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http://dx.doi.org/10.4334/JKCI.2006.18.3.303

A Comparative Study on the Testing Methods for the Analysis of Tensile Strength of GERP Rebars  

You, Young-Chan (Korea Institute of Construction Technology)
Park, Ji-Sun (Korea Institute of Construction Technology)
You, Young-Jun (Korea Institute of Construction Technology)
Park, Young-Hwan (Korea Institute of Construction Technology)
Publication Information
Journal of the Korea Concrete Institute / v.18, no.3, 2006 , pp. 303-312 More about this Journal
Abstract
The main objective of this experimental study is to examine the feasibilities of each testing method with various kinds of grip systems for the analysis of tensile strength of GFRP(glass fiber reinforced polymer) reinforcing bars. Three types of grip systems were examined such as resin-sleeved pipe-type grip proposed by CSA(Canadian Standard Association), frictional resistance type metal grip by ASTM(American Standard for Testing and Materials) and wedge-inserted cone-type grip normally used in prestressing tendons. Also, mechanical properties of GFRP rebars with different surface deformations were investigated for each different type of testing grip used in this study. All testing procedures including specimens preparation, set-up of test equipments and measuring devices were made according to the CSA S806-02 recommendations. From the test results, it was found that the highest tensile strengths of GFRP rebars were observed when tested by resin-sleeved grip system regardless of their different surface deformations. But tensile strengths of GFRP rebars by ASTM grip system are only 10% less than those by CSA grip system. On the other hand, CSA grip is not only difficult to prepare but also not disposable. Therefore, ASTM grip system is recommended as a practical alternative to estimate the tensile strength of GFRP rebars.
Keywords
GFRP(glass fiber reinforced polymer) rebar; testing methods; tensile strength; grip system; CSA grip;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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