Crack Widths During Sustained Flexural Loading of Small-Scale GFRP Reinforced Concrete Beams
Small-scale concrete beams reinforced with steel bars and glass fiber reinforced polymer (GFRP) bars manu-factured with either thermoplastic or thermoset matrix materials were subjected to sustained flexural loadings while flexural crack widths were monitored. Separate sets of beams were kept under load at temperatures of 23 and 60 deg. C for time periods of 10 and 3 months, respectively. A nondimensional bond parameter that is considered to be independent of bar modulus and reflective of the tendency for bond slip was fit to the time dependent crack width data and used to compare time dependent bond behavior of the three bars. The thermo-plastic GFRP bar demonstrated the highest or nearly the highest bond slip at both test temperatures and the least variation in bond slip with temperature. The thermoset GFRP bar had the least bond slip at both test temperatures. All three types of bar had increased bond slip at the higher test temperature.
|Work Title||Crack Widths During Sustained Flexural Loading of Small-Scale GFRP Reinforced Concrete Beams|
|Creators||Charles E Bakis; Matthew A Ogden|
|Keyword||GFRP reinforced concrete; crack width; sustained loading; temperature effect|
|License||Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)|
|Work Type||Conference Proceeding|
|Publication Date||December 8, 2004|
|Geographic Area||United States|
|Source||Proc. FRP Composites in Civil Engineering (CISE 2004), R. Seracino, Ed., Balkema Publishers, Leiden, 2004, pp. 773-780. ISBN 90-5809-638-6.|
|Deposited||February 14, 2021 14:06|
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