Documentação de convênios

URI permanente desta comunidadehttps://rigalileo.itegam.org.br/handle/123456789/173

Trabalhos ténico-científico oriundos de convênios com universidades para oferta de turmas de mestrado e doutorados no Estado do Amazonas

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Tem arquivos: SimAssunto: search.filters.subject.Quebradinho

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    Avaliação das propriedades mecânicas dos concretos fabricados com agregados graúdos disponíveis em Santarém e região Oeste do Pará
    (Instituto de Tecnologia, 2015) MAIA, Carlos Tadeu Arantes; SOUZA, Paulo Sérgio Lima; QUARESMA, João Nazareno Nonato
    The study evaluated the mechanical properties of concretes produced with three types of coarse aggregates available in Santarém-PA (crushed stone, gravel, and "quebradinho"), using water/cement ratios of 0.74, 0.54, and 0.41. Properties were analyzed in both fresh (slump, cohesion, water demand) and hardened states (compressive strength, tensile strength, modulus of elasticity). Results showed lower water demand with gravel and higher strength with crushed stone. "Quebradinho" offered economic advantages for 20 and 30 MPa concretes. The choice of aggregate directly influences concrete quality and cost.
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    A Caracterização e Resistência do Seixo Fino (Quebradinho) no Município de Santarém - PA
    (Universidade Federal do Pará, 2015) QUEMEL, Laise Deanne Figueira; PICANÇO, Marcelo de Souza
    Civil construction works in Santarém have been using a coarse aggregate popularly called 'quebradinho' in structural concrete. This work aimed to study the resistance of the 'quebradinho' or 'gravel' in natura and washed, proving its efficiency as an aggregate for concrete in buildings and reducing construction costs in the region. Using the ABCP method for resistance proof, the results of physical characterization and mechanical properties of concrete dosed with such aggregates were shown. All molded specimens presented satisfactory results within the compressive strength standards between the 3rd and 28th days. It is concluded that the use of quebradinho is economically viable and effective, although further studies on water absorption and durability are needed.
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    CONCRETOS FABRICADOS COM AGREGADOS GRAÚDOS DISPONÍVEIS EM SANTARÉM E REGIÃO OESTE DO PARÁ
    (Universidade Federal do Pará, 2015) MAIA, Carlos Tadeu Arantes; SOUZA, Paulo Sérgio Lima
    The study examines structural concrete production using different coarse aggregates available in Santarém, analyzing fresh and hardened state properties. Gravel, pebble, and quebradinho were tested with three water/cement ratios (0.74, 0.54, and 0.41). Results showed lower water consumption with pebble and higher final strengths with gravel. A cost analysis highlighted the economic advantage of quebradinho for 20 and 30 MPa concretes. Findings support the feasibility of using local aggregates in concrete production.