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http://dx.doi.org/10.11112/jksmi.2014.18.3.108

Prediction of Long-term Residual Inter-laminar Shear Strength of Thermally Damaged GFRP Rebar  

Kim, Min-Cheol (경성대학교)
Moon, Do-Young (경성대학교)
Kim, Sung-Do (경성대학교)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.18, no.3, 2014 , pp. 108-115 More about this Journal
Abstract
Mechanical properties of GFRP rebars significantly decrease due to high temperature as well as alkalinity of concrete. This study focuses on the long-term reduction of inter-laminar shear strength of pre-damaged GFRP rebars by high temperature. For this investigation, bare GFRP rebar specimens were exposed to $270^{\circ}C$ for 1hour and then immerged in alkali solution for several months and tested in shear. No thermally conditioned specimens were immerged and tested for the comparisons. In results, the reduction of thermally damaged GFRP rebars was greater than that of no thermally damaged ones. Based on the accelerated experimental test data, an polynomial equation is presented for prediction of long-term residual inter-laminar shear strength of GFRP rebars previously damaged by high temperature.
Keywords
GFRP reinforcement; Thermal damage; Effect of alkalinity; Inter-laminar shear strength; Accelerated test;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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