| Issue |
MATEC Web Conf.
Volume 199, 2018
International Conference on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR 2018)
|
|
|---|---|---|
| Article Number | 07009 | |
| Number of page(s) | 4 | |
| Section | Repair Materials and Systems | |
| DOI | https://doi.org/10.1051/matecconf/201819907009 | |
| Published online | 31 October 2018 | |
Rehabilitation of Marine Concrete Structure with Under-Water Hydrodemolition and Sprayed Concrete
1
Professor, Civil Engineering Department, Kangwon National University, S. Korea
2
Graduate Student, Civil Engineering Department, Kangwon National University, S. Korea
3
CEO, Daesang E&C, S. Korea
4
Senior Research Fellow, Korea Institute of Construction Technology, S. Korea
* Corresponding author: kkyun@kangwon.ac.kr
Hydrodemolition is a method of surface preparation using high-pressure water jets. Hydrodemolition cutting depth is dependent on the length of time that the water jet is directed at the concrete surface that determines the depth of removal, and contact time is controlled at the robotic cutter. During hydrodemolition concrete removal, the cement matrix is removed from the aggregate. This paper describe on the test results of under-water hydrodemolition which was done on a prefabricated concrete basin. A very simple and economic method for repairing the damaged concrete structures is a using a sprayed concrete, which is some times called as shotcrete. This paper, also, describe on the test results of sprayed concrete for the rehabilitation of marine concrete structure.
© The Authors, published by EDP Sciences, 2018
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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