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Estudo da hidratação e microestrutura de pastas de cimento Portland com adição de cinza de casca de arroz de baixo teor de carbono grafítico e sílica ativa
(Universidade Federal de Santa Maria, 2017-08-29)
Growing concern for sustainability has resulted in a search for alternative materials for
the cement industry to reduce its environmental impacts and achieve greater durability
of structures at lower costs. By partially ...
Retração total e penetração de cloretos de concretos compostos com cinza de CCA de diferentes teores de carbono grafítico
(Universidade Federal de Santa Maria, 2012-02-27)
The use of agro-industrial by-products with pozzolanic properties has become
an alternative in the cement industry because of the increasing consumption of
cement, aiming at the rational use and sustainability of 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 ...
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 ...
Estudo da estabilização granulométrica e química de material fresado com adição de cimento Portland e cinza de casca de arroz para aplicação em camadas de pavimentos
(Universidade Federal de Santa Maria, 2014-07-17)
Road transport is of great importance for many countries, in Brazil it can be even more extreme, due to the concentration of cargo through this modal. We also know that maintenance costs are elevated, forcing managers and ...
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 ...