Influência da areia artificial oriunda da britagem de rocha granito-gnaisse nas propriedades do concreto convencional no estado fresco e endurecido
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Data
2007-10-31
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Universidade Federal de Goiás
Resumo
The dissertation is aimed at the study being presented theoretical and
experimental verification of the performance of artificial sand come from
crushing the rock of granite-gneiss in relation to natural sand.
Currently, the sand has artificially low commercial value of the market
and is considered a "some kind of piece of marginal material ", whose purpose
is not defined and remained stored in the courtyards of the quarries, forming
huge piles that cause various environmental impacts. In addition to this, the
traditionalism and the lack of information has led to an unwarranted
mystification of this material.
The methodology used for the tests of the research was based on
standardized tests, which attempt to meet the objectives of the dissertation, in
addition to enhancing the development of techniques to search for alternative
aggregates. This has examined the influence of artificial sand in place of natural
sand, with different proportions, and focuses on quality of the concrete in plastic
and hardened its phases, taking into account the mechanical, elastic, physicalchemical,
environmental and economic.
The work was to characterize the material that composed the
concrete studied. After this phase, were up corpses-of-proof concrete, using 15
(fifteen) different traits, so that the natural sand was gradually replaced by
artificial sand, in proportions of 25%, 50%, 75%, and 100%. For each trait was
quantified its rebate, density, air incorporation, resistance to axial compression,
traction, deformation module, absorption by immersion, alkali-aggregate
reaction and an economic evaluation.
It is considered that the main objective of this research has been fully
achieved, because it was proven the theoretical feasibility of replacing part or
even all, of natural sand by artificial sand in conventional
Descrição
Citação
CABRAL, Keillon Oliveira. The Influence of the deriving artificial sand of the britagem of
rock granite-gnaisse in the properties of the conventional concrete in the cool and
hardened state. 2007. 341 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Goiás, Goiânia, 2007.