A new non-destructive test method that can estimate corrosion amount on rebar quantitatively

• Project/Area Number: 22560460
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: Gifu University
• Principal Investigator: KOBAYASHI Koichi 岐阜大学, 工学部, 准教授 (20283624)
• Co-Investigator(Renkei-kenkyūsha): ROKUGO Keitetsu 岐阜大学, 工学部, 教授 (40127155) ; OZAWA Mitsuo 岐阜大学, 工学部, 助教 (80313906)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 電磁誘導加熱 / 鉄筋腐食 / 非破壊 / 赤外線サーモグラフィ / 熱伝導解析 / 赤外線サーモグラフィー / IH / サーモグラフィ / 非破壊検査

Research Abstract

This study aimed at developing a new non-destructive test method using induction heating (IH) and infrared thermography for quantitative assessment of rebar corrosion. Rebars under cover concrete were heated with an IH device, and the effects of rebar diameter and corrosion amount on the temperature distribution on the cover concrete surface were investigated using an infrared thermography camera. A larger corrosion amount suppressed heat diffusion from the rebars to the cover concrete and reduced the increase in surface temperature of the cover concrete.

Research Products

• [Journal Article] Nemy Banthia: Corrosion Detection in Reinforced Concrete using Induction Heating and Infrared Thermography (2011)
  • Author(s): Koichi Kobayashi
  • Journal Title: Journal of Civil Structural Health Monitoring Volume: V ol. 1 Pages: 25-35
  • Peer Reviewed
• [Journal Article] IH を用いた鉄筋腐食量の定量的な非破壊検査に関する基礎的研究 (2011)
  • Author(s): 中村亮太, 中澤里, 六郷恵哲, 小林孝一
  • Journal Title: コンクリート工学年次論文集 Volume: V ol. 33,No. 1 Pages: 1697-1702
  • Peer Reviewed
• [Journal Article] IHを用いた鉄筋腐食量の定量的な非破壊検査に関する基礎的研究 (2011)
  • Author(s): 中村, 中澤, 六郷, 小林
  • Journal Title: コンクリート工学年次論文集 Volume: 33-1 Pages: 1697-1702
  • Peer Reviewed
• [Journal Article] Corrosion detection in reinforced concrete using induction heating and infrared thermography (2011)
  • Author(s): K.Kobayashi・N.Banthia
  • Journal Title: J Civil Struct Health Monit Online version Volume: 1
  • Peer Reviewed
• [Presentation] A quantitative assessment of steel corrosion by a new NDT method with IH, Concrete Solutions (2011)
  • Author(s): Koichi Kobayashi, Ryota Nakamura, Sato Nakazawa and Keitetsu Rokugo
  • Organizer: Proceedings of concrete solutions, 4th international conference on concrete repair, pp. 369-379
  • Place of Presentation: Dresden,Germany
• [Presentation] A quantitative assessment of steel corrosion by a new NDT method with IH (2011)
  • Author(s): K.Kobayashi
  • Organizer: concrete solutions, 4th international conference on concrete repair
  • Place of Presentation: Dresden工科大学