Papers
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Caminhos do habitar quando formos idosos
Depois de um conjunto de notas introdutórias e de apresentação ao estudo global intitulado Programa de Habitação Adaptável Intergeracional desenvolvido num quadro Cooperativo e a Custos Controlados (PHAI3C), aborda-se, no presente artigo, em primeiro lugar, a necessidade e a oportunidade de uma nova oferta residencial muito diversificada para os idosos, matéria esta que é, depois, abordada em termos dos seus principais aspetos.Depois avança-se para o apontamento de algumas experiências diversificadas para o habitar dos idosos e, sequencialmente, aborda-se a temática do viver com independência numa sociedade envelhecida, matéria esta que é, em seguida, ligada ao uso/design universal habitacional e aos aspetos da influência da autonomização dos idosos numa renovada e talvez mais sustentável estratégia de cuidados de saúde
Year: 2023
Number Pages:
14p.
Author(s): Baptista Coelho, A.
: Infohabitar
Editor: Associação Portuguesa para a Promoção da Qualidade Habitacional - GHabitar APPQH
Volume:
Ano XIX, N.º 845.
Keywords: Espaços residenciais; Habitação para idosos; Habitação intergeracional; Habitação
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Characterization and Assessment of Performance of Innovative Lime Mortars for Conservation of Building Heritage: Paimogo
Along the Portuguese coastline, several military fortifications were built with the intentionto protect the territory from the constant military threat from the sea. These constructions have beensubjected, during centuries, to a very aggressive environment; the renders, whose main functionis the protection of walls, are particularly exposed to such actions. Nossa Senhora dos Anjos dePaimogo
Year: 2023
Number Pages:
24p.
Author(s): Lopes dos Santos, A. R.; Veiga, M. R.; Santos Silva, A.
: Applied Sciences
Editor: MDPI
Volume:
Volume 13.
Keywords: performance; mortar; lime; innovative; durability; conservation
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Characterization and assessment of performance of innovative lime mortars for conservation of building heritage: Paimogo
Along the Portuguese coastline, several military fortifications were built with the intention to protect the territory from the constant military threat from the sea. These constructions have been subjected, during centuries, to a very aggressive environment; the renders, whose main function is the protection of walls, are particularly exposed to such actions. Nossa Senhora dos Anjos de Paimogo
Year: 2023
Number Pages:
24p..
Author(s): Santos Silva, A.; Veiga, M. R.; Lopes dos Santos, A. R.
: Applied Sciences
Editor: MDPI
Volume:
13 (8).
Keywords: Performance; Mortar; Lime; Innovative; Durability; Conservation
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Characterization and Assessment of Performance of Innovative Lime Mortars for Conservation of Building Heritage: Paimogo
Along the Portuguese coastline, several military fortifications were built with the intention to protect the territory from the constant military threat from the sea. These constructions have been subjected, during centuries, to a very aggressive environment; the renders, whose main function is the protection of walls, are particularly exposed to such actions. Nossa Senhora dos Anjos de Paimogo
Year: 2023
Author(s): Lopes dos Santos, A. R.; Veiga, M. R.; Santos Silva, A.
: Applied sciences - Special Issue Innovative Construction Materials for Sustainable Heritage Conservation
Editor: MDPI
Keywords: performance; mortar; lime; innovative; durability; conservation
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Characterization of an Arundo donax-based composite: A solution to improve indoor comfort
Arundo donax (giant reed or giant cane) is a widely available, perennial, invasive, non-food crop, present worldwide and employed for several uses, including building practices. Considering the increasing demand for sustainable building materials, A. donax can be an eficient solution. This study investigated its properties as a bio-aggregate mixed with a sodium silicate solution as an adhesive. A horizontal analysis that provided a general characterization of the composite was carried out. The results showed that the A. donax-based composite had anapparent density of 517 kg/m3 , thermal conductivity of 0.128 W/(m.K), and high hygroscopicity, with a moisture buffering value of 4.33 g/(m2 %RH), property that could be both an advantage for indoor comfort and a drawback. The uncommon sound absorption behaviour can be comparable to granular materials, with the highest sound absorption coeficient values,
Year: 2023
Number Pages:
18p..
Author(s): Cintura, E.; Faria, P.; Molari, L.; Barbaresi, L.; D
: Industrial Crops & Products
Editor: Elsevier B.V.
Volume:
208 (2024) 117756.
Keywords: Mechanical properties; Hygroscopicity; Granular Material; Giant reed; Bio-waste; Acoustic absorption
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Characterization of an Arundo donax-based composite: A solution to improve indoor comfort
Arundo donax (giant reed or giant cane) is a widely available, perennial, invasive, non-food crop, present worldwide and employed for several uses, including building practices. Considering the increasing demand for sustainable building materials, A. donax can be an efficient solution. This study investigated its properties as a bio-aggregate mixed with a sodium silicate solution as an adhesive. A horizontal analysis that provided a general characterization of the composite was carried out. The results showed that the A. donax-based composite had an apparent density of 517 kg/m3, thermal conductivity of 0.128 W/(m.K), and high hygroscopicity, with a moisture buffering value of 4.33 g/(m2 %RH), property that could be both an advantage for indoor comfort and a drawback. The uncommon sound absorption behaviour can be comparable to granular materials, with the highest sound absorption coefficient values,
Year: 2023
Number Pages:
18.
Author(s): Cintura, E.; Faria, P.; Molari, L.; Barbaresi, L.; D
: Industrial Crops & Products
Editor: Elsevier B.V.
Volume:
Volume 208, Número 117756.
