1997 Fiscal Year Final Research Report Summary
Effect of reinforcing rod on TV wave absorption characteristics of the concrete
| Project/Area Number |
07555469
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Building structures/materials
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| Research Institution | NAGOYA INSTITUTE OF TECHNOLOGY |
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Principal Investigator |
OKAJIMA Tatsuo Nagoya Institute of Technology, Faculty of Engineering, Professor, 工学部, 学長 (30024243)
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| Co-Investigator(Kenkyū-buntansha) |
KAWABE Shinji Faculty of Engineering, Assoc.Professor, 工学部, 助教授 (20252314)
IKEDA Tetsuo Faculty of Engineering, Professor, 工学部, 教授 (50005253)
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| Project Period (FY) |
1995 – 1997
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| Keywords | electromagnetic / radio waves / television / electric wave absorption / concrete / 鉄筋 |
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| Research Abstract |
In city area, electromagnetic interference caused by buildings is a very important problem. For example, a well known ghost phenomenon is caused by interaction between incident and reflected waves caused due to the presence of large and tall buildings. The characteristics of the radio waves used in television broad casting absorption have been measured by coaxial-wave-guide unit or curtain wall specimens. But these measurements have some demerits. In this regards, a new measurement technique by panel specimen using parallel wire line was proposed recently. The elastic wave absorption characteristics of the reinforcing rod inside the reinforced concrete structures are examined using the recently proposed technique. A reinforcing rod in horizontal directions influences electric wave absorption characteristics of the concrete.
In this paper, an equation of calculation of average electric wave absorption of concrete structures in presence of reinforcement is proposed taking care of the effect of the distribution of the reinforcement.
In this method, an equivalent material characteristics of the composite material is calculated. This method has potential of application in other different composite material also.
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