Browsing by Issue Date, starting with "2020-03-24"
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- Microcimento: normalização e patologia construtivaPublication . Oliveira, José Miguel; Marçal Gonçalves, Marta; Renda, JorgeQuando novos materiais aparecem no mercado, a falta de normalização e uma eventual maior dificuldade na altura da aplicação podem originar patologias. É o caso do microcimento, que é um material de base cimentícia com um tamanho de grão menor que o cimento comum. Em termos comerciais, a designação de microcimento aplica-se a um sistema de materiais multicamadas, em que as argamassas modificadas por polímeros fazem parte e que, no final da aplicação, constituem um único revestimento contínuo. Tem uma espessura total muito fina e está aumentando a cota de mercado, principalmente na execução de revestimentos de pisos, paredes e tetos interiores. O seu uso também ocorre em elementos exteriores, incluindo revestimentos de móveis urbanos e paredes de piscinas. Com base num caso de estudo sobre a aplicação de um revestimento de microcimento, descrevemos as principais anomalias construtivas observadas e identificamos as causas prováveis. Foi realizado um breve estudo dos produtos comercializados em Portugal, bem como uma revisão da bibliografia específica e normalização aplicável. Da análise realizada, verificou-se que grande parte deste material é comercializado em Portugal sem atender aos requisitos da legislação portuguesa e europeia. Além disso, as informações técnicas fornecidas pela maioria dos fabricantes e comerciantes eram insuficientes. A formação prática dos aplicadores também é considerada essencial. Onão cumprimento de determinados requisitos em alguns materiais de construção e seus aplicadores pode levar a uma maior ocorrência de patologias, que, além dos aspetos estéticos, afetarão a funcionalidade, a durabilidade das soluções e a sustentabilidade dos edifícios.
- Neither boundaries nor barriers. International interactions between the cities of Santana do Livramento (Brazil) and Rivera (Uruguay)Publication . Prestes, Laura Roratto; Marçal Gonçalves, Marta; University of CantabriaStarting from the premise of encouraging better management of the historical heritage in the south of Brazil, this work aims to disclose a social situation that unites two countries and two cultures, mixing them together and integrating the residents of Santana do Livramento and Rivera. These cities are located alongside in the borders of Brazil and Uruguay, respectively, without physical or natural division, only with boundary landmarks. In this assignment, it will be brought attention to the beginning of territorial discussions until the newest decrees of the evolution of political discussions about the separating line and the way it changed the population, so they would become one. Plenty of documental and online research, such as legislative decrees, maps, reports, and local history books, went through analysis for the construction of this study, with the main objective of bringing recognition to a territorial arrangement that resulted in a unique interaction between two countries. The situation of the unusual case is the main characteristic of the historical heritage, transcending from the history of how this territory came together and how the population became one, bounding cultures and changing the ways of living. It is of great importance to reveal this border so that the appropriation of the own residents with their past and heritage is increased, hoping to bring bigger investments and a more careful look to the visual of both cities so that they could prosper as they should. Taking this subject into consideration, it is noteworthy that the visibility of southern Brazilian and Uruguayan heritage must be explored in a way that brings more value to this territory, instead of only being outgrown by the profit, immediate gain of big corporations and buying power, so that this population can have opportunities to grow and prosper.
- O Dragão das 1000 floresPublication . Equipa CCVAlgPequenos Cientistas em Casa Acompanha as atividades que o Centro Ciência Viva do Algarve publica para poderes fazer em casa. Diverte-te em família, fazendo as nossas atividade e partilha connosco os resultado através de fotografias ou vídeo. #PequenosCientistasEmCasa #PequenosCientistasCCVAlg HOJE : “O DRAGÃO DAS 1000 FLORES” "Adaptámos uma história e vamos mostrar-te como a leitura e a ciência se podem misturar :)" ATENÇÃO!! Não saias de casa para adquirir nenhum destes materiais. Se não os tiveres todos, aguarda pelo nosso próximo desafio! #PequenosCientistasEmCasa #PequenosCientistasCCVAlg #ccvalg #cienciaviva #ficaemcasa #faro #dragao #flores
- Canning portimão. Proposal of a pedestrian route in Portimão, PortugalPublication . Grade, António; Marçal Gonçalves, Marta; Penetra, Andreia; Lombillo, I.; Blanco, H.; Boffill, Y.Being tourism the main driver of the region's economy, the touristic proposal presented here, based on the canning industrial heritage, is original and topical. This proposal includes places, buildings, and neighborhoods of the city linked to the theme of the canning industry, and it was intended to make known this heritage. The suggested pedestrian path aims to provide a visit to the city of Portimão from another point of view and to be a promoter of hiking and, simultaneously, to be another offer of cultural tourism in this city. On the other hand, being an urban route, it can be carried out by several age groups and all year round. It is possible to reach a more in-depth knowledge of the industrial history, as well as the political, social and economic past of Portimão, and simultaneously, of the country itself, through the history of canned fish and of the canning industry, reason why there is a great touristic potential for the proposal. It is intended to sensitize the local community and tourists to the richness of the existing heritage in Portimão, positively influencing their social responsibility, while valuing the city and showing its history. The development of this paper was based on bibliographical research, photographic surveys and visits to the sites related to the subject, to obtain relevant information. However, there were found some contradictions in the consulted bibliographical sources and the disappearance of some records, along with the closure and/or demolition of the existing canneries, made the development of this work difficult
- Silves bridge geometric model via structure-from-motion: tool for heritage digital catalogsPublication . Prates, Gonçalo; Marçal Gonçalves, Marta; Lopes, Ana; Laranja, RobertoThe old bridge in Silves, Portugal, has five perfectly formed arches extending over the Arade river with about 76 meters long built of local materials. In the 14th century this structure was rebuilt on the location of a previous structure built when Silves was the Moorish capital between the 8th and 13th centuries occupation of the Algarve. Though a Roman road might have crossed this area, there is no medieval descriptions mentioning a bridge in Silves, still it is also known as the Roman bridge.After interventions in the 14th, 17th, 18th and 20th centuries, the bridge was classified as monument of public interest and became pedestrian-only and frequently evaluated for its risk of collapse. Stereo-photogrammetry is a recognized surface reconstruction tool applied for almost one century, where from several overlapping images of the surface a 3D model can be obtained. Contrasting with classical stereo-photogrammetry, Structure-from-Motion (SfM) is a nearly automated compilation of digital imagery processing strategies that solve for camera position and surface geometry using matching features identified in several images from diverse perspectives and preferably with high degree of overlap. Together with ongoing increase in computer power, SfM allowed digital stereophotogrammetry to be operative for close-range, high-resolution and non-metric overlapping digital images, and cost-effective. Applying these nearly automated strategies to digital images of the old bridge in Silves taken from the surrounding grounds, a dense point-cloud was computed providing its complete digital model allowing accurate measurements and materials visual identification, key elements for heritage digital catalogs and historical building information models.