Title :
A Microcontroller-Based Microwave Measurement System for Permittivity Determination of Fresh Cement-Based Materials
Author_Institution :
Ataturk Univ., Erzurum
Abstract :
A microcontroller (muC) based free-space microwave measurement system is proposed for quality control and evaluation of fresh cement samples. Only amplitudes of reflection and transmission properties are utilized for complex permittivity determination. The equations for fast and accurate determination of these samples are shown. A correction technique is devised to eliminate systematic errors of the proposed measurement system. Measurement and complex permittivity results of a fresh cement paste sample at 10 GHz are demonstrated to validate the system. This relatively inexpensive, simple, and dynamic measurement system can be a good candidate for instant evaluation and quality control of fresh cement samples at the construction site.
Keywords :
cements (building materials); microcontrollers; microwave measurement; permittivity measurement; quality control; complex permittivity determination; free-space microwave measurement system; frequency 10 GHz; fresh cement-based materials; microcontroller-based microwave measurement system; quality control; quality evaluation; reflection amplitudes; transmission properties; Building materials; Containers; Dielectric materials; Electric variables measurement; Equations; Microwave measurements; Permittivity measurement; Quality control; Reflection; Scattering parameters; amplitudes; dielectric permittivity; free-space method; high-loss materials; microcontroller; microwaves; sensor;
Conference_Titel :
Instrumentation and Measurement Technology Conference Proceedings, 2007. IMTC 2007. IEEE
Conference_Location :
Warsaw
Print_ISBN :
1-4244-0588-2
DOI :
10.1109/IMTC.2007.379007
