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

本研究旨在发展一种新的无损检测方法，利用感应加热（IH）和红外热成像定量评估钢筋腐蚀。采用IH装置对保护层混凝土下钢筋进行加热，利用红外热成像仪研究了钢筋直径和锈蚀量对保护层混凝土表面温度分布的影响。较大的腐蚀量抑制了从钢筋到保护层混凝土的热扩散，并降低了保护层混凝土表面温度的升高。

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.