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Title |
Correlation between Crack Width and Water Flow of Cracked Mortar Specimens Measured by Constant Water Head Permeability Test
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Authors |
최슬우(Seul-Woo Choi) ; 배원호(Won-Ho Bae) ; 이광명(Kwang-Myong Lee) ; 신경준(Kyung-Joon Shin) |
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DOI |
https://doi.org/10.4334/JKCI.2017.29.3.267 |
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Keywords |
투수시험 ; 모르타르 ; 균열폭 ; 유출수량 ; 자기치유 permeability test ; mortar ; crack width ; water flow ; self-healing |
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Abstract |
Recently, the researches of self-healing concrete technology are being carried out actively due to the advent of importance for the maintenance of concrete structures. A water permeability test has been widely used for the evaluation of self-healing performance. However, it is difficult to compare tests results since there is no standard test method related to the self-healing. A standard method for measuring the crack width does not exist neither though the self-healing performance is significantly influenced by the initial crack width. In this study, the effect of water head and crack width on water flow was investigated using a constant water head permeability test equipment . The correlation equation between the initial crack width and water flow was suggested through the regression analysis of test data, and the predicted crack widths agree well with the real crack widths measured using microscopy.
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