Keywords: Mechanical properties; Hygroscopicity; Granular Material; Giant reed; Bio-waste; Acoustic absorption
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Characterization of mortar from Casa Barbot (Portugal), a case study from the beginning of the 20th century
The popularity of natural cement (Roman cement) in buildings from the late 19th and thebeginning of the 20th century and the high diversity of characteristics of natural cement demandresearch of mortar and binders used in the buildings of this period in Portugal. Understandingthe type of binder used in the historic buildings will help the project/intervention team to makethe best decisions in terms of the development of compatible mortars for historical conservationpurposes. Casa Barbot is one of the Art Nouveau examples of the beginning of the 20th century inPortugal. The garden of this building is characterized by peculiar elements in terms of materials andarchitecture. Full characterization of the mortars employed in the construction of this building as wellas identification of the used binder is the main objective of this study. The study comprises a widerange of laboratory characterization techniques such as X-ray fluorescence (XRF), X-ray diffraction(XRD), petrography, open porosity, density, water absorption by capillarity, and compressive strength.The results show the diversity of compositional characteristics in the mortars used in the decorativeelements in the period garden of Casa Barbot. All mortars are composed of Portland cement with amix of additives such as blast furnace slag, limestone filler, air lime, and the occasional presence ofcharcoal. The results raise doubt about the use of natural cement as stated in the historical documents.This study will broaden the scientific knowledge of the materials of that period in Portugal to providea comprehensive plan for the preservation of historical buildings.
Year: 2023
Number Pages:
18p..
Author(s): Maljaee, H.; Velosa, A.; Santos Silva, A.
: Buildings
Editor: MDPI
Volume:
13.
Keywords: Conservation; Art Nouveau; Portland cement; Mortar; 20th century
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Characterization of Relative Movements between Blocks Observed in a Concrete Dam and Definition of Thresholds for Novelty Identification Based on Machine Learning Models
Dam surveillance activities are based on observing the structural behaviour and interpretingthe past behaviour supported by the knowledge of the main loads. For day-to-day activities, datadrivenmodels are usually adopted. Most applications consider regression models for the analysis ofhorizontal displacements recorded in pendulums. Traditional regression models are not commonlyapplied to the analysis of relative movements between blocks due to the non-linearities related to thesimultaneity of hydrostatic and thermal effects. A new application of a multilayer perceptron neuralnetwork model is proposed to interpret the relative movements between blocks measured hourly in aconcrete dam under exploitation. A new methodology is proposed for threshold definition related tonovelty identification, taking into account the evolution of the records over time and the simultaneityof the structural responses measured in the dam under study. The results obtained through thecase study showed the ability of the methodology presented in this work to characterize the relativemovement between blocks and for the identification of novelties in the dam behaviour.
Year: 2023
Author(s): Mata, J.; Miranda, F.; Antunes, A.; Romão, X.; Santos, J.
: Water
Editor: mdpi
Keywords: Moving average of the residuals; Threshold definition; Structural health monitoring; Multilayer perceptron neural network model; Concrete dam
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Composition of renders and plasters of award-winning buildings in Lisbon (Portugal): A contribution to the knowledge of binders used in the 20th Century
This paper reports on the study of renders and plasters from 20th-century award-winning buildings in Lisbon (Portugal) with the Valmor Prize for Architecture. The mortars have been investigated through XRD, optical and electronic microscopy (SEM-EDS), thermal analysis (TGA/DTA), wet chemical analyses and AAS. The results reveal that the use of air lime lasted until the 1940s. It also highlights the beginning of using of Portland cement in mortars in the 1930s, mixed with airlime, and the abandonment of mortar formulations solely based on air lime. This study highlights the use of finishing lime-gypsum-based mortars until the 1940s and different types of Portland cement from the 1940s onwards. Portland cement was the main binder for the analysed stoneimitating mortars from 1940s to 1970s. Finally, salt contamination was occasionally found in mortars, which generally reveal a good state of conservation
Year: 2023
Number Pages:
31p..
Author(s): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
: International Journal of Architectural Heritage
Editor: Taylor & Francis
Keywords: Pasters; Renders; Mineralogy; Microscopy; Hydraulic mortars; Characterisation; Aerial mortars; 20th century
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Conceptual and quantitative categorization of wave
Beaches combined with sloping structures are frequently the frst element of defense to protect urban areas from the impact of extreme coastal fooding events. However, these structures are rarely designed for null wave overtopping discharges, accepting that waves can pass above the crest and threat exposed elements in hinterland areas, such as pedestrians, urban elements and buildings, and vehicles. To reduce risks, Early Warning Systems (EWSs) can be used to anticipate and minimize the impacts of fooding episodes on those elements. A key aspect of these systems is the defnition of non-admissible discharge levels that trigger signifcant impacts. However, large discrepancies in defning these discharge levels and the associated impacts are found among the existing methods to assess foodings. Due to the lack of standardization, a new conceptual and quantitative four-level (from no-impact to high-impact) categorization of food warnings (EW-Coast) is proposed. EW-Coast integrates and unifes previous methods and builds on them by incorporating feld-based information. Thus, the new categorization successfully predicted the impact level on 70%, 82%, and 85% of the overtopping episodes afecting pedestrians, urban elements and buildings, and vehicles, respectively. This demonstrates its suitability to support EWSs in areas vulnerable to wave-induced fooding.
Year: 2023
Author(s): Garzon, J.L.; Ferreira, O.; Reis, M. T. L. G. V.; Ferreira, A. M.; Fortes, C. J. E. M.; Zózimo, A. C.
: Scientific Reports
Editor: Communications Engineering
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