CONTRIBUIÇÃO AO ESTUDO DAS PROPRIEDADES MECÂNICAS E DA DURABILIDADE DE CONCRETOS COM ESCÓRIA DE ACIARIA ELÉTRICA (EAF) COMO AGREGADO GRAÚDO
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Data
2007-10-17
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Universidade Federal de Goiás
Resumo
The increasing demand for aggregate for uses in engineering stimulated the search for
alternative materials. In this way, the civil construction potentially started to be a great
consumer of residues from other industries, becoming a great recycle plant.
The use of by-product, brings great environmental benefits in relation to the degradation of
the environment, as for example, less settlement of residues in earth fill, the reduction of
extraction of natural resources, and the exploration of aggregate ores.
Steel plants from around the world have a commom problem, that is what to do with all the
steel slags generated as a by-product from the steel refining in electric steel plants or
oxygen steel plants. There are two points of these process where slags can be generated:
the first comes from the electric or oxygen furnace itself (called oxidizing refining) and the
second is the laddle metallurgy slag (reduction refining slag), which is the last stage of the
steel production.
This aims to demonstrate related studies to the use of steel slags (EAF slags) in electric
steel plants as coarse aggregate.
Expansibility of the steel slag tests had been carried through, compressive strength, tensile
strength for diametrical compression, related modulus of deformation and durability tests,
such as: intensity of corrosion, potential of corrosion, ohmic resistivity and depth of
carbonation.
After this, it was observed the similarity of the results between the concrete made with
steel slag and the concrete made with conventional aggregates, natural aggregate known as
mica schist. It was observed improvements in the properties of the concrete with steel slag,
such as: increase in its strength (compressive / tensile) and increase of the modulus of
deformation. Concerning the durability, it was noted, in a general way, that the substitution
of the aggregates, conventional for siderurgical, has not influenced in the performance of
the concrete.
Descrição
Citação
FARIA, Ricardo Andrade Fernandes. CONTRIBUTION TO THE STUDY OF MECHANICAL PROPERTIES
AND THE DURABILITY OF CONCRETE WITH SLAG OF
Residue (EAF) as aggregate. 2007. 146 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Goiás, Goiânia, 2007.