O presente estudo tem como objetivo analisar as rotas de escoamento e a influência do frete do transporte de calcário produzido pela mineradora Minerax em Xambioá-TO. Para fundamentação do estudo foi realizada uma pesquisa bibliográfica sobre os temas logística, transporte e custos de transporte, bem como descrição dos modais de transporte de minério no Tocantins. A pesquisa se trata de um estudo de caso, utilizando como método científico a pesquisa exploratória, descritiva de natureza qualitativa. Utilizou-se como instrumento de coleta de dados roteiros de entrevistas semiestruturas aos gestores da empresa Minerax e da prestadora de serviço de transporte. Os dados são apresentados em forma de tabelas e gráficos, seguidos das análises devidas. Os resultados mostraram que as rotas de escoamento da produção de calcário necessitam de investimentos e melhorias e que a forma de frete tabelado, utilizado pela a prestadora de serviço de transporte, não é o mais indicado para escoamento de minério a distâncias acima de 300 km. A partir da equação proposta pelo trabalho foi observado que o frete melhor dimensionado possibilita um resultado operacional mais vantajoso para a empresa e um preço mais baixo para o cliente.
The study aimed to produce biodegradable composite materials from sugar cane straw and castor oil-based resin. The fibers were used in two sizes: 0 <fibers ≤4.27mm and 4.27 <fibers <10mm; resin in the proportion of 10%, 15% and 20%. The preparation method was carried out according to NBR 14810-2: 2018, using the compression molding technique at room temperature. Physical assays were carried out: moisture and swelling; mechanical assays: static bending and compression. The morphological assay was evaluated: scanning electron microscopy; and the composite biodegradability assay, over a three-month period. In order to validate the results, the statistic graphic was performed with significance at 5% by the F test, compared to the means by the Scott-knott test of the physical and mechanical treatments. The results showed that the values of the physical assays have met the minimum limits established by the standard, resulting in 8.72% swelling of the composite material. In the mechanical assay, the composite with less fiber and 20% resin was more resistant in the bend test with a capacity of 3.69 N/mm², and in the compression assay with 2.98 N/mm². The morphological analysis showed a wide interaction at the matrix/reinforcement interface. The biodegradation assay showed that over the months the composites started to lose weight, which shows the improvement of the degradation. Therefore, the composite produced has great potential in the market, it is considered biodegradable and of low cost compared to composites produced from synthetic fibers.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.