White Concrete
Mostrando 1-11 de 11 artigos, teses e dissertações.
-
1. Estudo sobre a influência da adição de pigmentos em propriedades de durabilidade e na cromacidade do concreto de cimento Portland branco / A study about the influence of the pigments addition in the durability properties and chromaticity of white Portland cement concrete
Sob o ponto de vista de durabilidade, os concretos cromáticos merecem atenção especial, não apenas pelas suas propriedades físicas e químicas, mas principalmente pela sua utilização como elemento arquitetônico, o qual permite a confecção de elementos estruturais aparentes, deixando-os assim mais suscetíveis à ação destrutiva das intempéries.
Publicado em: 2009
-
2. Renovação Carismática Crioula: uma leitura do papel do animador litúrgico na Renovação Carismática Católica em Juiz de Fora sob a luz de Sacrosanctum Concilium 37-39
This dissertation aims to investigate the mechanisms of liturgical adaptation happening on the Roman Catholic Church in Brazil using a punctual investigation of the Commentator (or Animator) liturgical function on the location of Juiz de Fora MG, inserted on the ecclesial context known as Renovação Carismática Católica (a local translation and adaptation
Publicado em: 2009
-
3. Analysis of the relative rib area of reinforcing bars pull out tests
The good performance of reinforced concrete structures is ensured by the transfer of stress linking a reinforcing bar and the surrounding concrete. The bond steel-concrete is a very complex phenomenon. This paper presents the experimental results of a program with specimens used in the pull out test with concrete strength of 20, 40, 60, 80 and 100 MPa and fo
Materials Research. Publicado em: 2008-12
-
4. CARBONATION AND CAPILLARY ABSORPTION IN CONCRETES OF WHITE PORTLAND CEMENT WITH HIGH CONTENTS OF BLAST FURNACE SLAG AND CHEMICAL ACTIVATORS / CARBONATAÇÃO E ABSORÇÃO CAPILAR EM CONCRETOS DE CIMENTO PORTLAND BRANCO COM ALTOS TEORES DE ADIÇÃO DE ESCÓRIA DE ALTO FORNO E ATIVADOR QUÍMICO
The carbonation phenomenon, reaction between CO2 from the atmosphere in the presence of humidity with the Portland cement hydration products, induces pH reduction to levels that can cause the elimination of steels protective layer, enabling the corrosion mechanism of the steel structure to start.. This is one of the main pathologies in the reinforced concret
Publicado em: 2008
-
5. RESISTIVIDADE ELÉTRICA DE CONCRETOS DE CIMENTO PORTLAND BRANCO E ELEVADOS TEORES DE ESCÓRIA DE ALTO FORNO / ELECTRICAL RESISTIVITY OF WHITE PORTLAND CEMENT CONCRETES AND HIGH BLAST FURNACE SLAG CONTENT
The electrical resistivity is an important concrete property that allows evaluating the access facility of aggressive agents before the corrosion process begins and estimates the velocity of the same process after it begun. The electrical resistivity and the oxygen availability are the characteristics that control the corrosion velocity. This work aimed to e
Publicado em: 2008
-
6. Penetração de cloretos em concretos compostos com cimento Portland branco e escória de alto forno, ativados quimicamente / Chloride ion penetration in concretes with white Portland cement and blast furnace slag, chemically activated
The consumption of white Portland cement (WPC), in structural concretes, has been growing lately. Thus, targeting diffuse its use, and confirm its quality and durability as structural cement, this work has the aimed to investigate the effect of concretes compounds with WPC, slag and chemical activator (Na2SO4), on its behavior against chloride ion penetratio
Publicado em: 2008
-
7. A presença/ausência da cobertura à população rural pelo SUAS Sistema Único de Assistência Social: os casos das cidades de Londrina/PR e do Vale do Paraíba/SP
This study makes the analysis of the policy of social welfare in rural areas of the cities of Jacareí and Santa White located in the Vale do Paraíba - SP and the city of Londrina - PR, with the goal of identifying the scope of action of SUAS - Single System of Social Assistance in rural areas, paths cover by the municipal administrations in relation to: di
Publicado em: 2008
-
8. Ladrilhos e revestimentos hidráulicos de alto desempenho / High performance hydraulic tiles and coverings
The hydraulic tiles are coverings produced by using hydraulic binders, whose production technology has not follow the great technological evolution of the concretes, the availabilities of new materials and the usual techniques in recent years, thus they have lost space and competition in the market due to their handicraft characteristic of production. This w
Publicado em: 2007
-
9. Estruturas de concreto arquitetônico - Projeto, execuções e recebimento / Arquitectural concrete structures - Project, Execution and Receiving
O uso do concreto como elemento arquitetônico é uma ferramenta antiga, muito utilizada nos projetos arquitetônicos desde a Roma antiga, passando pela era modernista e chegando aos dias atuais. Porém, com o desenvolvimento de novos materiais e técnicas, nosso simples concreto, apenas cinza, pode gerar infinitas cores e texturas; No Brasil, mesmo com uma
Publicado em: 2006
-
10. Solar Disinfection Evaluation and its Social Viability at State of Ceará, Brazil / Avaliação do Processo de Desinfecção Solar (SODIS) e de sua Viabilidade Social no Estado do Ceará
Despite the importance of sanitation for well-being of the mankind and the natural resources conservation, still today a large number of people do not have access to wastewater system neither to public water supply. One technique which has being studied and applied in developing countries as a safe household water treatment method is solar disinfection, SODI
Publicado em: 2006
-
11. Rice hull-derived silica: applications in Portland cement and mullite whiskers
Silica was extracted from rice hulls by three processing routes, starting with acid treatment followed by burning and milling. The amorphous white silica powder showed a surface area of 260 to 480 m²/g, purity above 99% and average particle size of 2.0 to 0.6 mm. This silica is suitable for the preparation of mullite whiskers employing the rare earth alumin
Materials Research. Publicado em: 2000-04