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Resistividade elétrica de concretos de cimento Portland branco e elevados teores de escória de alto forno
(Universidade Federal de Santa Maria, 2008-03-03)
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. ...
Resistividade elétrica de concretos com diferentes teores de escória de alto forno e ativador químico
(Universidade Federal de Santa Maria, 2005-12-15)
The integrity of the rebars in reinforced concrete structures is related to the chemical and physical protection provided by the concrete layer that covers the steel. The destruction of the passivation layer precedes the ...
Resistividade elétrica de concretos contendo diferentes teores de cinza de casca de arroz
(Universidade Federal de Santa Maria, 2005-10-21)
The durability of reinforced concrete structures derives from the protective effect provided by the concrete cover over the steel rebars. When the passivation of the steel is compromised, the whole structure is liable to ...
Estudo da utilização de cinza da casca do arroz residual em concretos estruturais: uma análise da durabilidade aos cloretos
(Universidade Federal de Santa Maria, 2008-03-27)
The use of residues, as the rice husk ash (RHA) in the concrete s production reduces the environmental impact caused in its productive chain. It means fewer energy s
consumption, fewer natural resources waste, less ...
Estudo da microestrutura da camada de cobrimento de concreto com altos teores de cinza volante
(Universidade Federal de Santa Maria, 2004-02-27)
The increase in the durability of the concrete structures causes greater useful life of the same ones, influencing directly in the improvement of the constructions and the quality of life of the inhabitants. So that a ...
Estudo da microestrutura do concreto com adição de cinza de casca de arroz residual sem beneficiamento
(Universidade Federal de Santa Maria, 2008-05-07)
The use of mineral adition in concrete is a widely studied theme for several researchers that looking for features
like: save cement for reducing costs, durability improvement to increase mechanical strenght and use ...
Efeitos nas propriedades mecânicas, elásticas e de deformação em concretos com altos teores de escória e cinza volante
(Universidade Federal de Santa Maria, 2009-03-12)
The use of byproducts and industrial waste as pozzolanic, is an alternative to achieve the sustainability, economy and durability in concrete structures. This survey has as its purpose to analyze the effect on mechanical, ...
Carbonatação da camada de cobrimento de protótipos de concreto com cinza volante e cal
(Universidade Federal de Santa Maria, 2005-03-01)
When the armed concrete of the point of view of the durability is observed, observes heterogeneous zone from mold, known as cover concrete that possess distinct characteristics of the zones deepest of the structural parts. ...
Propriedades mecânicas e retração do concreto com adição de cinza de casca de arroz natural, sem beneficiamento de moagem
(Universidade Federal de Santa Maria, 2009-02-28)
To present research has for objective investigate the technical feasibility of the job of rice husk ask ungrounded, in concretes for structural ends. This study tries the mechanical properties of axial compression strength, ...
Percolação de água em concretos com elevados teores de escoria e cinza volante com adição de cal
(Universidade Federal de Santa Maria, 2007-04-26)
The study of concrete structures durability necessarily passes by the study of covercrete and by the understanding of the factors that affect the features of this superficial layer. The use of high contents of mineral ...