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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 ...
Concretos com altos teores de filer calcário em misturas binárias e ternárias com cinza volante: resistência à compressão mecânica, microestrutura e sustentabilidade
(Universidade Federal de Santa Maria, 2021-08-19)
The cement industry produces about 5% of all CO2 emissions that contribute to greenhouse gases, which represents a significant number compared to the worldwide magnitude of its production, with the respective effects of ...
Definições tecnológicas para construção de habitações em zonas rurais
(Universidade Federal de Santa Maria, 2022-04-20)
The present document reports the structural design made in reinforced concrete and in structural masonry of a terrestrial residence, generating quantitative tables about the materials that must be used to compose the best ...
Otimização do desempenho de um concreto convencional vibrado a partir do ajuste do empacotamento dos agregados
(Universidade Federal de Santa Maria, 2022-03-29)
This undergraduate thesis presents a study of the packing particles of a conventional vibrated concrete of 10 MPa at 90 days used in the construction of a small hydroelectric power plant, in order to reduce the cement ...
Penetração de cloretos em concretos com diferentes tipos de cimento submetidos a tratamento superficial
(Universidade Federal de Santa Maria, 2010-08-31)
The durability characteristics of concrete should be given the same importance as compressive strength when designing concrete structures. Concrete should be able to
withstand the effects of aggressive agents and behave ...
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 ...
Penetração de cloretos em concretos compostos com cimento Portland branco e escória de alto forno, ativados quimicamente
(Universidade Federal de Santa Maria, 2008-02-12)
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 ...
Penetração de cloretos em concretos compostos com diferentes teores de cinza de casca de arroz
(Universidade Federal de Santa Maria, 2004-12-21)
The service life of concrete structures can be extended by controlling aggressive agents often found in the environment that attack concrete. Such agents may cause structures to deteriorate and result in technical losses ...
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 ...