Banca de DEFESA: MARIA DA CONCEIÇÃO TAVARES

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : MARIA DA CONCEIÇÃO TAVARES
DATA : 15/04/2019
HORA: 14:30
LOCAL: CEFET-MG, Campus II, Prédio 18, sala 2
TÍTULO:

Critical analysis of the heat and heat shock test method, in the light of NBR 15.575: 2013, applied in masonry systems with mortar coatings

PALAVRAS-CHAVES:

NBR 15.575:2013; Performance standard; Sealing masonry; Thermal shock.

PÁGINAS: 80
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
SUBÁREA: Construção Civil
ESPECIALIDADE: Processos Construtivos
RESUMO:

The NBR 15.575: 2013 performance standard was created to ensure that Brazilian housing developments are delivered to users with minimum standards of comfort and safety. This standard establishes the minimum criteria for the performance of residential buildings that must be met by builders, designers and suppliers. In order to assess the "durability of vertical fence systems" requirement, this standard establishes the performance of the test by exposure to heat and thermal shock. After 5 years of publication of the NBR 15.575:2013 several researches were developed on the application of this test. These surveys pointed to gaps in the instructions and parameters for the performance of this test, such as the size of test specimens and the number of cycles (heating / cooling) required for the test. Thus, the objective of this research is to analyze the behavior of specimens with different dimensions, when submitted to the prescribed test. In order to do so, ceramic tile masonry specimens, with projected mortar coating and final finishing with acrylic paint system, with different dimensions were submitted to 10 and 20 heating / cooling cycles. At the end of the experiments, it was statistically verified that there is influence of the height of the specimens on the results of the test (the mean values of the obtained displacements normalized as a function of the height of the specimen can not be considered statistically equal) strong evidence has been collected that the number of cycles has no influence on displacement and items to be evaluated by visual inspection. It has also been found that the tensile strength values of the coatings were not reduced after submission to the thermal cycles. The research presents results that demonstrate the need to review the parameters and criteria established by this standard.

 

MEMBROS DA BANCA:
Presidente - ROGERIO CABRAL DE AZEVEDO
Interno - CRISTINA GUIMARAES CESAR
Interno - JUNIA NUNES DE PAULA
Externo ao Programa - RONAN DRUMMOND DE FIGUEIREDO ROSSI
Externo à Instituição - EDUARDO CABALEIRO CORTIZO - UFMG