Capillarity
Mostrando 1-12 de 49 artigos, teses e dissertações.
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1. Study about concrete with recycled expanded polystyrene
Resumo O concreto leve obtido com adição de partículas de poliestireno expandido (EPS) é conhecido como concreto com EPS. Estudaram-se neste trabalho as propriedades de concretos com adição de EPS para uso em paredes estruturais. O EPS por ser um material produzido em larga escala e possuir baixa densidade, produz um grande volume de resíduos. Esses r
Rev. IBRACON Estrut. Mater.. Publicado em: 13/12/2019
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2. PHYSICAL, MECHANICAL AND THERMAL BEHAVIOUR OF ADOBE STABILIZED WITH THE SLUDGE OF WASTEWATER TREATMENT PLANTS
ABSTRACT The need for treated water is essential for life. With the constant increase in population, the most common way to purify surface water is through conventional water treatment plants (WTPs). The high volume of residue (sludge) generated in this process is most often returned to the catchment site, negatively affecting the ecosystem. The sludge of WT
Eng. Agríc.. Publicado em: 09/12/2019
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3. Avaliação do comportamento de estanqueidade à água de argamassas e hidrorrepelentes – Parte II
RESUMO Além da função estética, os revestimentos de fachada protegem as edificações da penetração de água e, consequentemente, diminuem a propensão ao surgimento de manifestações patológicas que levariam à degradação da superfície. Este trabalho apresenta os ensaios de avaliação do comportamento de estanqueidade à água de revestimentos a
Matéria (Rio J.). Publicado em: 25/11/2019
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4. Estudo das propriedades de concretos com adição de fibras vegetais e de polipropileno para uso em paredes estruturais
RESUMO Estudou-se neste trabalho as propriedades de concretos com adição de fibras vegetais (sisal e rami) e de polipropileno para uso em paredes estruturais. Realizou-se uma comparação do desempenho do concreto com a adição de fibras vegetais e de fibra de polipropileno, a fim de se verificar a possível substituição. Foram avaliadas a retração po
Matéria (Rio J.). Publicado em: 10/06/2019
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5. PHYSICAL, MECHANICAL AND THERMAL BEHAVIOR OF ADOBE STABILIZED WITH “SYNTHETIC TERMITE SALIVA”
ABSTRACT Adobe is an efficient construction material for several reasons, such as its thermal comfort, sustainability, and lower energy cost, as well as the simplicity of its production and execution. However, challenges such as water absorption, capillarity, and compressive strength should be investigated to improve its physical and mechanical properties. �
Eng. Agríc.. Publicado em: 25/04/2019
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6. LEACHING OF COARSE CALICHE ORE. EXPERIMENT AND MODELLING
Abstract Heap leaching of caliche ores is frequently performed with run-of-mine (ROM) material, which includes rocks of very different sizes; however, most of the experimental data are obtained using small particles. To contribute to the understanding of caliche leaching, an experiment using coarse particles was carried out. The recoveries obtained from this
Braz. J. Chem. Eng.. Publicado em: 2016-03
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7. Durability Enhancement Of SCC With Waste Glass Powder
Self compacting concrete (SCC) requires a large quantity of fine materials compared to common concrete. In this work waste glass powder was used to replace (50%) of filler required. Two types of SCC were manufactured, a control SCC type (CTL) using cement and limestone filler and another with glass powder replacing 50% of the filler. Mechanical and durabilit
Mat. Res.. Publicado em: 19/02/2016
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8. INFLUÊNCIA DO CONTEÚDO DE XILANAS NA BRANQUEABILIDADE, PROPRIEDADES HIGROSCÓPICAS, FISICO-MECÂNICAS E ÓPTICA DE POLPAS BRANQUEADAS DE EUCALIPTO
Bleached eucalypt kraft pulps are widely used in print and writing (P&W) and tissue paper manufacture. Among the quality requirements of pulp for these papers, xylan content has been controversial. The objective of this study was to evaluate the influence of xylan content on bleachability, hygroscopic, physic-mechanical and optical properties of the pulp. In
Quím. Nova. Publicado em: 2015-02
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9. Using fine recycled concrete aggregate for mortar production
This research assessed the performance of mortars in which recycled concrete aggregates (RCA) was a component. It replaced natural sand but kept the same particle size distribution. Three mortars were produced with replacement ratios of 20%, 50% and 100% as well as a reference mortar containing no recycled aggregate. The compressive and flexural strength, wa
Mat. Res.. Publicado em: 08/10/2013
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10. Estimativa de propriedades hidráulicas de solos a partir do ensaio de ascensão capilar / Estimating the hydraulic properties of soils from capillary rise test
This study evaluates the potential of capillary rise test and a parameter optimization technique to estimate soil hydraulic parameters. The capillary rise is a simple and expedite test that is conditioned by soil hydraulic properties. In the mathematical representation of the capillary rise we used the model of Terzaghi (1943), who considered that saturated
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2012
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11. Distribution strategies for the base of the pyramid : an exploratory study in Brazil
Access has been one of the main difficulties companies have faced in emerging markets (PRAHALAD, 2005). The capillarity of the market, the existence of small, not professionalized and sometimes informal retailers, the lack of infrastructure and high transportation costs are some of the distribution challenges companies face in poorer regions. The literature
Publicado em: 24/02/2010
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12. Comparative properties of the steam permeability, capillarity and ultraviolet protection in knits of polyamide 6.6 and polyester for physical activity / Comparativo das propriedades de permeabilidade ao vapor, capilaridade e proteção ultravioleta em tecidos de poliamida 6.6 e poliester em tecido de malha para atividade fisica
Vários estudos têm sido realizados, sobretudo na última década, analisando artigos têxteis de diferentes fibras quanto ao desempenho em relação ao conforto. Porém são raros os que tratam das malhas sintéticas de microfibras em misturas com elastano, notadamente aquelas produzidas em máquinas finas (36-38 agulhas por polegada). Essas malhas têm al
Publicado em: 2010