Banca de DEFESA: NAYARA JHÉSSICA MARQUES DA FONSÊCA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : NAYARA JHÉSSICA MARQUES DA FONSÊCA
DATA : 06/03/2018
HORA: 09:00
LOCAL: A DEFINIR
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: 82
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
SUBÁREA: Construção 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:
Presidente - 1149564 - WILSON ACCHAR
Externo ao Programa - 2331385 - JAQUELIGIA BRITO DA SILVA
Externo à Instituição - ANDREZA KELLY COSTA NOBREGA - UFERSA
Externo à Instituição - VAMBERTO MONTEIRO DA SILVA - IFPB
Notícia cadastrada em: 21/02/2018 14:08
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