Concrete Quality Control
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. PRICE AND QUALITY OF COFFEE (COFFEA ARABICA L.) DRIED USING AIR DEHUMIDIFIED BY CONVECTION
ABSTRACT Grain drying processes have been improved to reduce costs and losses of coffee beverage quality. The objectives of this study were to evaluate the quality of coffee dried using air partially dehumidified before entering drying units (DUs) in four coffee-producing farms, as well as the effects of such process on coffee commercial value. The method co
Eng. Agríc.. Publicado em: 04/11/2019
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2. Uma abordagem experimental e numérica para determinação de curvas de compressão para concreto simples e reforçados com fibras de aço
RESUMO A curva tensão-deformação do concreto é importante para o dimensionamento de estruturas, pois por meio dela é possível obter sua resistência à compressão, sua deformação de pico, o módulo de elasticidade e a tenacidade do concreto. Entretanto, essa é uma propriedade que não é comumente determinada nos ensaios de controle de qualidade do
Matéria (Rio J.). Publicado em: 16/09/2019
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3. ESTUDO DE UM REATOR SOLAR HÍBRIDO PARA CURA ACELERADA DO CONCRETO EM ÁGUA MORNA. / STUDY OF A HYBRID SOLAR REACTOR FOR ACCELERATED CURING OF CONCRETE IN WARM WATER.
The Portland cement concrete material is the most consumed after the water worldwide due to their versatility molding, strength and durability as a structural material. The curing is the procedure that aims to keep the concrete saturated with water in their early ages and it is essential to ensure the reactions of cement hydration, promoting its consolidatio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/11/2012
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4. Práticas de gerenciamento de projetos de escopo e tempo nas perspectivas das abordagens ágil e tradicional / Scope and time practices for project management in the perspective of agile and traditional approaches
The theory of project management (PM) has been target of propositions new approaches such as agile project management (APM), resulting in practices, techniques and tools, still little identified and characterized as their use. There aren\ t precise definitions and instruments which can distinguish the use of problems such as lack of identification classifica
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/06/2012
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5. Desenvolvimento de método para medida de permeabilidade superficial de revestimentos de argamassa. / Development of method for measuring the surface permeability of coating mortar.
The phenomenon of permeability refers to the ability with which a fluid is transported through a porous medium, driven by pressure gradient between the material and the external environment. Degradation agents are conducted to the interior of mortar and concrete driven through such a phenomenon. Therefore, it is the permeability as a key parameters for durab
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/05/2011
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6. Análise de blocos estruturais de concreto utilizando a técnica da ultrassonografia
The use of non-destructive testing (NDT) inspection and ultrasound evaluation of physical and mechanical properties of concrete has been in recent years, the subject of advanced studies both in academia and in science. This technique, known more and more, gaining new fans and greater reliability along the production chain of Construction, focused only on ins
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/02/2011
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7. Análise tipológica de elementos e sistemas construtivos pré-moldados de concreto do ponto de vista de sensibilidade a vibrações em serviço / Typological analysis of precast concrete elements and building systems in terms of sensitivity to vibration in service
In the context of construction modernization, the application of precast concrete elements offers a good and reliable alternative in the construction strategy, among them large spans, fast assembly, lightweightness and excellent structural members quality. Dealing about dynamic behavior of concrete structures, precast elements are subjected to several loadin
Publicado em: 2010
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8. A promoção de qualidade de vida para os trabalhadores: discurso, poder e disciplina / The promotion of quality of life for workers: discourse, power and discipline
This research was started on issues raised during the observation of events and trainings related to the promotion of quality of life for workers. Our goal is to reflect upon discourses about QWL and how it aims to create subjects, which disciplinary mechanisms it uses and how workers reinterpret these discourses. Based in Foucaults archaeological method, we
Publicado em: 2010
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9. Proposta de limites para monitoramento da qualidade do concreto
Neste artigo propõe-se a utilização do CEP para o monitoramento da qualidade do concreto utilizado na construção civil e discute-se sobre o atual parâmetro utilizado para avaliar a qualidade daquele insumo. Dentre as várias características que determinam a qualidade do concreto foca-se na sua resistência à compressão que, usualmente, é visualizad
Publicado em: 2010
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10. Contribuição ao controle tecnológico de concretos estruturais de cimento Portland em ambientes marítimos. / Contribution to field quality control of Portland cement structural concretes in maritime environments.
A durabilidade dos edifícios em concreto armado só pode ser alcançada se for atendido um conjunto de requisitos e critérios nas etapas de projeto, execução e manutenção, nas quais os materiais envolvidos precisam ser adequadamente especificados, produzidos e empregados, de acordo com as respectivas rotinas dessas etapas. Assim, o requisito genérico
Publicado em: 2010
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11. Correlating slump, slump flow, vebe and flow tests to rheological parameters of high-performance concrete
Conventional single-point workability tests continue to be used for specification and quality control of concrete despite their inherent limitations. These tests cannot characterize workability of concrete in terms of fundamental rheological parameters. Attempt has therefore been made to correlate slump, slump flow, slump flow time, percent flow and Vebe tim
Materials Research. Publicado em: 2009-03
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12. Aspectos executivos e a qualidade de estruturas em concreto armado : estudo de caso
The execution of reinforced concrete structures is a construction stage that has significant importance in the overall context of a work and involves materials, suppliers, work fronts in the workplace and a large number of professionals. In this stage many problems may occur: inadequate use of materials, misinterpretation of the project, incorrect use of equ
Publicado em: 2009