Banca de DEFESA: YEZA CAMARA SANTIAGO DE MEDEIROS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : YEZA CAMARA SANTIAGO DE MEDEIROS
DATA : 28/05/2018
HORA: 10:00
LOCAL: A DEFINIR
TÍTULO:

NON-DESTRUCTIVE EVALUATION OF STRUCTURAL CONCRETE BLOCKS


PALAVRAS-CHAVES:

Structural mansory. Hollow concrete blocks. Nondestructive tests.


PÁGINAS: 169
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
SUBÁREA: Estruturas
RESUMO:

The systematic work of the structural masonry construction system in the brazilian civil construction market currently demands technical solutions that aim to evaluate the quality of its components in a quick, economic and effective way. Although the compressive strength of masonry walls is represented by the joint action of its components (block, laying mortar and graute), blocks are responsible for the largest share of this resistance. To ensure the quality of the blocks, NBR 6136 establishes requirements. Among them, the blocks must have sharp edges and must not show cracks, fractures or other defects. The most common way to identify such defects is by performing a visual inspection, a time consuming process in the middle of a production line. In this context, the article presented an alternative for the identification of failures in concrete blocks by means of non-destructive tests. After analyzing the spectra of the blocks obtained experimentally by the impulse excitation technique - using microphone and accelerometer - and theoretically by the numerical modal analysis, it was possible to perceive patterns in the acoustic response of the intact blocks of the M-15 and M-20 family (brazilian blocks sizes). Thus, it was established criteria for the quality control of the blocks by using resonant ultrasound spectroscopy. The main objective of this study was to try non-destructive testing methodologies in order to evaluate the conformity of concrete blocks for structural purposes, where a standard spectrum has been established and its efficacy assessed on hollow components.


MEMBROS DA BANCA:
Externo à Instituição - ANDREA BRASILIANO SILVA - UFPB
Externo à Instituição - HIDELBRANDO JOSE FARKAT DIOGENES - UFERSA
Presidente - 1451817 - JOEL ARAUJO DO NASCIMENTO NETO
Externo ao Programa - 2087565 - RODRIGO BARROS
Notícia cadastrada em: 11/05/2018 08:55
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