Encontrados 11 documentos, a visualizar página 1 de 2
Long-term performance of thermal insulating composite systems based on water re...
Borsoi, Giovanni; Parracha, João L.; Bersch, Jéssica D.; Garcia, Ana; Dionísio, Amélia; Faria, Paulina; Veiga, Rosário; Flores-Colen, InêsExternal Thermal Insulation Composite Systems (ETICSs) are increasingly applied in both new construction and energy retrofitting, where long-term durability under environmental exposure is critical to preserving thermal efficiency. Moisture ingress represents a key degradation factor, reducing insulation performance and undermining energy savings promoted by the ETICS. The effectiveness of these systems is stro...
Long-Term Performance of Thermal Insulating Composite Systems Based on Water Re...
Borsoi, Giovanni; Parracha, João L.; Bersch, Jéssica D.; Garcia, Ana R.; Dionísio, Amélia; Faria, Paulina; Veiga, Rosário; Flores-Colen, InêsExternal Thermal Insulation Composite Systems (ETICSs) are increasingly applied in both new construction and energy retrofitting, where long-term durability under environmental exposure is critical to preserving thermal efficiency. Moisture ingress represents a key degradation factor, reducing insulation performance and undermining energy savings promoted by the ETICS. The effectiveness of these systems is stro...
Numerical simulation of salt decay in masonry: evaluation of potential influenc...
Nazerigivi, Amin; Vasconcelos, Graça; Ghiassi, Bahman; Dionísio, AméliaSalt decay is a significant problem in the preservation of masonry structures. In order to understand and simulate the process of salt deterioration in porous masonry materials, it is crucial to identify and measure the key influencing parameters that affect the deterioration process. In this study, we investigated the factors that must be experimentally measured and used as input parameters in numerical simula...
Aerosol-paint graffiti: the effects on calcareous stone
Dionísio, Amélia; Aires-Barros, Luís; Ribeiro, TelmaThe aim of this study was an evaluation of the harmful effects of aerosols used for graffiti upon cultural heritage made of stone. Two types of Portuguese calcareous stone were studied, a marble, Branco, and a limestone, Lioz. These are the most common materials used for statues in public areas in the city of Lisbon. Samples were collected from quarries at Estremoz and Pêro Pinheiro areas. Two sets of parallel ...
When graffiti is not art: the damage of alkyd sprays on calcareous stones emplo...
Dionísio, Amélia; Ribeiro, TelmaIn order to evaluate the damage of alkyd sprays on calcareous monument stones, limestone and marble samples of renowned building materials and ornamental stones in the Portuguese architecture, Lioz and Branco, were submitted to artificial graffiti. The harmfulness was assessed in relation to the variation of water vapour permeability, static contact angle, water microdrop absorption, chromatic changes and surfa...
Performance parameters of ETICS : Correlating water resistance, bio-susceptibil...
Parracha, João Luís; Borsoi, Giovanni; Flores-Colen, Inês; Veiga, Rosário; Nunes, Lina; Dionísio, Amélia; Gomes, M. Glória; Faria, PaulinaThe use of External Thermal Insulation Composite Systems (ETICS) significantly increased in the last decades due to their enhanced thermal properties, low installation cost and ease of application, not only in new constructions but also for thermal retrofitting of building facades. These multilayer rendering systems are constantly exposed to weathering agents and anthropic factors which can lead to physical-mec...
Effects of hygrothermal, UV and SO₂ accelerated ageing on the durability of ETI...
Parracha, João Luís; Borsoi, Giovanni; Veiga, Rosário; Flores-Colen, Inês; Nunes, Lina; Garcia, Ana R.; Ilharco, Laura M.; Dionísio, AméliaExternal Thermal Insulation Composite Systems (ETICS) have been extensively used for either new constructions or building facades retrofitting in the last decades. These systems can provide improved thermal performance to the building envelope. However, their long-term durability remains a pervasive concern, with some systems presenting relevant anomalies after few years from their application. The durability a...
Effects of hygrothermal, UV and SO2 accelerated ageing on the durability of ETI...
Parracha, João L.; Borsoi, Giovanni; Veiga, Rosário; Flores-Colen, Inês; Nunes, Lina; Garcia, Ana; Ilharco, Laura M.; Dionísio, Amélia; Faria, PaulinaExternal Thermal Insulation Composite Systems (ETICS) have been extensively used for either new constructions or building facades retrofitting in the last decades. These systems can provide improved thermal performance to the building envelope. However, their long-term durability remains a pervasive concern, with some systems presenting relevant anomalies after few years from their application. The durability a...
Qual a origem do filme negro da escultura “Morte de Cleópatra”?
Azevedo, Pedro; Macedo, Maria Filomena; Dionísio, AméliaEste trabalho surge da necessidade de identificar um filme negro que cobre grande parte da escultura Morte de Cleópatra, desfigurando-a. Esta obra, esculpida em mármore de Carrara, pertence ao Jardim Botânico Tropical, em Lisboa. Efetuaram-se operações in situ envolvendo medições colorimétricas, testes de adesão e mapeamento das formas de degradação. O filme negro foi igualmente amostrado e observado a nível ma...
Iron and arsenic-rich nanoprecipitates associated with clay minerals in sulfide...
Valente, Teresa Maria Fernandes; Gomes, Patrícia; Braga, Maria Amália Castro Sequeira; Dionísio, Amélia; Pamplona, J.; Grande, J. A.The relationships between clay minerals and associated iron and arsenic-rich phases are a main scientific issue in reactive mine waste-dumps. Therefore, this paper documents the composition and morphology of the fine fraction (<2 μm), including the nano-sized Fe and As precipitates, associated with clay minerals in three distinctive sulfide-rich waste-dumps: Cerdeirinha, Lapa Grande, and Penedono (Northern Port...