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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 ...
Características de durabilidade de concretos com cinza volante e cinza de casca de arroz com e sem beneficiamento
(Universidade Federal de Santa Maria, 2011-01-27)
The construction industry has been studying the possibility of using industrial subproducts, as a strategy to remedy the environmental matters, considering that the
sub-products are generated in large quantities and mostly ...
Microestrutura e durabilidade a cloretos de protótipos de concreto com cinza de casca de arroz com e sem moagem prévia
(Universidade Federal de Santa Maria, 2013-02-27)
Cement is the main component of concrete, which is the second most common
material used by man. The cement manufacturing process is largely responsible for
the emission of carbon dioxide in the atmosphere. The construction ...
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 ...
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, ...
Carbonatação acelerada em concretos compostos com cinza de casca de arroz de diferentes teores de carbono grafítico
(Universidade Federal de Santa Maria, 2014-02-28)
Carbonation is a natural phenomenon observed in carbon structures, and it is a result of the combined presence of CO2 in the environment and moisture. Carbonation may lower the pH of the concrete to such an extent that the ...
Penetração de cloretos em concretos compostos com cinza de casca de arroz de diferentes teores de carbono grafítico
(Universidade Federal de Santa Maria, 2013-10-10)
In addition to compressive strength, durability is an important variable to be
taken into account in the mix design of concrete. Concrete must be able to withstand
the action of aggressive agents and function as a ...
Comportamento mecânico de concretos com substituição parcial de cinza de casca de arroz e adição de fibras de aço em altas temperaturas
(Universidade Federal de Santa Maria, 2020-01-09)
The incorporation of rice hush ash (RHA) into concrete create benefits for its durability in usual situations, because it leads to the refinement of the pore structure. However, on unusual situations, such as a fire, the ...
Absorção capilar e resistividade elétrica de concretos compostos com cinza de casca de arroz de diferentes teores de carbono grafítico
(Universidade Federal de Santa Maria, 2011-12-15)
There are constant searches for alternatives to reduce the environmental impact in
the production of in consumables, like concrete, that is actually a pollutant. Mineral
additions have been investigated as partial ...
Análise microestrutural de concretos com substituição parcial de cinza de casca de arroz em altas temperaturas
(Universidade Federal de Santa Maria, 2021-01-21)
The usage of supplementary cementitious materials, such as rice husk ash (RHA), as a partial replacement of Portland cement is commonly studied and at room temperature may provide mechanical strength and durability to ...