire reaction. The comparative (LCA) between both tiles shows that the new product that incorporates polyurethane waste has significant improvement in CO2 (14%) and lower use of energy during the manufacturing process (14%). The following impact categories were also reduced: 9% in the case of the acidification of the ground and water, 9% for eutrophication and 31% reduction for non-hazardous waste. This work intends to reduce the carbon footprint and increase the sustainability of polyurethane gypsum products.

O presente artigo tem por objetivo analisar, através de dispositivos das ciências linguísticas e da semiologia de orientação saussuriana, quatro composições do poeta austríaco Ernst Jandl (1925-2000), um dos precursores da poesia concreta e experimental no pós-Modernismo. Ricamente influenciado pelas vanguardas Modernas, como o dadaísmo e a poesia sonora, Jandl apresenta uma poesia capaz de nos conduzir a reflexões profundas sobre aspectos específicos das linguagens verbais em praticamente todos os seus níveis (isto é, fonológico, morfológico, semântico, sintático etc.), sobretudo da língua alemã, em que compôs suas obras. Deste modo, resta também como objetivo deste trabalho expandir os sentidos de leitura e o alcance destas reflexões a partir da reunião dos campos da linguística e da crítica literária, cuja reconciliação foi mais do que recomendada pelo linguista Roman Jakobson. Ao término de cada seção, uma tradução em língua portuguesa para cada poema estudado será proposta, valendo-se da adaptação, tanto lexical quanto métrica e prosódica, dos mesmos critérios que nortearam as análises aqui dispostas. Busca-se, por fim, com estas traduções, explicitar a aplicabilidade empírica das ferramentas da semiótica no estudo da poesia, bem como contribuir indiretamente com a tese da arbitrariedade do signo concebido através de uma perspectiva imanente, conforme proposta por Ferdinand de Saussure.