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http://dx.doi.org/10.12652/Ksce.2011.31.2D.295

A Study on the Permeability through Concrete using RF Wireless Module for Reinforced Concrete Structure  

Jo, Byung-Wan (한양대학교 건설환경공학과)
Park, Jung-Hoon (한양대학교 건설환경공학과)
Yoon, Kwang-Won (한양대학교 건설환경공학과)
Kim, Heoun (한양대학교 건설환경공학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.31, no.2D, 2011 , pp. 295-302 More about this Journal
Abstract
Ubiquitous is an information communication environment which peoples could connect on network without being conscious of the network and computer condition at anytime and anywhere. Presently, advanced technology, digital cities and eco-friendly cities using Ubiquitous technology are being focused through out the world. As recent information industry and communication technology have developed remarkably, studies on intelligent structures and structural maintenance methods by combining a general idea of connecting all objects on network by interpolating computers which is called Ubiquitous Computing, and USN(Ubiquitous Sensor Network) are being attempted. In this paper, a basic experiment on penetration of RF(Radio Frequency) sensor nodes using an experimental sample setting concrete and reinforcing bar as variables is studied to estimate the possibility of applying wireless sensor networks in structures. The spring of reinforcing bars, concrete thickness, intensity of radio frequency were set up as variables, transmitting and receiving distance were checked vertically and horizontally. Moreover, Spectrum Analyzer was used for checking the magnitude of the frequency used in order to measure the reduction of radio wave exactly. The radio wave reduction was numerically analyzed, and the influence of the wavelength was analysed as well. As a result, the penetration depth in concrete without reinforcing bars was 45cm, and in reinforced concretes which reinforcing bars placed at spacing of 5cm and 15cm, the penetration depth were 37cm and 45cm each. No influence on radio wave penetration depth were found when the spacing of reinforcing bars in the reinforced concrete structures becomes over 15cm.
Keywords
ubiquitous; concrete; permeability; wireless; sensor;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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