Percorrer por autor "Nepomuceno, Miguel Costa Santos"
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- Built Heritage Research and EducationPublication . Martins, Ana Maria Tavares; Carlos, Jorge Manuel da Silva; Nepomuceno, Miguel Costa SantosThe University of Beira Interior (UBI) is one of the most recent Portuguese universities (1986). First polytechnic and then university it is structured in five faculties. The existing knowledge fields include engineering, social sciences, humanities, arts and letters, communication and health sciences. The Department of Civil Engineering and Architecture (DECA) is part of the Faculty of Engineering. The main degrees in the DECA-UBI are the Integrated Master degrees in Architecture and in Civil Engineering. These are a five year program which combines undergraduate and postgraduate study into a single course. The interdisciplinarity and interrelation, which link both research and education, are the basis for the production of knowledge at DECA-UBI. Built heritage is a very important cultural asset as the evidence of any society development and it is a field of interest at DECA-UBI. It refers to all aspects of the man-made environment such as houses, places of worship, commercial and office buildings, monuments and other places of historical significance. Built heritage helps to define a sense of place and identity for communities. It is not only about monuments of exceptional value but also includes small modest vernacular buildings that represent other equally important historical, social and cultural values. The attention paid to the built heritage has increased in Portugal. It should be emphasized that some of these buildings are now used for functions that did not exist when they were built. Furthermore, the actual technical requirements are not always compatible with the former building. A regular maintenance of these buildings may include preservation, rehabilitation, restoration, reconstruction, adaptation and interpretation. Balance needs to be achieved. The future of built heritage conservation is focused on the sustainable built environment. Conservation does not require buildings to be preserved in their original condition to accept contemporary use. It may change over time as community values evolve. However it is important, as a cultural asset, to retain its original heritage features. While heritage conservation is a key player in sustainability planning, interdisciplinary skills that are needed to deliver the heritage studies and projects of the new generation architects which combine aspects of cultural heritage with the best preventive conservation, projects, methodologies and practices. For this purpose it is important to link with engineering sciences. In this paper, the authors describe their experience concerning this link between research and education in the Integrated Master degree in Architecture, which is emphasized by the specific and multidisciplinary research performed as members of the faculty staff at DECA-UBI linking with other sciences of engineering as thermal comfort, acoustics and daylighting. A few examples presented are the analysis of the performance of acoustics and daylight of Cistercians churches, the acoustic analysis as a support for the architectural rehabilitation of an outdated theatre, the thermal performance of new housing of an adapted monastery, to perceive the user’s satisfaction of a vernacular housing through a post occupancy inquiry, the rehabilitation from vernacular ruins.
- From Popular to Contemporary: a Review on Portuguese Vernacular ArchitecturePublication . Salvado, João Pedro Ferreira; Martins, Ana Maria Tavares; Nepomuceno, Miguel Costa SantosThis research is based on the main principle that history repeats itself. Therefore, it can create interest in subjects that, at first sight, may look anachronistic. The authors recall the growing position towards architectural solutions, that take reference from the past, and retrace the studies perceived by the architects of the “Inquérito à Arquitectura Regional Portuguesa” (Survey on Regional Portuguese Architecture) of 1955/57. Since they were looking for a middle way between government impositions and the radicalism of the International Style, the results influenced not only their individual designs but also acquired a pioneer status, thus raising many new questions.
- GeoBIM for Geothermal Energy Efficiency in Buildings and Smart Cities: A ReviewPublication . Pinto, Hugo Alexandre Silva; Gomes, Luís Manuel Ferreira; Pais, Luís Andrade; Nepomuceno, Miguel Costa Santos; Bernardo, Luís; Gonçalves, Vanessa; Morais, Maria Vitoria; Perelló Marchiori, LeonardoThe global drive toward energy transition and carbon neutrality requires integrated and data-driven approaches for managing buildings and smart cities. Existing urban energy assessment frameworks remain fragmented and often lack multiscale interoperability between building-level models and territorial datasets. At the same time, shallow geothermal energy is emerging as an efficient and renewable solution for sustainable heating and cooling. To address these gaps, this study examines the potential of GeoBIM, the integration of Building Information Modeling (BIM) and Geographic Information Systems (GIS), as a unified framework for multiscale energy analysis and for supporting shallow geothermal applications. A systematic literature review was conducted based on the PRISMA framework, combining a systematic literature review using the Scopus database with the critical examination of representative case studies. The results show that GeoBIM-based modeling improves data quality, enhances thermal performance assessments, and supports the implementation of shallow geothermal systems, including energy piles and district-scale ground-coupled networks. Reported applications demonstrate energy consumption reductions exceeding 40% in certain urban contexts. Several research gaps and challenges were identified, particularly data interoperability issues, lack of standardization, computational complexity, and the need for specialized training. Overall, the review indicates that GeoBIM offers a promising pathway for optimizing resources, supporting informed decision-making, and advancing resilient and sustainable smart buildings and cities.
