Search Results - "Kleber, Franke Portella"

Novel approach to detect encasement failures in the anchorage system of guyed transmission towers by distribution of relaxation times by Scheffer de Matos, Tiago, Franke Portella, Kleber, Luiz Henke, Sérgio, D’Orey Gaivão Portella Bragança, Mariana, Medeiros de Almeida, Larissa

“…[Display omitted] •Identification of time constants of cement paste by EIS/DRT.•Characterization of the pore structure of cement paste by EIS/DRT.•Detection of…”
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Multiple techniques of microstructural characterization of DEF: Case of study with high early strength Portland cement composites by Franke Portella, Kleber, Pagan Hasparyk, Nicole, D'Orey Gaivão Portella Bragança, Mariana, Luís Bronholo, Jeferson, Gomes Dias, Bruna, Evangelista Lagoeiro, Leonardo

“…[Display omitted] •EBSD - showed a natural sand with a few strained quartz grains and other minerals.•Sigmoidal characteristics of DEF were more expressive for…”
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Alkali-silica reaction (ASR) - Investigation of crystallographic parameters of natural sands by backscattered electron diffraction by Portella, Kleber Franke, Lagoeiro, Leonardo Evangelista, Bronholo, Jeferson Luiz, Miranda, Dayane de Cristo, Bragança, Mariana D’Orey Gaivão Portella, Dias, Bruna Gomes, Hasparyk, Nicole Pagan, Kuperman, Selmo Chapira

“…This study involved analyzing several natural sands to ascertain the possible causes for distress due to ASR. The analyses were performed using the following…”
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Determining water content and other impurities in Siparuna guianensis Aublet essential oil using differential scanning calorimetry by Augustus, Caeser Franke Portella, Marilda, Munaro, Chrystian, de Assis Siqueira, Kleber, Franke Portella, Magn oacute lia, de Mendonca Lopes, Alex, Sander Rodrigues Cangussu, Raimundo, Wagner de Souza Aguiar

“…Siparuna guianensis Aublet is a predominant species in the Brazilian Cerrado. Some studies found that its essential oil has properties that could be useful for…”
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Nanostructured Titanium Film Deposited by Pulsed Plasma Magnetron Sputtering (Pdms) on a High Voltage Ceramic Insulator for Outdoor Use by Portella, Kleber Franke, Mengarda, Priscilla, Bragança, Mariana d'Orey Gaivão Portella, Ribeiro Júnior, Sebastião, Melo, Jose Sergio Santos de, Cerqueira, Dailton Pedreira, Pianaro, Sidnei Antonio, Mazur, Maurício Marlon

“…In this study, the cold plasma technique was used to produce nanometric titanium films with hydrophobic and anti-fouling properties. The films where deposited…”
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The effect of chloride, sulfate, and ammonium ions on the semiconducting behavior and corrosion resistance of AISI 304 stainless steel passive film by Pesqueira, Camila Melo, Luiz, Leonardo Augusto, Andrade, Juliano de, Garcia, Carlos Mario, Portella, Kleber Franke

“…ABSTRACT Water cooling systems usually receive additional chemical treatment and different features to prevent pitting corrosion on stainless steel which is…”
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Concretos com cinza do bagaço da cana-de-açúcar: avaliação da durabilidade por meio de ensaios de carbonatação e abrasão by Sofia Araújo Lima, Almir Sales, Fernando do Couto Rosa Almeida, Juliana Petermann Moretti, Kleber Franke Portella

“…O bagaço é gerado como resíduo do processamento do açúcar e do álcool. Esse resíduo é utilizado para a cogeração de energia por meio da queima em caldeiras,…”
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Use of waste polymers in concrete for repair of dam hydraulic surfaces by Galvão, José Carlos Alves, Portella, Kleber Franke, Joukoski, Alex, Mendes, Roberto, Ferreira, Elizeu Santos

“…The durability of a concrete structure is strongly influenced by the inadequate use of materials and by the physical and chemical effects of the environment of…”
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The inhibitory and comparative effects of Zn-Al layered double hydroxide microcontainers intercalated with benzotriazole and nitrite for corrosion protection coatings on AISI 1010 carbon steel by Seniski, Anelize, Monteiro, Rafael Frasson, Carrera, Gilberto Teixeira, Bragança, Mariana d’Orey Gaivão Portella, Portella, Kleber Franke

“…ABSTRACT The electrochemical impedance spectroscopy and the open circuit potential techniques were used to analyse coatings with layered double hydroxides…”
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Deposition and characterization of AlN thin films on ceramic electric insulators using pulsed DC magnetron sputtering by Mazur, Maurício Marlon, Pianaro, Sidnei Antonio, Portella, Kleber Franke, Mengarda, Priscilla, Bragança, Mariana D'Orey Gaivão Portella, Ribeiro Junior, Sebastião, Santos de Melo, José Sérgio, Cerqueira, Dailton Pedreira

