Search Results - "Medeiros, Marcelo Henrique Farias de"

Chloride penetration into concrete in an offshore platform-analysis of exposure conditions by Medeiros-Junior, Ronaldo Alves de, Lima, Maryangela Geimba de, Brito, Priscila Catarine de, Medeiros, Marcelo Henrique Farias de

“…The chloride penetration in three different exposure zones (Atmospheric, Splash and Tidal) of an offshore concrete platform in the year 2000 and 2005 was…”
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Surface treatment systems for concrete in marine environment: Effect of concrete cover thickness by Medeiros, Marcelo Henrique Farias de, Pereira, Eduardo, Quarcioni, Valdecir Angelo, Helene, Paulo Roberto do Lago

“…Abstract There are some ways to extend the service life of a reinforced concrete structure. This paper focuses on the extension of the service life by treating…”
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Concrete surface electrical resistivity: Effects of sample size, geometry, probe spacing and SCMs by Cunha Araújo, Emanoel, Macioski, Gustavo, Henrique Farias de Medeiros, Marcelo

“…•Ø100·200 mm, Ø150·300 mm and 250·250·250 mm presented decreasing values of SER;•50 mm probe spacing showed higher SER values than 35 mm spacing;•10% RHA…”
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Biogenic sulfur attack in a reinforced concrete sewage treatment plant. Re-visited mechanism and rehabilitation proposal by Pereira Godinho, Jayson, de Medeiros, Marcelo Henrique Farias

“…[Display omitted] •The reinforced concrete has been exposed to acid attack for 20 years.•Several exposed and heavily corroded reinforcements have been…”
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Effect of aggregate contamination with pyrite on reinforcement corrosion in concrete by Capraro, Ana Paula Brandão, Macioski, Gustavo, de Medeiros, Marcelo Henrique Farias

“…•Concretes with 5.0% of SO3 prevented the formation of the rebar passivating film.•Pyrite contamination induced low corrosion potential and high current…”
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Influence of the cement type and water/cement ratio in concretes exposed in sewage treatment plants by Capraro, Ana Paula Brandão, Cheremeta, Marcos Antonio, Gonçalves, Marcos Paulo Galvão, Cremonez, Claiton, de Medeiros, Marcelo Henrique Farias

“…•Chemical, physical and mechanical properties of produced specimens were evaluated.•A year of exposure was enough to identify mechanisms of gases attack.•The…”
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The influence of fly ash and neutral sodium silicate on concretes submitted to sulfuric acid attack by da Silva Munhoz, Guilherme, Edilson Gomes Dobrovolski, Mateus, Leandro Nenevê, Bruno, Luiz Dias, Roberto, Pereira Godinho, Jayson, Henrique Farias de Medeiros, Marcelo

“…•Wastewater treatment plants are subjected to H2SO4 attack due to biogenic corrosion.•The sulfuric acid attack is decelerated in samples with high calcium…”
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Study of SiO2/Al2O3 and CaO/SiO2 relationships in alkali-activated cements by Frare, Andreza, Luz, Caroline Angulski da, Medeiros, Marcelo Henrique Farias de, Pereira Filho, José Ilo

“…Abstract This study investigates alkali-activated cements (AAC), comprising blast furnace slag (BFS) along with industrial by-products like rice husk ash (RHA)…”
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Strain, natural frequency, damping coefficient and elastic modulus of mortar beams determined by fiber Bragg grating (FBG) sensors by Macioski, Gustavo, Oliveira, Valmir de, Medeiros, Marcelo Henrique Farias de

“…Abstract Structural health monitoring can detect anomalies in time, allowing the implementation of more efficient maintenance and repair actions in special…”
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Evaluation of external sulfate attack (Na2SO4 and MgSO4): Portland cement mortars containing siliceous supplementary cementitious materials by Souza, Diego Jesus de, Medeiros, Marcelo Henrique Farias de, Hoppe Filho, Juarez

“…Sulfate attack is a term used to describe a series of chemical reactions between sulfate ions and hydrated compounds of the hardened cement paste. The present…”
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Rice husk ash as supplementary cementing material to inhibit the alkali-silica reaction in mortars by Langaro, Eloise Aparecida, Santos, Cleberson Adorno dos, Medeiros, Marcelo Henrique Farias de, Jesus, Diego Souza de, Pereira, Eduardo

