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http://dx.doi.org/10.12989/sem.2019.69.4.399

Assessment of reliability-based FRP reinforcement ratio for concrete structures with recycled coarse aggregate  

Ju, Minkwan (Department of Civil and Environmental Engineering, Yonsei University)
Park, Kyoungsoo (Department of Civil and Environmental Engineering, Yonsei University)
Lee, Kihong (Department of Civil and Environmental Engineering, Hanyang University)
Ahn, Ki Yong (Department of Civil and Environmental Engineering, Hanyang University)
Sim, Jongsung (Department of Civil and Environmental Engineering, Hanyang University)
Publication Information
Structural Engineering and Mechanics / v.69, no.4, 2019 , pp. 399-405 More about this Journal
Abstract
The present study assessed the reliability-based reinforcement ratio of FRP reinforced concrete structure applying recycled coarse aggregate (RCA) concrete. The statistical characteristics of FRP bars and RCA concrete were investigated from the previous literatures and the mean value and standard deviation were employed for the reliability analysis. The statistics can be regarded as the material uncertainty for configuring the probability distribution model. The target bridge structure is the railway bridge with double T-beam section. The replacement ratios of RCA were 0%, 30%, 50%, and 100%. From the probability distribution analysis, the reliability-based reinforcement ratios of FRP bars were assessed with four cases according to the replacement ratio of RCA. The reinforcement ratio of FRP bars at RCA 100% showed about 17.3% higher than the RCA 0%, where the compressive strength at RCA 100% decreased up to 27.5% than RCA 0%. It was found that the decreased effect of the compressive strength of RCA concrete could be compensated with increase of the reinforcement ratio of FRP bars. This relationship obtained by the reliability analysis can be utilized as a useful information in structural design for FRP bar reinforced concrete structures applying RCA concrete.
Keywords
reliability-based reinforcement ratio; FRP bars; recycled coarse aggregate (RCA); replacement ratio of RCA; structural design;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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