ESTiG - Resumos Indexados à WoS/Scopus
URI permanente para esta coleção:
Navegar
Percorrer ESTiG - Resumos Indexados à WoS/Scopus por autor "Ferreira, Débora"
A mostrar 1 - 4 de 4
Resultados por página
Opções de ordenação
- Diatomaceous earth as a partial replacement for portland cement in mortars - a reviewPublication . Magalhães, Leandro; Gavilán, Ana; Ferreira, Débora; Merelles, SamiraOver the last years, the increase in CO2 emissions into the atmosphere, its impact on climate change, and issues related to the sustainability and environmental impacts generated by the participation of the construction industry in global warming, have led to countless researches, several of them looking to modernize cement production with alternative binders. The most known alternative binders used nowadays in the construction industry are slag obtained in blast furnaces, metakaolin and fly ashes obtained from burning coal in thermoelectric power stations. In the present paper, due to diatomaceous earth’s pozzolanic properties, is researched the possibility of the use of diatomaceous earth as an alternative binder. This work shows a review of studies about introduction of raw and calcined diatomaceous earth in cement mortars, and the feasibility of using this material as a binder in cement mortars. The different studies present that the introduction of different percentages of diatomaceous earth in mortars influences the physical and mechanical characteristics of the manufactured mortars. The tests performed in mortars with introduction of calcined diatomaceous earth show that the mechanical strength improves when compared to mortars manufactured with raw diatomaceous earth. The results of the compressive and flexural strength in mortars with introduction of calcined diatomaceous earth present lower values during the first 28 days, when compared with mortars without diatomaceous earth, however, there is a significant increase in the values of mechanical resistance, surpassing the values of mechanical resistance of mortars without diatomaceous earth at the end of 90 days. The water absorption by immersion tests also reveal that the increased introduction of diatomaceous earth increases the water absorption of the mortars.
- Evaluation and characterization of the built rural environment of the Montesinho natural park, Portugal. the inhavit projectPublication . Luso, Eduarda; Ferreira, DéboraIn Portugal, in recent decades, there has been an increase in the population and cities located on the coast and, on the contrary, a decrease in inland locations, with greater severity in rural areas. The causes are complex and not consensual, but it is clear that factors such as the lack of investment in the interior, emigration and migration to a coast that is increasingly autistic in its relationship with the rest of the territory, the abandonment of agriculture and aging of the population constitute sufficient ingredients to promote the desertification of some areas of the country. The abandonment and desertification of villages is not just a problem in Portugal, however. Although Portugal is one of the countries most affected by this problem that affects the entire national territory, it is a European problem that has been increasing since the second half of the 20th century. Concerned about this fact, which puts at risk the high level of abandonment of villages and places in the interior of Portugal, particularly those located in the northeast of Trás-os-Montes, the InHaVit Project - Sustainable approaches for the rehabilitation and revitalization of the cultural heritage built in the Montesinho Natural Park ( PNM), funded by FCT – Fundação de Ciência e Tecnologia, has as its main objective the evaluation and characterization of: (1) the rural built environment of the PNM, at the level of buildings and at the level of villages; and (2) socioeconomic and environmental factors that contribute to the vulnerability of PNM villages and vernacular architecture. In-depth knowledge of these aspects will help to understand the reasons why the villages were progressively abandoned. In the end, the project will propose strategies for risk mitigation, rehabilitation and conservation of built heritage, recognizing that the appreciation and preservation of vernacular architecture is a key element of cultural identity and that it can become a privileged factor for local development. This article aims to show the work methodology relating to the “in-situ” survey carried out so far, relating to point (1), as well as some very particular aspects of this region, namely the slate roofs and the water mills.
- Evaluation and characterization of the built rural environment of the Montesinho natural park, Portugal. The inhavit projectPublication . Luso, Eduarda; Ferreira, DéboraIn Portugal, in recent decades, there has been an increase in the population and cities located on the coast and, on the contrary, a decrease in inland locations, with greater severity in rural areas. The causes are complex and not consensual, but it is clear that factors such as the lack of investment in the interior, emigration and migration to a coast that is increasingly autistic in its relationship with the rest of the territory, the abandonment of agriculture and aging of the population constitute sufficient ingredients to promote the desertification of some areas of the country. The abandonment and desertification of villages is not just a problem in Portugal, however. Although Portugal is one of the countries most affected by this problem that affects the entire national territory, it is a European problem that has been increasing since the second half of the 20th century. Concerned about this fact, which puts at risk the high level of abandonment of villages and places in the interior of Portugal, particularly those located in the northeast of Trás-os-Montes, the InHaVit Project - Sustainable approaches for the rehabilitation and revitalization of the cultural heritage built in the Montesinho Natural Park ( PNM), funded by FCT – Fundação de Ciência e Tecnologia, has as its main objective the evaluation and characterization of: (1) the rural built environment of the PNM, at the level of buildings and at the level of villages; and (2) socioeconomic and environmental factors that contribute to the vulnerability of PNM villages and vernacular architecture. In-depth knowledge of these aspects will help to understand the reasons why the villages were progressively abandoned. In the end, the project will propose strategies for risk mitigation, rehabilitation and conservation of built heritage, recognizing that the appreciation and preservation of vernacular architecture is a key element of cultural identity and that it can become a privileged factor for local development. This article aims to show the work methodology relating to the “in-situ” survey carried out so far, relating to point (1), as well as some very particular aspects of this region, namely the slate roofs and the water mills.
- Evaluation and characterization of the built rural environment of the Montesinho Natural Park, Portugal. The inhavit projectPublication . Luso, Eduarda; Ferreira, DéboraIn Portugal, in recent decades, there has been an increase in the population and cities located on the coast and, on the contrary, a decrease in inland locations, with greater severity in rural areas. The causes are complex and not consensual, but it is clear that factors such as the lack of investment in the interior, emigration and migration to a coast that is increasingly autistic in its relationship with the rest of the territory, the abandonment of agriculture and aging of the population constitute sufficient ingredients to promote the desertification of some areas of the country. The abandonment and desertification of villages is not just a problem in Portugal, however. Although Portugal is one of the countries most affected by this problem that affects the entire national territory, it is a European problem that has been increasing since the second half of the 20th century. Concerned about this fact, which puts at risk the high level of abandonment of villages and places in the interior of Portugal, particularly those located in the northeast of Trás-os-Montes, the InHaVit Project - Sustainable approaches for the rehabilitation and revitalization of the cultural heritage built in the Montesinho Natural Park ( PNM), funded by FCT – Fundação de Ciência e Tecnologia, has as its main objective the evaluation and characterization of: (1) the rural built environment of the PNM, at the level of buildings and at the level of villages; and (2) socioeconomic and environmental factors that contribute to the vulnerability of PNM villages and vernacular architecture. In-depth knowledge of these aspects will help to understand the reasons why the villages were progressively abandoned. In the end, the project will propose strategies for risk mitigation, rehabilitation and conservation of built heritage, recognizing that the appreciation and preservation of vernacular architecture is a key element of cultural identity and that it can become a privileged factor for local development. This article aims to show the work methodology relating to the “in-situ” survey carried out so far, relating to point (1), as well as some very particular aspects of this region, namely the slate roofs and the water mills.