Análise de misturas solo-agregado reciclados de resíduos sólidos da construção civil, para fins de pavimentação de vias urbanas de baixo volume de tráfego

This work deals with the continuation of Scientific Initiation research initiated by Tamura (2012), which draws up a mixture of soil and recycled aggregate analysis for paving of low traffic volume roads using local materials from the Vale do Paraíba region. The main steps of the process were the soil and recycled aggregate characterization, along with grading tests and California Bearing Ratio (CBR) applied to the soil, the recycled aggregate and the mixture of soil and recycled aggregate; aiming their use as base and sub-base in paving urban roads. The results are discussed, emphasizing the mechanical behavior. The current results are compared with the results of IC Tamura research, taking decisions over this job to the final product best result. For a greater understanding of the work in general were described paving, its structure, its components and its physical behavior. It has been intended to emphasize the importance of the mixture of soil and recycled aggregate to meet the quality requirements and compliance with the specifications of current technical standards, in the context of durability, natural materials economy, decreases volume in landfills and cost reduction

Avaliação de lubrificantes para aplicação em componentes mecânicos pelo método de compressão do anel

The current lubricants are getting better with advancing technology and more specific to each case of application. Its use is directly linked to the level of waste by friction generated between objects in direct contact and it is essential to promote greater durability of mechanical components. This study refers to behavioral assessment of some types of lubricants and rank among them which one presents the lowest friction between metal components. For this work, will be used the method of ring compression test (RCT), after performed tests and analyzed the results, will be possible to report which lubricant will bring the best reduction in friction. The need for this work was given initially by the observation that some mechanical projects developed at FEG does not conduct in-depth studies the lubricants used. Therefore this study aims to provide better support to these projects. In this work were used five different lubricants, three oils and two greases.