Feasibility study on the fatigue characteristics of the reinforced CFS with selfhealing repair methods for RC slabs
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초록
Japan’s Ministry of Land, Infrastructure, Transport and Tourism surveyed and inspected bridges with the goal of increasing the lifespan of the bridges and to downwardly standardize bridge maintenance costs, and established the “Highway Bridges Long Life Repair Plan.” According to the results of survey and inspection, the most serious damage to RC slabs is caused by fatigue deterioration, which results from the driving loads of large-sized vehicles, and aging of materials. In response to this, adhesion reinforcement using carbon fiber sheet is being adopted. Therefore, in this study, specimens with bottom side CFS adhesion reinforcement on the bottom surface of the RC slab were manufactured. Then, fatigue tests under running wheel loads were conducted, and thus fatigue resistance was evaluated using the specimens. In addition, new RC slab supplementation technique was suggested.
Abstract
Japan’s Ministry of Land, Infrastructure, Transport and Tourism surveyed and inspected bridges with the goal of increasing the lifespan of the bridges and to downwardly standardize bridge maintenance costs, and established the “Highway Bridges Long Life Repair Plan.” According to the results of survey and inspection, the most serious damage to RC slabs is caused by fatigue deterioration, which results from the driving loads of large-sized vehicles, and aging of materials. In response to this, adhesion reinforcement using carbon fiber sheet is being adopted. Therefore, in this study, specimens with bottom side CFS adhesion reinforcement on the bottom surface of the RC slab were manufactured. Then, fatigue tests under running wheel loads were conducted, and thus fatigue resistance was evaluated using the specimens. In addition, new RC slab supplementation technique was suggested.
참고문헌 (8)
- Chiba prefecture, "long-life repair plan report, Chiba environment and road maintenance unit", ~ (2010)
- Japan Road Association, "Specifications for highway bridges • East commentary", ~ (2002)
- Ministry of land, Infrastructure, Transport and Tourism, "Trends in long-life repair plans for municipalities", ~ (2011)
- Japan Society of Civil Engineering, "Highway bridge slab maintenance manual", ~ (2012)
- 안태호, "Effect of self-healing agents on inorganic crack repair materials for concrete infrastructures", Journal of Ceramic Processing Research, 16(1), pp.117~123 (2015), 세라믹공정연구센터[DOI]
- "FORCA Tou sheet • Strand sheet bottom side plan construction bill of quantity", Nippon Steel & SumikinMaterials Co., LTD, ~ (2013)
- "The design and construction guidelines (plan) for the repair and reinforcement of highway bridge concrete parts using adhesive-bottom side carbon fiber sheets (CFS)", Public Worls Research Institute JAPAN, ~ (1999)
- M. Shigeyuki, "Highway bridge slab design • construction and maintenance", ~ (2007)