Microwave Absorption Characteristics of a Carbon-Containing Electrically Conductive Concrete in a Multimode Cavity

• Chambers Brandon

  Robert M. Buchan Department of Mining, Queen's University, Canada.

• A. Pickles Christopher

  Robert M. Buchan Department of Mining, Queen's University, Canada.

• J. Tumidajski Peter

  Strategic Planning, St. Clair College of Applied Arts and Technology, Canada.

抄録

The microwave absorption characteristics of both powdered and rectangular blocks of an electrically conductive concrete were measured and compared to a normal Portland cement concrete in a multimode cavity. The variables investigated were: irradiation time, sample mass and incident power for the powdered samples and sample orientation, water additions and multiple irradiations for the block samples. The results were quantified in terms of the microwave absorption efficiency (η_a). The absorption efficiency of the electrically conductive concrete was significantly higher than the Portland cement control concrete. For both of the concretes, hot spot formation occurred in the vicinity of the corner of the block. For the electrically conductive concrete this phenomenon took place close to the surface and resulted in combustion of the carbon and disintegration of the concrete. For the normal Portland cement concrete, the hot spot formed below the surface where fracturing, degradation and melting occurred.

収録刊行物

• Journal of Advanced Concrete Technology

  Journal of Advanced Concrete Technology 10 (1), 31-40, 2012-01-21

  公益社団法人 日本コンクリート工学会

キーワード

• General Materials Science
• Building and Construction

詳細情報

• CRID: 1390282680196930048
• NII論文ID: 130001924764
• DOI: 10.3151/jact.10.31
• ISSN: 13473913
• ISSN: 13468014
• Web Site: https://www.jstage.jst.go.jp/article/jact/10/1/10_1_31/_pdf
• 本文言語コード: en
• データソース種別:
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