In Brazil, with the ban on the production, sale, and use of chrysotile asbestos, the sector’s industry opted to replace asbestos with CRFS Technology—Cement Reinforced with Synthetic Wire (fiber cement); that is, another product to be disposed of in landfills. This work aimed to determine a composite based on clay, fiber cement powder, and cement that meets the technical specifications of Brazilian soil–cement application standards to contribute to a more sustainable treatment of the future disposal of fiber cement products. With the characterization analysis of the materials, we identified that the clay granulometry is heterogeneous and distributed from 0.1 µm to 25 µm. In comparison, 75% of the fiber cement powder has grains greater than 10 µm. For clay, the liquidity limit is 39.67%, the plasticity limit is 25.01%, and the plasticity index is 14.66%. In the semiquantitative chemical analysis, silicon oxide (SiO2) and calcium oxide (CaO) stood out as the main oxides found, reflected in the mineralogy as quartz and calcium silicate. Therefore, we identified the percentage of organic matter in clay at 2%, using the result of the thermogravimetric analysis. The results described met the normative parameters foreseen for soil–cement applications. That said, the technological characterization was carried out by tests of linear retraction, water absorption, and simple mechanical compression on the specimens made under an axial pressure of 31.2 Mpa in the formulations defined in this work. The formulations with 10% cement and 20% and 30% fiber cement powder are suitable for use in soil–cement bricks, as they have volumetric shrinkage percentages from 2% to 2.5%, water absorption ranging from 18.66% to 19.39%, and simple compressions from 4.25 Mpa to 6.88 Mpa, meeting the requirements of Brazilian standards for soil–cement applications. It is concluded that the results showed that it is possible to produce soil–cement bricks with passive fiber cement products converted into powder, avoiding improper disposal and unwanted environmental impacts.
O presente trabalho buscou propor soluções aos gargalos identificados em um processo produtivo utilizando a ferramenta da qualidade, fluxograma em conjunto com as atividades realizadas pelo Planejamento e Controle da Produção-PCP, tomando como premissa a sua grande importância dentro das organizações. O estudo de caso foi realizado em uma empresa de pequeno porte especializada na fabricação de estofados, localizada no município de Codó-MA. Através do mapeamento do processo produtivo e entrevista com o gestor da área foi possível compreender a sistemática das operações, bem como as principais anomalias relacionadas ao processo de produção. O Planejamento de Recursos Materiais - MRP foi definido como sendo a solução mais viável para minimizar os problemas encontrados. A partir pesquisa tornou possível reconhecer que a aplicação efetiva da ferramenta fluxograma no PCP é capaz de trazer importantes ganhos de oportunidade para a empresa, proporcionando-lhe benefícios, especialmente no melhoramento do processo produtivo para a resolução de problemas e o bom fluxo do mesmo, conferindo-lhe vantagem competitiva frente à concorrência.
É dever do Estado promover o bem comum sem quaisquer formas de discriminação, a fim de que seja cumprida com eficiência a função social da cidade, tendo em vista que tal função constitui-se pela seguridade de que todos gozem de moradia, do lazer, dos serviços públicos e da circulação nas vias. Entretanto, a presença de barreiras impostas por projetos arquitetônicos equivocados ainda é bastante comum nas edificações do país. Assim, assegurar a cidadania e a dignidade de todos os brasileiros resultam vislumbrar no projeto arquitetônico as edificações como instrumentos garantidores do direito de ir e vir. A partir desta perspectiva, essa pesquisa teve por objetivo discutir a acessibilidade como instrumento de inclusão social no ambiente construído, de modo que se evidencie o préstimo de se considerar a acessibilidade universal como direito fundamental. Adotou-se como metodologia de investigação o modelo de pesquisa bibliográfica de natureza qualitativa. Desta forma, foi possível concluir que a garantia de um ambiente acessível é de grande importância para a vida social das pessoas portadoras de necessidades especiais ou com mobilidade reduzida, pois promove qualidade de vida e garante o exercício pleno de sua cidadania.
One of the significant challenges of the ceramics industry is to increase the corrosion resistance of ceramic materials, and the study of this corrosion requires a detailed investigation using several characterization methods, such as the knowledge of technological properties including the absorption, apparent porosity, and mechanical resistance of these ceramic materials. This corrosion resistance can be further improved by using a protective coating on the surface of ceramic materials, such as cashew nut shell liquid (CNSL), which has been used as a green, environmentally friendly corrosion inhibitor. This work investigated the inhibitory action of CNSL on the corrosion of ceramic materials. Clay from the Brazilian Northeast was used in a simulated seawater environment at room temperature for the immersion corrosion test. Sets of prismatic specimens bathed in CNSL were immersed in a corrosive solution and compared with other samples without CNSL immersed in a corrosive environment. At the end of 70 days in corrosive solution, the ceramic specimens without CNSL showed signs of wear on the surface, associated with an average mass loss of 20 mg and an average corrosive rate of 0.017 mm/year. On the other hand, the bodies bathed in CNSL showed no mass loss, reinforcing the potential of CNSL as a protective agent against corrosion.
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