- Metodologia para a composição de betões auto-compactáveisPublication . Nepomuceno, Miguel Costa Santos; Oliveira, Luiz António Pereira de; Lopes, Sérgio Manuel RodriguesNo presente trabalho são revistos alguns dos principais métodos de estudo da composição de betões auto-compactáveis, com especial incidência nos métodos propostos por Okamura et al., pela JSCE, pelo CBI e pelo LCPC. São também abordados os aspectos relativos ao desenvolvimento, aos materiais constituintes, às propriedades do betão fresco e endurecido e ainda à produção e manuseamento do material. A revisão efectuada permitiu observar que os métodos propostos por Okamura et al. e pela JSCE são os mais generalizados pela sua simplicidade, mas apresentam algumas limitações inerentes, associadas à dificuldade em optimizar e modelar as misturas com vista à obtenção de um qualquer valor médio especificado para a resistência à compressão do betão na fase de estudo da composição. Em resultado da apreciação efectuada, entendeuse adequado investigar a possibilidade de se delinear uma nova abordagem ou introduzir novos parâmetros para o cálculo da composição dos betões auto-compactáveis que permitissem responder a algumas dessas limitações, admitindo como ponto de partida o método proposto por Okamura et al.. A proposta a desenvolver deveria assentar em procedimentos de cálculo expeditos, cuja primeira e fundamental abordagem seria suportada por ensaios em argamassas, como propôs Okamura. Analisadas as propostas de diferentes autores, foi definido um intervalo de variação para cada um dos parâmetros que caracterizam o escoamento das argamassas (Gm e Rm), conducente à obtenção de betões auto-compactáveis. Para cada família de materiais finos (i.e., para cada associação de materiais finos), as dosagens de superplastificante e de água de amassadura que conduziram aos parâmetros Gm e Rm pretendidos, foram determinados por estudos experimentais em argamassas adoptando uma metodologia que difere ligeiramente daquela proposta por Okamura et al.. Foram introduzidos novos parâmetros para quantificar as dosagens de agregados finos (Vp/Vs) nas argamassas e de agregados grossos (Vm/Vg) nos betões e fizeram-se variar estes parâmetros abaixo e acima dos valores correspondentes propostos por Okamura et al., por forma a avaliar uma possível optimização das misturas, principalmente através da redução do volume de pasta. Finalmente, foram analisados os parâmetros que melhor se adequaram ao controlo da resistência à compressão das argamassas e, indirectamente, ao controlo da resistência dos betões. A análise efectuada foi direccionada unicamente para os betões do tipo finos (solução mais corrente) e apenas foram avaliados os aspectos físicos e mecânicos do seu comportamento. Foram efectuados estudos em argamassas e betões utilizando associações binárias e ternárias de materiais finos, que combinaram dois tipos de cimentos (CEM I 42,5R e CEM II/B-L 32,5N) e quatro adições: fíler calcário, cinzas volantes, sílica de fumo e fíler granítico. O fíler granítico utilizado, proveniente de desperdícios industriais, foi testado a título experimental como adição, com resultados promissores. Sob condições idênticas de escoamento, o fíler granítico revelou consumos de superplastificante idênticos àqueles obtidos com as cinzas volantes e fíler calcário (reconhecidamente úteis na produção de betões auto-compactáveis), enquanto que a sílica de fumo revelou consumos excessivos de superplastificante, quer em termos absolutos, quer comparativamente às restantes adições. Os resultados obtidos foram satisfatórios e culminaram com a apresentação de uma proposta para o estudo do betão auto-compactável do tipo finos, a qual facilita a optimização da mistura e permite estimar, na fase de estudo da composição, a resistência à compressão do betão.