“…Alkali-silica reaction (ASR) is one of the most harmful distress mechanisms that affects the durability of concrete worldwide. Yet, it has been found that…”
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Application of the Analytic Hierarchy Process (AHP) to select high performance concretes by Pinto, Sabrina Requião, Bem, Diogo Henrique de, Rebmann, Markus Samuel, Medeiros, Marcelo Henrique Farias de

“…Abstract This paper describes an application of the Analytic Hierarchy Process (AHP) to choose the best cement type and mixture for the production of high…”
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Atividade pozolânica da sílica ativa: análise em pastas cimentícias com diferentes teores de substituição by Amaral, Marcella, Macioski, Gustavo, Medeiros, Marcelo Henrique Farias de

“…RESUMO A utilização de adições pozolânicas de elevada reatividade, como a sílica ativa, vem sendo amplamente estudada com o intuito de consolidar a sua…”
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Atividade pozolânica de adições minerais para cimento Portland (Parte I): Índice de atividade pozolânica (IAP) com cal, difração de raios-X (DRX), termogravimetria (TG/DTG) e Chapelle modificado by Hoppe Filho, Juarez, Gobbi, Andressa, Pereira, Eduardo, Quarcioni, Valdecir Angelo, Medeiros, Marcelo Henrique Farias de

“…RESUMO A seleção de adição mineral pozolânica para compor a matriz de cimento Portland requer determinação prévia de sua reatividade, o que é realizado…”
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Environmental certification for habitations: comparison between LEED for Homes, Aqua Process and "Selo Casa Azul" by Grünberg, Paula Regina Mendes, de, Marcelo Henrique Farias, Tavares, Sergio Fernando

“…In order to encourage changes in the construction industry for adequation to sustainability schedule, green certification systems for buildings were developed…”
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Atividade pozolânica de adições minerais para cimento Portland (Parte II): Índice de atividade pozolânica com cimento Portland (IAP), difração de raios-X (DRX) e termogravimetria (TG/DtG) by Hoppe Filho, Juarez, Gobbi, Andressa, Pereira, Eduardo, Tanaka, Rodrigo Satoshi, Medeiros, Marcelo Henrique Farias de

“…RESUMO A hierarquização de adição mineral para utilização como pozolana requer a determinação de sua reatividade, o que pode ser realizado via método indireto,…”
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Resíduo de cerâmica vermelha e fíler calcário em compósito de cimento Portland: efeito no ataque por sulfatos e na reação álcali-sílica by Medeiros, Marcelo Henrique Farias de, Souza, Diego Jesus, Hoppe Filho, Juarez, Adorno, Cleberson S., Quarcioni, Valdecir Angelo, Pereira, Eduardo

“…RESUMO O resíduo de cerâmica vermelha (RCV) proveniente de blocos e tijolos é gerado na produção destes artefatos e na indústria da construção civil, quando da…”
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Formation of incipient anodes in localized mortar repairs with the addition of rice husk silica by Remenche, Igor Rossi, Daschevi, Paulo Augusto, Holowka, Nikolai Franceschetto, Martioli, Leonardo Caniato, Farias de Medeiros, Marcelo Henrique

“…The objective of this work was to investigate how incipient anodes can be detected and monitored in localized repair areas using mortars with added rice husk…”
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Influência da sílica ativa e do metacaulim na velocidade de carbonatação do concreto: relação com resistência, absorção e relação a/c by Marcelo Henrique Farias de Medeiros, Janderson William Raisdorfer, Juarez Hoppe Filho

“…Resumo A sílica ativa e o metacaulim são adições de elevada reatividade que podem ser usadas como substituição parcial do cimento ou como simples adição,…”
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Compósitos de cimento Portland com adição de nanotubos de carbono (NTC): Propriedades no estado fresco e resistência à compressão by Medeiros, Marcelo Henrique Farias de, Dranka, Francielle, Mattana, Alécio Júnior, Costa, Marienne do Rocio de Mello Maron da

“…Alguns estudos têm sido desenvolvidos sobre a adição de nanotubos de carbono (NTCs) em compósitos cimentícios e indicam melhorias nas propriedades mecânicas,…”
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