“…Porcelain electric insulators are fundamental support devices to act as holders for transmission lines. The exposition to pollutants environments such as…”
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Performance analysis and life-cycle assessment of energy distribution system insulators in aggressive environments by Érico Shooji Oliveira de Andrade Tanobe, Guilherme Silva Cunha, Mariana D'Orey Gaivão Portella Bragança, Kleber Franke Portella, Gilberto Teixeira Carrera

“…In this study, the energy distribution system was evaluated against the durability of materials and its environmental aspects, in relation to the life-cycle…”
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Oxidação da pirita e seus efeitos em argamassas de cimento Portland sujeitas ao ataque por sulfatos de origem interna by Pereira, Eduardo, Portella, Kleber Franke, Bragança, Mariana d'Orey Gaivão Portella, Ochiliski, Lucas Maier, Oliveira, Isabela Cristina

“…RESUMO O ataque por sulfatos de origem interna é resultante da reação química entre os íons Fe2+ e SO4 2-, provenientes da oxidação de agregados sulfetados, e…”
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Reação Sulfática Interna (RSI) como degradação de matriz cimentícia: comportamento de pastas dosadas com diferentes teores de contaminação por sulfato by Brandão Capraro, Ana Paula, Farias de Medeiros, Marcelo Henrique, Hoppe Filho, Juarez, Portella Brangança, Mariana, Portella, Kleber Franke, Oliveira, Isabela Cristina

“…El presente trabajo, desarrollado en el ámbito del Programa de P&D ANEEL, proyecto 6491-0301/2013, tiene el objetivo de evaluar cómo las diferentes…”
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Internal attack by sulphates in cement pastes and mortars dosed with different levels of pyrite by Capraro, Ana Paula Brandão, Braga, Vinícius, de Medeiros, Marcelo Henrique Farias, Hoppe Filho, Juarez, Bragança, Mariana O. G. P., Portella, Kleber Franke, de Oliveira, Isabela Cristina

“…This study aims to investigate cementitious compound behaviour at early stages (up to 168 days), primarily when dosed with different levels of pyrite. To…”
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Estudo do desempenho do aço carbono AISI 1010 sob o efeito de barreira de revestimento epóxi/HDL-Zn-Al-NO2- como inibidor de corrosão, via espectroscopia de impedância eletroquímica by Seniski, Anelize, Oliveira, Tassiane Apolinário de, Portella, Kleber Franke, Carrera, Gilberto, Bragança, Mariana d’Orey Gaivão Portella

“…RESUMO Para estender a vida útil de materiais metálicos dos artefatos das linhas de distribuição e de transmissão de energia vem sendo estudado um cristal do…”
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Physicochemical evaluation of oxidation of diabase aggregates with sulfide minerals: influence of particle size, pH of the medium and pyrite concentration by Goto, Hudson, da Silva Braga, Vinícius, Capraro, Ana Paula Brandão, de Medeiros, Marcelo Henrique Farias, Bragança, Mariana O. G. P., Portella, Kleber Franke, de Oliveira, Isabela Cristina

“…Large constructions, such as concrete dams, commonly use aggregates extracted from rock masses near the implantation sites, which may contain sulfide minerals…”
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Análise de desempenho e ciclo de vida de isoladores do sistema de distribuição de energia em ambientes de elevada agressividade by Tanobe, Érico Shooji Oliveira de Andrade, Cunha, Guilherme Silva, Bragança, Mariana D'Orey Gaivão Portella, Portella, Kleber Franke, Carrera, Gilberto Teixeira

“…Neste estudo, foi avaliado o sistema de distribuição de energia frente ao desempenho em durabilidade de materiais e seus aspectos ambientais, com relação às…”
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Avaliação da taxa de corrosão do aço carbono 1040 em solo por modulação de frequência eletroquímica (EFM) by Matos, Tiago Scheffer de, Portella, Kleber Franke, Henke, Sérgio Luiz, Bragança, Mariana D´Orey Gaivão Portella, Berrêdo, Alessandro Cesar de Sousa

“…RESUMO A taxa de corrosão instantânea do aço carbono 1040 enterrado em solo, por 6 meses, foi medida por meio da técnica de modulação de frequência…”
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Biofouling e biodeterioração química de argamassa de cimento portland em reservatório de usina hidroelétrica Biofouling and chemical biodeterioration in hydroeletric power plant portland cement mortar by Kleber Franke Portella, Alex Joukoski, Ariel Scheffer da Silva, Nicole Machuca Brassac, Carlos Eduardo Belz

“…Last decade Brazilian rivers experimented progressive biofouling of Limnoperna fortunei communities and Cordylophora caspia hydroids. The microhabitat is so…”
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Biofouling e biodeterioração química de argamassa de cimento portland em reservatório de usina hidroelétrica by Portella, Kleber Franke, Joukoski, Alex, Silva, Ariel Scheffer da, Brassac, Nicole Machuca, Belz, Carlos Eduardo

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