<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>The knowledge of moisture content in cement based material is important especially for the safety in field work. In this paper, a non-destructive and contactless free space method is used for measurement of moisture content in cement based materials (mortar) at microwave frequencies. The measurement system consists of a 17 GHz dielectric resonator oscillator (DRO) as a microwave source, a Power Meter as the detector, and a pair of lens horn antennas to transmit and receive the microwave signal. An empirical formula of moisture content was obtained by using a relationship between attenuation and moisture content. This model is best for prediction of moisture content greater than 2% with percentage mean error of 3%.</p></abstract>

The knowledge of moisture content in cement based material is important especially for the safety in field work. In this paper, a non-destructive and contactless free space method is used for measurement of moisture content in cement based materials (mortar) at microwave frequencies. The measurement system consists of a 17 GHz dielectric resonator oscillator (DRO) as a microwave source, a Power Meter as the detector, and a pair of lens horn antennas to transmit and receive the microwave signal. An empirical formula of moisture content was obtained by using a relationship between attenuation and moisture content. This model is best for prediction of moisture content greater than 2% with percentage mean error of 3%.

Determination of Moisture Content in Mortar at Near Relaxation Frequency 17 GHz

Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang Selangor, Malaysia

Department of Electrical and Electronic Engineering, Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, 53300 Setapak, Kuala Lumpur, Malaysia

Radio Communication Engineering Department (RaCED), Faculty of Electrical Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia

Measurement Science Review

{"article-title":"Determination of Moisture Content in Mortar at Near Relaxation Frequency 17 GHz"}

The knowledge of moisture content in cement based material is important especially for the safety in field work. In this paper, a non-destructive and...

Determination of Moisture Content in Mortar at Near Relaxation Frequency 17 GHz

Published Online: Dec 21, 2011

Page range: 203 - 206

DOI: https://doi.org/10.2478/v10048-011-0031-0

Keywords
Mortar, attenuation, moisture content, nondestructive technique (NDT), free space, transmission

This content is open access.

Determination of Moisture Content in Mortar at Near Relaxation Frequency 17 GHz

Published Online: Dec 21, 2011

Page range: 203 - 206

DOI: https://doi.org/10.2478/v10048-011-0031-0

KeywordsMortar, attenuation, moisture content, nondestructive technique (NDT), free space, transmission

This content is open access.

Keywords
Mortar, attenuation, moisture content, nondestructive technique (NDT), free space, transmission