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Frequency spectrum analysis of lightweight foamed concrete using microwave dielectric measurement technique
Author(s) -
Lee Kim Yee,
Phua YeongNan,
Lim SiongKang,
You Kok Yeow,
Cheng Ee Meng
Publication year - 2019
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31636
Subject(s) - dielectric , network analyzer (electrical) , materials science , microwave , coaxial , acoustics , spectrum analyzer , loss factor , electronic engineering , composite material , structural engineering , optoelectronics , computer science , electrical engineering , engineering , telecommunications , physics
The dielectric characterization of concrete is a significant parameter to study the microwave signal transmission for the building materials. In this paper, a microwave measurement system has been developed using open ended coaxial sensor and vector network analyzer for frequency spectrum analysis of lightweight foamed concrete. The measurement setup is validated prior to make sure the system is working properly. The results of dielectric constant and loss factor of different densities lightweight concrete samples are measured and analyzed from 150 kHz to 8 GHz. From the analysis, the lightweight foamed concrete is a frequency spectrum friendly building material. In addition, the relationship between the dielectric constant and density of the lightweight foamed concrete is found to be interrelated. The empirical modeling of some selected frequencies has been formed. The models are useful for the future application on determining the dielectric constant and characteristic of lightweight concrete samples.