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http://dx.doi.org/10.14190/JRCR.2017.5.4.435

Importance of Impregnation and Polishing for Backscattered Electron Image Analysis for Cementitious Self-Healing Specimen  

Kim, Dong-Hyun (Materials Science and Engineering, Kunsan National University)
Kang, Kook-Hee (Materials Science and Engineering, Kunsan National University)
Bae, Seung-Muk (Center For Research Facilities, Kunsan National University)
Lim, Young-Jin (Materials Science and Engineering, Kunsan National University)
Lee, Seung-Heun (Materials Science and Engineering, Kunsan National University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.5, no.4, 2017 , pp. 435-441 More about this Journal
Abstract
Studies on self-healing have currently been diversified and the methods to evaluate the studies have become more diversified as well. Among them, the back-scattered electron (BSE) image acquired through the scanning electron microscope (SEM) is attempted as the means to evaluate the self-healing effect on cracks. In order evaluate by the BSE image, sophisticated pre-processing of specimen is critical and this injected inside the particle, pore and artificial crack of the hardener to stabilize the structure of the newly generated self-healing product and it enables to endure the stress on polishing without deformation. The impregnated specimen smoothen the surface to obtain the BSE image of high resolution that polishing is made for diamond suspension for wet polishing after dry polishing. As a result of evaluating the self-healing product on the impregnated and polished self-healing specimen, the generated product is formed from the surface of the artificial crack and the self-healing substances are confirmed as $Ca(OH)_2$ and C-S-H.
Keywords
Backscattered electron; Epoxy impregnation; Polishing; Self-healing;
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