Banca de QUALIFICAÇÃO: NAYARA JHÉSSICA MARQUES DA FONSÊCA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : NAYARA JHÉSSICA MARQUES DA FONSÊCA
DATA : 06/03/2017
HORA: 09:00
LOCAL: Setor IV, Bloco I, Sala 17
TÍTULO:

POTENTIAL OF CEMENT SUBSTITUTION BY LIME IN SOIL-CEMENT BRICKS
WITH INCORPORATION OF CERAMIC WASTE


PALAVRAS-CHAVES:

Soil-lime; construction waste; mechanical strength; durability;
sustainability.


PÁGINAS: 30
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
RESUMO:

The construction industry is an important industry in the economic system in which
it operates. In addition to generating employment and income for the population,
the sector also contributes to improving the environment, safety and well-being.
However, high resource ratios are used for construction as well as large waste
management systems generated by it, the major concern regarding the negative
environmental impact generated and the serious consequences. In view of the
high-energy consumption in the cement manufacturing process, large amounts of
CO2 emitted during the clinker burning, the availability of slaked lime and the high
rate of loss involving ceramic blocks used in masonry seal, this work aims to
evaluate the potential of cement substitution by lime in soil-cement bricks with
ceramic waste incorporation. It will be performed ternary compositions of soil +
12% cement + 4% residue ceramic, soil + 12% hydrated lime + 4% residue
ceramic, quaternary soil + 6% cement + 6% hydrated lime + 4% residue ceramic.
Developing all compositions without addition of ceramic waste to serve as
reference and enable the analysis of the influence of the residue on the behavior
of the produced bricks. After the processes of pressing and curing of the bricks,
they are submitted to the tests of resistance to simple compression, water
absorption and modified durability. Then, scanning electron microscopy and test
X-ray diffraction will analyze the fracture surfaces of these materials. It is expected
that, given the silica and alumina contents present, both in the used soil and in the
finely ground ceramic waste, the so-called pozzolanic reaction occurs. In this
reaction, the calcium hydroxide resulting from the hydration of the cement and / or
lime reacts with the aforementioned silica and alumina forming hydrated silicates
and calcium aluminates that may contribute to the improvement of the physical
and mechanical properties of the compositions studied. In this context, it is
expected that the produced bricks present good conditions of strength and
durability in accordance with the recommendations of the current Standards for
bricks in non-structural application. The first experimental results showed that, in
terms of resistance to simple compression, water absorption and modified
durability, the ternary composition soil + 12% cement + 4% ceramic residue
presented more significant values. In the quaternary mixtures, the formulation soil +
6% cement + 6% lime and 4% ceramic residue showed performance better.


MEMBROS DA BANCA:
Interno - 022.937.264-36 - ANDREZA KELLY COSTA NOBREGA - UFERSA
Externo ao Programa - 2331385 - JAQUELIGIA BRITO DA SILVA
Presidente - 1149564 - WILSON ACCHAR
Notícia cadastrada em: 02/03/2017 10:02
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