Cover Image

Microwave non-destructive testing of cement concrete using free - space technique / Mazni Munir

Since the existence of moisture in concrete is a major cause of damage to pavements and other concrete structures, there is an increasing need for non-destructive detection and monitoring of moisture content before failure opcurs. Thus, we have developed a free-space measurement system at microwave...

Full description

Saved in:
Bibliographic Details
Main Author: Munir, Mazni
Format: Thesis
Language:English
Published: 1997
Online Access:https://ir.uitm.edu.my/id/eprint/103794/1/103794.pdf
https://ir.uitm.edu.my/id/eprint/103794/
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.uitm.ir.103794
record_format eprints
spelling my.uitm.ir.1037942024-09-28T15:39:40Z https://ir.uitm.edu.my/id/eprint/103794/ Microwave non-destructive testing of cement concrete using free - space technique / Mazni Munir Munir, Mazni Since the existence of moisture in concrete is a major cause of damage to pavements and other concrete structures, there is an increasing need for non-destructive detection and monitoring of moisture content before failure opcurs. Thus, we have developed a free-space measurement system at microwave frequenties in the frequency range of 8.0 -12.5 GHz. for the measurement of reflection and transmission coefficients, S„ and S2l of concrete samples. The dielectric constant and loss tangent values are calculated from the measured data via a C++ language program. Dielectric properties are correlated to water content by dielectric mixture theory. Water content will be measured for different wet specimens of cement concrete, with varying values of air void content. The key components of the measurement system are a pair of horn lens antennas, Wiltron Vector Network Analyzer, mode transitions and a printer. Brrors due to multiple reflections between antennas via the surface of the sample are corrected by using a free-space LRL (Line, Reflect, Line) calibration technique. 1997 Thesis NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/103794/1/103794.pdf Microwave non-destructive testing of cement concrete using free - space technique / Mazni Munir. (1997) Degree thesis, thesis, Universiti Teknologi MARA.
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
description Since the existence of moisture in concrete is a major cause of damage to pavements and other concrete structures, there is an increasing need for non-destructive detection and monitoring of moisture content before failure opcurs. Thus, we have developed a free-space measurement system at microwave frequenties in the frequency range of 8.0 -12.5 GHz. for the measurement of reflection and transmission coefficients, S„ and S2l of concrete samples. The dielectric constant and loss tangent values are calculated from the measured data via a C++ language program. Dielectric properties are correlated to water content by dielectric mixture theory. Water content will be measured for different wet specimens of cement concrete, with varying values of air void content. The key components of the measurement system are a pair of horn lens antennas, Wiltron Vector Network Analyzer, mode transitions and a printer. Brrors due to multiple reflections between antennas via the surface of the sample are corrected by using a free-space LRL (Line, Reflect, Line) calibration technique.
format Thesis
author Munir, Mazni
spellingShingle Munir, Mazni
Microwave non-destructive testing of cement concrete using free - space technique / Mazni Munir
author_facet Munir, Mazni
author_sort Munir, Mazni
title Microwave non-destructive testing of cement concrete using free - space technique / Mazni Munir
title_short Microwave non-destructive testing of cement concrete using free - space technique / Mazni Munir
title_full Microwave non-destructive testing of cement concrete using free - space technique / Mazni Munir
title_fullStr Microwave non-destructive testing of cement concrete using free - space technique / Mazni Munir
title_full_unstemmed Microwave non-destructive testing of cement concrete using free - space technique / Mazni Munir
title_sort microwave non-destructive testing of cement concrete using free - space technique / mazni munir
publishDate 1997
url https://ir.uitm.edu.my/id/eprint/103794/1/103794.pdf
https://ir.uitm.edu.my/id/eprint/103794/
_version_ 1811598325388935168
score 13.211869

Similar Items