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Itens para a visualização no momento 21-30 of 31
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 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 ...
Estudo dos estados limites de serviço em lajes pré-moldadas de concreto com vigotas tipo trilho
(Universidade Federal de Santa Maria, 2019-11-29)
This study aims to verify the limits imposed by the service limits of excessive vibration and excessive deformation in accordance with ABNT NBR 6118 (2014) for precast concrete molds with rail-type studs and using 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 ...
Microestrutura do cobrimento de concretos com altos teores de escória e cinza volante ativadas por cimento portland e cal hidratada
(Universidade Federal de Santa Maria, 2007-03-08)
In the history of the concrete structures there was a time in which the mechanical resistance was the most important property for the designers. However due to amount of pathologies in the concrete structures and your ...
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 ...
Estudo estatístico de produção de concretos com adições minerais
(Universidade Federal de Santa Maria, 2006-03-24)
The GEPECON, Studies and Researches Concrete Group, has developed a researches collection about the concrete with mineral additions over the last 10 years. Starting from these papers we have decided to gather some projects ...