Banca de DEFESA: SANDE DOS SANTOS BATISTA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : SANDE DOS SANTOS BATISTA
DATA : 20/08/2021
HORA: 09:00
LOCAL: ONLINE
TÍTULO:

GYPSUM COMPOSITES REINFORCED WITH FABRICS SISAL FIBER HORNIFICATE

PALAVRAS-CHAVES:

Superplasticizer additive. Damping. Mechanical behavior. Impact test. Plas-ter paste.

PÁGINAS: 121
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
RESUMO:

The insertion of vegetable fibers, such as sisal, in ceramic matrices is a way to improve the flexural strength, tenacity and post-cracking behavior of the material. Associated with this, the physical hornification treatment maximizes these benefits. Therefore, the present work sought to develop a composite of gypsum reinforced with hornified sisal fiber fabrics and analyze the influence of the treatment on the mechanical behavior of the material. For this purpose, a mixture of gypsum, water and a superplasticizer ad-ditive suitable for the manual molding process of the composite and a structural fabric of sisal bundles was developed. During the composites development process, the in-fluence of the number and direction of the reinforcement layers on the material's me-chanical performance was evaluated. All materials used to make the composite were chemically, physically and mechanically characterized. Regarding the composite, the mechanical performance was evaluated through four-point bending, tenacity, impact and damping tests. With the insertion of the fabric reinforcement, a significant improve-ment in the mechanical properties of the composite was observed, providing an in-crease in tenacity and greater structural stability in the tested samples, but no improve-ment in the mechanical performance of the composites was observed with the realiza-tion of hornification of the fabric.

MEMBROS DA BANCA:
Externa ao Programa - 1047082 - JOYCE BATISTA AZEVEDO
Externa à Instituição - MIRTANIA ANTUNES LEAO
Interno - 2178571 - RICARDO FERNANDES CARVALHO
Presidente - 287176 - SANDRO FABIO CESAR