Banca de QUALIFICAÇÃO: PEDRO HENRIQUE RODRIGUES

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : PEDRO HENRIQUE RODRIGUES
DATE: 17/08/2023
TIME: 09:00
LOCAL: Virtual
TITLE:

Concrete blocks with addition of waste from the ceramic sanitary ware industry.

KEY WORDS:

sanitary ware waste, concrete blocks, partial cement replacement.

PAGES: 79
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Materiais Não-Metálicos
SPECIALTY: Cerâmicos
SUMMARY:

The production of sanitary ceramics in the Brazilian context is an activity of significant relevance in the market; however, the associated production process results in the generation of waste that lacks appropriate final disposal methods. If such waste is not directed towards specific applications, it leads to the accumulation of these materials without a determined purpose. The production process involves various stages, including the preparation of the mass, the rheology of the slip, casting, drying, among others. As a result, three types of waste are generated: gypsum, shards, and liquid effluents. Specifically, the liquid effluent, also known as mineral sludge, arises from the cleaning of molds and glazing booths, and its chemical composition is similar to that of the original raw material. Currently, the generated effluent does not have an adequate final destination and is deposited in artificial settling ponds. When these ponds reach their maximum capacity, the material is transferred to sanitary landfills. In light of this scenario, this dissertation proposes the development of hollow concrete blocks with partial substitution of cement by the effluent waste, aiming at its valorization and reducing environmental impact. The study will be conducted through an experimental approach, using effluent from the settling pond (ceramic waste) obtained from a company in Araxá-MG. The characterization of the materials used to manufacture the blocks will be carried out, and tests will be performed to evaluate the pozzolanic activity of the waste. Subsequently, three dry concrete mixtures will be developed, using different percentages of waste (0%, 5%, and 10%) as a replacement for cement. A prototype at a scaled-down ratio of 2 will be used for block molding. The performance of the produced blocks will then be evaluated, analyzing dimensional characteristics, water absorption and liquid area, compressive strength, drying shrinkage, and thermal comfort. The aim is to obtain a Class C concrete block with or without structural function, with a characteristic compressive strength of 3 MPa and properties similar to the reference block.

COMMITTEE MEMBERS:
Presidente - MARCELA MAIRA NASCIMENTO DE SOUZA SOARES
Interno - DOMINGOS SAVIO DE RESENDE
Interno - AUGUSTO CESAR DA SILVA BEZERRA
Externa ao Programa - JUNIA NUNES DE PAULA