期刊
COMPOSITES PART B-ENGINEERING
卷 51, 期 -, 页码 19-27出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2012.12.012
关键词
Carbon-carbon composites (CCCs); Strength; Analytical Modeling; Repair and retrofit
资金
- Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) Grant
- Korea government Ministry of Knowledge Economy [20104010100520]
A polymeric hybrid composite system made of high-performance concrete (HPC) and an innovative carbon/epoxy reinforced polymer (CFRP) unidirectional laminates was proposed as a retrofit system to enhance flexural strength and ductility of reinforced concrete (RC) slabs. The effectiveness of the proposed system was confirmed through experimental evaluation of three full-scale one-way slabs having two continuous spans. In this study, the results of the loading tests for the hybrid high-performance retrofit system are presented and discussed. Design limits to derive a flexural failure of a continuous RC slab strengthened with the hybrid retrofit system are extracted. Using the proposed design limits, the procedure of a flexural failure design for a continuous RC slab strengthened with the hybrid retrofit system is demonstrated with numerical examples for two types of the retrofit systems with respect to overlay strength. The flexural failure design limits can be extended for flexural and shear strengthening design with externally bonded FRP to ensure flexure failure for a continuous flexural members. (c) 2013 Elsevier Ltd. All rights reserved.
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