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Appl. Sci. 2016, 6(9), 253; doi:10.3390/app6090253

Artificial-Crack-Behavior Test Evaluation of the Water-Leakage Repair Materials Used for the Repair of Water-Leakage Cracks in Concrete Structures

1
Institute of Biomedical Engineering and Biomaterials Program of Architecture, Seoul National University of Science & Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Korea
2
School of Architecture, Seoul National University of Science & Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Dimitrios G. Aggelis
Received: 1 August 2016 / Revised: 30 August 2016 / Accepted: 31 August 2016 / Published: 9 September 2016
(This article belongs to the Section Materials)
View Full-Text   |   Download PDF [11484 KB, uploaded 9 September 2016]   |  

Abstract

There are no existing standard test methods at home and abroad that can verify the performance of water leakage repair materials, and it is thus very difficult to perform quality control checks in the field of water leakage repair. This study determined that the key factors that have the greatest impact on the water leakage repair materials are the micro-behaviors of cracks, and proposed an artificial-crack-behavior test method for the performance verification of the repair materials. The performance of the 15 kinds of repair materials that are currently being used in the field of water leakage repair was evaluated by applying the proposed test method. The main aim of such a test method is to determine if there is water leakage by injecting water leakage repair materials into a crack behavior test specimen with an artificial 5-mm crack width, applying a 2.5 mm vertical behavior load at 100 cycles, and applying 0.3 N/mm2 constant water pressure. The test results showed that of the 15 kinds of repair materials, only two effectively sealed the crack and thus stopped the water leakage. The findings of this study confirmed the effectiveness of the proposed artificial-crack-behavior test method and suggest that it can be used as a performance verification method for checking the responsiveness of the repair materials being used in the field of water leakage repair to the repetitive water leakage behaviors that occur in concrete structures. The study findings further suggest that the use of the proposed test method makes it possible to quantify the water leakage repair quality control in the field. View Full-Text
Keywords: concrete structure; water-leakage crack; crack (substrate) movement; repair materials; substrate movement test method; permeability test concrete structure; water-leakage crack; crack (substrate) movement; repair materials; substrate movement test method; permeability test
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MDPI and ACS Style

Kim, S.-Y.; Oh, S.-K.; Kim, B. Artificial-Crack-Behavior Test Evaluation of the Water-Leakage Repair Materials Used for the Repair of Water-Leakage Cracks in Concrete Structures. Appl. Sci. 2016, 6, 253.

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