Banca de DEFESA: RAFAEL VIÇOSO DE MIRANDA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : RAFAEL VIÇOSO DE MIRANDA
DATE: 27/04/2023
TIME: 14:00
LOCAL: https://conferenciaweb.rnp.br/webconf/junia-nunes-de-paula
TITLE:

STUDY OF THE INFLUENCE OF GRAPHEN OXIDE INCORPORATION ON THE DURABILITY OF CEMENTIC COMPOUNDS

KEY WORDS:

graphene oxide, nanomaterials,cement mortar, durability

PAGES: 80
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Construção Civil
SPECIALTY: Materiais e Componentes de Construção
SUMMARY:

The objective of the research was to evaluate the durability of cementitious compounds with the addition of graphene oxide (GO). The content of 0.08% of graphene oxide, in relation to the cement mass, was added in mortars made with CPV cement. Tests of mechanical resistance, workability, porosity and resistance to aggressive agents, sulfates and chlorides, were carried out. The workability of the samples, measured by the flow table test, showed a reduction of approximately 12% in the spreading diameter. The greatest difference observed in mechanical strength was at the age of 91 days, with an increase in compression of 5.05% and in tensile strength by diametral compression also an increase of 9.18% in relation to the reference. Higher water absorption, voids index and specific mass were observed in samples with graphene oxide compared to control samples. In view of the penetration of chlorides, the samples with GO had a reduction of approximately 25%. In the test of resistance to attack by sulfates, no significant difference was found in the expansion of the samples with GO, in relation to the reference samples. The results suggest great potential for obtaining cementitious composites enhanced with graphene oxide due to the specific properties of this material.

COMMITTEE MEMBERS:
Presidente - JUNIA NUNES DE PAULA
Interno - PETER LUDVIG
Interno - AUGUSTO CESAR DA SILVA BEZERRA
Externo à Instituição - MANUEL HOUMARD - UFMG