Navegando por Assunto "Revestimento cerâmico"

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Acesso aberto (Open Access)
Análise quantitativa da degradação de fachadas em revestimento cerâmico: estudo de caso em edifícios de Belém– PA
(Universidade Federal do Pará, 2018-06-15) SANTOS NETTO, Clementino José dos; MACEDO, Alcebíades Negrão; http://lattes.cnpq.br/8313864897400179
This study approaches the collect and identification of pathological manifestations in the façades of five buildings, with ceramic coating system (SRC), in the Metropolitan Region of Belém / PA, using Silva 's adapted damage quantification model (2014). The proposed methodology consists of a systematization of the inspection process, with identification, mapping and quantification of the pathological manifestations in the façades of the buildings, applying the Damage Factor (FD) as a way to evaluate the degradation behavior as a function of influence factors such as type of manifestation, age and solar orientation of the facades, also analyzing agents of degradation such as directed rain, solar radiation and humidity. Subsequently, the Combined Damage Factor (FDC) was applied, which assigns weighting indices to the FD, related to the repair cost of each observed anomaly. Analyzing the results, it was verified that the pathological manifestation stain (MA) on the ceramic coating was the one that presented the highest percentage of occurrence, that is, greater degraded area, among the types of anomalies observed. In addition, this manifestation presented high values of FDC in all cardinal orientations and expressive values of this index of degradation, both in façades under 20 years and in those with more than 20 years. These results are directly influenced by the extremely aggressive climate of the region, which presents constant rains and high humidity (up to 95%), favoring the propagation of this anomaly (staining) already in the first ages of the building, since the façades (10 and 16 years old) already had considerable degradation rates of this pathological manifestation. The orientation that presented the highest degradation factor was the South direction (FDTotal=9.42%), influenced directly by the phenomenon of directed rainfall, which presents its highest Directed Rain Index (ICD) in the North direction, affecting the facades oriented in the South direction. After the application of FDC, the pathological manifestation of ceramic detachment / displacement (DC) presented the highest degradation index (FDCMédio=39.22%), due to its high restoration cost, when compared to the repair value of the other anomalies evaluated. By means of the histograms of FDTotal and FDCTotal, a characteristic exponential curve was observed that shows a decrease in the frequency of occurrence as the value of the degradation index increases. This characteristic curve was also observed in Silva (2014) and Souza (2016).
Acesso aberto (Open Access)
Avaliação através do desempenho térmico de edificação verticalizada em Belém-PA
(Universidade Federal do Pará, 2013-04-01) VINAGRE, Natália Daniele de Lima; PERDIGÃO, Ana Kláudia de Almeida Viana; TOSTES, Maria Emília de Lima; http://lattes.cnpq.br/4197618044519148; http://lattes.cnpq.br/9009878908080486
This dissertation studies the thermal performance of materials in a vertical facade building in the city of Belém - PA, Brazil. This work aims to contribute to the study of the thermal performance and efficiency of materials used in residential buildings of the vertical envelopment, between opaque elements, two types of materials currently very used in construction were selected, painting and ceramic coating. It also studies the influence of the height of the building on its thermal performance and energy efficiency. The study was conducted with the use of computational modeling in EnergyPlus code that evaluates the thermal performance of the building, the influence of the height at the same energy efficiency. Compares the thermal performance of the two selected materials, it was found that the ceramic coating presented building with the average internal temperature of 0.42 ° C above the temperature at the building painted, hence less thermal performance. The influence of the height of the floor did not produce a significant variation in internal temperature, because its increase, small decrease occurred in the internal temperature with thermal gradient of about -0.07 º C / m due to the wind speed is greater when more higher the pavement. It is also considered for this study as passive natural ventilation strategy for the building under study, according to the analysis of Bioclimatic chart Givoni contribute positively to the condition of the internal temperature and humidity, and consequently the user.