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http://dx.doi.org/10.14190/JRCR.2018.6.1.59

Resistance to Chloride Attack of FRP Hybrid Bar After Freezing and Thawing Action  

Ryu, Hwa-Sung (Hanyang Experiment and Consulting, Hanyang University ERICA)
Park, Ki-Tae (Korea Institute of Civil engineering and building Technology)
Yoon, Yong-Sik (Department of Civil Engineering, Hannam University)
Kwon, Seung-Jun (Department of Civil Engineering, Hannam University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.6, no.1, 2018 , pp. 59-65 More about this Journal
Abstract
RC(Reinforced Concrete) structures are exposed to various exterior conditions, and the performances of both chloride resistance and freezing/thawing action are evaluated for those exposed to corrosive environment-sea shore. Recently developed FRP Hybrid Bars which is coated with glass fiber and epoxy with core steel has an engineering advantage of higher Elasticity than FRP rod. In this work, corrosion resistance, weight loss, and bond strength are evaluated for the FRP Hybrid Bar tested through freezing/thawing action for 300cycles. The double coated FRP Hybrid Bar shows the least weight loss without defection due to freezing/thawing action. Bond strength in FRP Hybrid Bar increases to 120% of normal steel through torturity effect with Si-coating. Bond strength in normal steel shows 0.86~0.89times in 3-day corrosion acceleration and 0.35~0.38times in 5-day corrosion acceleration, however, that in FRP Hybrid Bar shows little changes in bond strength before and after freezing/thawing action.
Keywords
FRP Hybrid Bar; Corrosion; Freezing and thawing action; Accelerated test; Bond strength; Epoxy-coating;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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