Banca de QUALIFICAÇÃO: GABRIELA BRENDA DE LIMA RIBEIRO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : GABRIELA BRENDA DE LIMA RIBEIRO
DATE: 30/08/2021
TIME: 14:00
LOCAL: Plataforma Microsoft Teams
TITLE:

PERFORMANCE OF HIGH-PERFORMANCE CONCRETE (CAD) USING PHOSPHATE ORE MAGNETIC TAILINGS

KEY WORDS:

High performance concrete, Magnetic tailings, Fine aggregate.

PAGES: 78
BIG AREA: Engenharias
AREA: Engenharia de Minas
SUMMARY:

The increasing amount of tailings generated in mining activities has raised the interest of several researchers in providing an appropriate destination for them. At the same time, the pursuit of sustainable materials provides motivation for using magnetic tailings as a fine aggregate in concrete. This study aims to develop a high-performance concrete (HPC) with partial replacement of the fine aggregate by magnetic tailings derived from the phosphate rock beneficiation process in Araxá in the Alto Paranaíba Mesoregion of Minas Gerais. The purpose is to improve the pore structure of concrete by optimizing the packing of granular materials and incorporating mineral addition, as well as adjusting the workability using chemical additive. After determining the concrete mix, cylindrical specimens will be molded (10 cm × 20 cm), then they will remain in wet curing for 28 days. Following that, the properties of the concrete produced in the hardened state will be evaluated through the tests: compressive strength, modulus of elasticity, water absorption, specific weight and durability when exposed to sulfuric acid attack. The results will be compared with the reference concrete to evaluate the feasibility of the proposed replacement. It is expected to produce a concrete with a slump of approximately 150 mm, dense matrix, compressive strength greater than 60 MPa and that presents good durability.

BANKING MEMBERS:
Presidente - MARCELA MAIRA NASCIMENTO DE SOUZA SOARES
Interno - ALEXANDER MARTIN SILVEIRA GIMENEZ
Interno - AUGUSTO CESAR DA SILVA BEZERRA
Externa ao Programa - FLAVIA SPITALE JACQUES POGGIALI
Externa à Instituição - DAYANA CRISTINA SILVA GARCIA - UFMG