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Effects of moisture content and temperature on microwave measurement of lightweight foamed concrete

The effects moisture content and temperature are important in microwave measurements and building material engineering. In this article, the relationship between the effects of moisture content/temperature and microwave measurements of lightweight foamed concrete is investigated. A frequency sweep m...

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Main Authors:	Lee, Kim Yee, Phua, Yeong Nan, Lim, Siong Kang, You, Kok Yeow, Cheng, Ee Meng
Format:	Article
Published:	ASTM International 2024
Subjects:	TK Electrical engineering. Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/108946/ http://dx.doi.org/10.1520/JTE20230257
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id	my.utm.108946
record_format	eprints
spelling	my.utm.1089462024-12-16T00:42:59Z http://eprints.utm.my/108946/ Effects of moisture content and temperature on microwave measurement of lightweight foamed concrete Lee, Kim Yee Phua, Yeong Nan Lim, Siong Kang You, Kok Yeow Cheng, Ee Meng TK Electrical engineering. Electronics Nuclear engineering The effects moisture content and temperature are important in microwave measurements and building material engineering. In this article, the relationship between the effects of moisture content/temperature and microwave measurements of lightweight foamed concrete is investigated. A frequency sweep measurement from 150 kHz to 8 GHz was performed on 10-cm cube samples with varying moisture content (0-20 %) and temperature (20°C-40°C). The microwave S-parameters were measured using an R&S ZVB8 Vector Network Analyzer with an N-type open-ended coaxial sensor and were used to calculate the dielectric constant. Models were developed to describe the relationship between moisture content, temperature, and dielectric characteristics of the concrete. Validation showed that the error was below 5 % for dielectric constant and below 8 % for loss factor at 5-GHz frequency. These findings have implications for the telecommunications industry and on-site moisture content measurements, with potential applications in building material engineering. ASTM International 2024-01 Article PeerReviewed Lee, Kim Yee and Phua, Yeong Nan and Lim, Siong Kang and You, Kok Yeow and Cheng, Ee Meng (2024) Effects of moisture content and temperature on microwave measurement of lightweight foamed concrete. Journal of Testing and Evaluation, 52 (1). pp. 1-10. ISSN 0090-3973 http://dx.doi.org/10.1520/JTE20230257 DOI:10.1520/JTE20230257
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	TK Electrical engineering. Electronics Nuclear engineering
spellingShingle	TK Electrical engineering. Electronics Nuclear engineering Lee, Kim Yee Phua, Yeong Nan Lim, Siong Kang You, Kok Yeow Cheng, Ee Meng Effects of moisture content and temperature on microwave measurement of lightweight foamed concrete
description	The effects moisture content and temperature are important in microwave measurements and building material engineering. In this article, the relationship between the effects of moisture content/temperature and microwave measurements of lightweight foamed concrete is investigated. A frequency sweep measurement from 150 kHz to 8 GHz was performed on 10-cm cube samples with varying moisture content (0-20 %) and temperature (20°C-40°C). The microwave S-parameters were measured using an R&S ZVB8 Vector Network Analyzer with an N-type open-ended coaxial sensor and were used to calculate the dielectric constant. Models were developed to describe the relationship between moisture content, temperature, and dielectric characteristics of the concrete. Validation showed that the error was below 5 % for dielectric constant and below 8 % for loss factor at 5-GHz frequency. These findings have implications for the telecommunications industry and on-site moisture content measurements, with potential applications in building material engineering.
format	Article
author	Lee, Kim Yee Phua, Yeong Nan Lim, Siong Kang You, Kok Yeow Cheng, Ee Meng
author_facet	Lee, Kim Yee Phua, Yeong Nan Lim, Siong Kang You, Kok Yeow Cheng, Ee Meng
author_sort	Lee, Kim Yee
title	Effects of moisture content and temperature on microwave measurement of lightweight foamed concrete
title_short	Effects of moisture content and temperature on microwave measurement of lightweight foamed concrete
title_full	Effects of moisture content and temperature on microwave measurement of lightweight foamed concrete
title_fullStr	Effects of moisture content and temperature on microwave measurement of lightweight foamed concrete
title_full_unstemmed	Effects of moisture content and temperature on microwave measurement of lightweight foamed concrete
title_sort	effects of moisture content and temperature on microwave measurement of lightweight foamed concrete
publisher	ASTM International
publishDate	2024
url	http://eprints.utm.my/108946/ http://dx.doi.org/10.1520/JTE20230257
_version_	1818834069956329472
score	13.22586

Effects of moisture content and temperature on microwave measurement of lightweight foamed concrete

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