Banca de QUALIFICAÇÃO: SIMONE TAIANE GAMELEIRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : SIMONE TAIANE GAMELEIRA
DATE: 13/06/2025
TIME: 09:00
LOCAL: meet.google.com/fso-ptgg-wht
TITLE:

EVALUATION OF ELECTRICAL PROPERTIES OF CONVENTIONAL MASONRY WALL COATING IN THE MICROWAVE RANGE BY A NON-DESTRUCTIVE METHOD

KEY WORDS:

Signal propagation; smart buildings; electrical permittivity; attenuation; electrical conductivity; coating mortar.

PAGES: 21
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Construção Civil
SPECIALTY: Materiais e Componentes de Construção
SUMMARY:

The electromagnetic performance of vertical sealing systems in buildings has become a growing concern due to the increasing demand for wireless connectivity in indoor environments. Masonry walls, traditionally studied under mechanical and thermal aspects, also play a relevant role in the propagation and attenuation of radiofrequency signals, especially in the microwave range, where several communication technologies operate, such as Wi-Fi and Bluetooth. In this context, understanding how the mortar coating influences the electromagnetic behavior of these systems is essential for the development of construction solutions that reconcile construction performance and signal efficiency. Thus, the present study seeks to experimentally evaluate the effect of the mortar coating on the attenuation of microwave signals and on the electrical properties of vertical sealing systems composed of ceramic bricks. For this purpose, wall prototypes with different coating configurations (1 cm, 2 cm and 3 cm thick) were built and subjected to laboratory analysis using electromagnetic characterization techniques in the microwave range. The tests were conducted using a non-destructive method, using the Nicolson-Ross-Weir (NRW) method and the ray tracing method. Calculated and experimental data were obtained for Shielding Effectiveness (SE), complex relative electrical permittivity, loss tangent, attenuation coefficient and conductivity for a wide frequency range, considering different coating thicknesses. The results demonstrated that the coating plays a significant role in signal attenuation, directly impacting the performance of wireless networks in built environments. The method employed proved to be effective for the electromagnetic characterization of building materials and can be applied to other construction typologies with the same purpose.

COMMITTEE MEMBERS:
Presidente - ***.403.354-** - KLEBER CAVALCANTI CABRAL - UFERSA
Interna - 1507841 - MARIA DAS VITORIAS VIEIRA ALMEIDA DE SA
Externa à Instituição - ERICA NATASCHE DE MEDEIROS GURGEL PINTO - UFERSA