The increase in the exploitation of raw materials in the civil construction sector has led to an increase in damage to the environment, mainly due to the improper disposal of granitic waste. However, this fact has caused damage to the environment. Therefore, this research aims to analyze the influence of the introduction of granite waste in a clay matrix aiming its use in the red ceramic industry. For this, the clay from the ceramic pole in the city of Iranduba -AM and granite waste from a company located in the municipality of Presidente Figueiredo -AM were collected. Formulations were made containing three levels of waste (0, 10 and 20% mass) and three firing temperatures (1173, 1273 and 1373K). The materials were characterized by X-ray fluorescence spectroscopy, X-ray diffraction, scanning electron microscopy and the following technological properties were determined: water absorption; linear retraction; apparent porosity; specific mass; and 3-point flexural rupture module. The results showed that the glassy phases generated provide a better densification of the formulations with 20% of waste, sintered at 1373K, as they presented favorable mechanical properties for the manufacture of red ceramic products, providing a correct destination of the waste and providing alternatives for the social, economic context and environmental impact of the Amazon region.
A borracha é um importante material que por desconhecimento de suas propriedades passou muito tempo sem nenhuma utilidade relevante. Após apresentar suas propriedades físicas e mecânicas, passou a estar presente na composição de muitos produtos industriais, principalmente devido a sua capacidade de se recuperar de deformações. Entretanto, entender o comportamento viscoelástico nas mais variadas aplicações e meios é extremamente necessário para melhor aplicação deste produto. Portanto, este trabalho visa discutir a viscoelasticidade do látex por meio de um estudo de artigos encontrados na literatura, buscando entender a relação das variáveis encontradas com os produtos estudados. As publicações foram selecionadas a partir de uma busca nas bases de dados (Revistas CAPES, Scielo e Google Acadêmico) no período de 2017 a 2021. Os resultados culminaram em treze artigos relacionados à propriedade da viscoelasticidade da borracha e, após análise, foi possível verificar que os estudos investigaram o comportamento viscoelástico, destacando que o método de avaliação mais utilizado para obter a resposta viscoelástica foi o reômetro.
Growing environmental issues and the search for alternatives to synthetic fibers have led to the development of composite materials made from natural fibers. Luffa Cylindrica has an important prominence in scientific research due to its properties presenting excellent results for the use of reinforcement in matrices. Therefore, this work aims to analyze the physical, chemical and mechanical properties of bushing fiber based on scientific articles. The publications were selected from a search in the databases, CAPES Periodicals, Scielo and Google Scholar, from 2003 to 2021. Thirty-three works were selected that deal with the properties of Luffa Cylindrica, with twelve articles from the years of 2017 to 2021. It was concluded, with this review, that Luffa Cylindrica encompasses ideal qualities for use as reinforcement of composite materials, as it abundant in nature, low cost and low weight, is non-toxic and has physical and chemical stability.
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