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Title |
Evaluation of Crack Self-healing Performance in Centrifugal Molding Concrete by Permeability Test
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Authors |
황철성(Chul Sung Hwang) ; 우해식(Hae Sik Woo) ; 최영철(Young Cheol Choi) |
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DOI |
https://doi.org/10.11112/jksmi.2018.22.3.084 |
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Keywords |
자기치유 ; 투수시험 ; 원심성형 ; GGBS Self-helaing ; Permeability test ; Centrifugal modling ; GGBS |
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Abstract |
Recently, study on self-healing materials have been performed to increase the life by repairing the damage of structures themselves, which are difficult to repair or require high maintenance costs. A water permeability test has been widely used for the evaluation of self-healing performance. However, in the self-healing performance test method, the initial crack width of the concrete greatly affects on the self-healing performance but it does not have a consistent standard. Therefore, in this study, the correlation between crack and permeability and that between time and permeability were analyzed based on crack width and permeability. In addition, since the initial crack width measured by optical microscope is not reliable, the value is derived from the Poiseuille flow and the tendency of time-permeability and time-crack width are analyzed.
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