203 resultados para Argamassa de Revestimento


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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Agronomia - FCAV

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Pós-graduação em Engenharia Mecânica - FEG

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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A Formação Corumbataí é atualmente utilizada com sucesso pela indústria de revestimento cerâmico no pólo de cerâmica de Santa Gertrudes. Este engloba os municípios de Santa Gertrudes, Rio Claro, Cordeirópolis, Limeira, Piracicaba e Araras. De acordo com os estudos geológicos realizados, as argilas da Formação Corumbataí foram divididas em cinco litofácies cerâmicas, sendo elas: maciça, laminada, intercalada I, intercalada II e alterada. De acordo com suas características químicas, são consideradas como argilas com teores médios de elementos fundentes, com os valores da soma dos óxidos alcalinos (Na2O + K2O) variando de 2,9% na litofácies alterada até valores de 4,3% na litofácies intercalada I. Os argilominerais predominantes são a illita e a caulinita (presentes em todas as litofácies), além da montmorillonita que ocorre com freqüência nas litofácies intercalada I e II e laminada. Outros minerais importantes são: quartzo, feldspato do tipo albita, hematita e calcita. Os resultados cerâmicos possibilitaram enquadrar as litofácies cerâmicas dentro do Grupo BIIb na Classificação de Revestimentos Cerâmicos (BII – valores de resistência à flexão da ordem de 180-300 Kgf/cm2; b – valores de absorção de água (Abs) de 6 a 10%), porém, alguns valores de Abs ficaram acima de 10% nas litofácies intercalada I, intercalada II e na alterada.

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The adoption of management practices that reduce water losses is essential to conserve moisture and improve soil temperature, especially in arid and semiarid environments of the Brazilian Northeast, characterized by high evapotranspiration and the adoption of irrigation with saline water, which harms growth and yield of commercial crops. Given these factories, an experiment was conducted in Nova Floresta, Paraiba, from August 2010 to February 2011 in Oxisoil, in order to evaluate the production of bell pepper and soil moisture in grooves with side trim, and application of biofertilizer and mulch cattle. The experimental design was randomized blocks with four replications using a factorial 2 x 2 x 2 for the ground beef with and without biofertilizer, with and without residues of sisal fiber (Agave sisalana), with and without the side facing the grooves, to reduce lateral water losses by infiltration of water with polyethylene plastic film. From the results, the lining of the lateral grooves provided higher values of soil moisture, number of fruits, fruit mass, plant production and productivity, bell pepper plants. It was also found that the combination of biofertilizer and mulch the ground beef remained wetter in the first 15 cm depth.

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Pós-graduação em Engenharia Civil e Ambiental - FEB

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Industrial activity is growing at an increasingly rapid accelerated bringing impacts not very consistent with the preservation of the environment, since it uses its resources to meet its countless demands, making the sources begin to become increasingly scarce. Therefore, this paper proposes the use of waste a furniture industry for the production of panels for the interior decoration. Were used to manufacture them, two different types of materials, where such, the Kraft paper is more efficient for the underpinnings of these panels. Regarding the type of glue used, the contact yielded better results. The initial conditions for the development of such a proposal were based on existing laws for solid waste as well as proposals for environmental agencies

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Being the corrosion one of the great problems facing the industry today, specifically the internal corrosion of pipes in chemical and petrochemical industries, hence this work proposes a new type of internal coating in order to avoid fouling and decrease the pressure loss in the flow. For this, we use a composition of vinyl ester resins and manometric loads, which after cleaning and preparation of the internal surface of the tube will be applied through a process of centrifugation, adjusted by a lathe. After curing the resin, a test of roughness will be realized in order to analyze the reduction of friction factor and thus be able to conclude whether there was a significant decrease in pressure drop. With test results in hand, we hope to obtain a coating that meets most of the properties required by the industry and to provide a reduction in operating costs and a visible improvement in the conditions of use of the pipe

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The main purpose of this research is to raise, through lab rehearsals, the geometric properties of some oxisols from the region of Vale do Paraíba as well as comparing them to demands prescribed by Technical Specifications ESP08/05 of the Road Department of the State of Paraná, for sub-base or fine grained lateritic soil base (SAFL) and in the Technical Specification ET-DEP00/006 of the Road Department of the State of São Paulo (DER/SP) for subbase or crushed stone base. According to the results that were obtained it will be feasible to appraise the usage of these sorts of soils in structure layers of low-weight traffic pavements