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http://dx.doi.org/10.14190/JRCR.2020.8.1.143

Performance Evaluation Method of Self-Healing Concrete Using Gas Diffusion Experiment  

Lee, Do-Keun (Department of Civil Engineering, Chungnam National University)
Shin, Kyung-Joon (Department of Civil Engineering, Chungnam National University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.8, no.1, 2020 , pp. 143-151 More about this Journal
Abstract
Recently, research on self-healing concrete has been actively conducted, and various methods have been attempted for use in the maintenance of structures. However, contrary to the technical development of self-healing concrete, the method for evaluating the performance is insufficient. Although surface observation and permeability experiments are widely used to observe the healing of cracks, microscopic observation of surface may be insufficient to assess the overall performance. Also, permeation experiments should consider the losses caused by the dissolution of self-healed product and viscosity of water. Although a gas diffusion experiment have been proposed to overcome the shortcomings of these two test methods, verification has not been made on specimens with actual healing. Therefore, in this study, gas diffusion experiments were performed on the mortar specimens that had healed, and the adequacy of self-healing evaluation by the gas diffusion experiment was verified.
Keywords
Oxygen diffusion; Crack; Diffusion coefficient; Self-healing;
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Times Cited By KSCI : 2  (Citation Analysis)
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