Journal
JOURNAL OF COMPOSITES FOR CONSTRUCTION
Volume 11, Issue 4, Pages 419-426Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)1090-0268(2007)11:4(419)
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Fifty-four bond specimens were subjected to cyclic bond tests to obtain the bond stress-slip relationships between the fiber reinforced polymer (FRP) sheets and concrete. The specimens were prepared in accordance with Japan Concrete Institute recommendations (in 1998). The tests were conducted using three experimental variables: (1) type of FRP (aramid, carbon, and polyacetal); (2) sheet layers (single layered and double layered); and (3) loading hysteresis. The bond stress-slip model was developed on a Popovics base envelope and consisted of seven empirical parameters: The maximum bond stress tau(max), the corresponding slip s(max), the curve characteristic constant a, the unloadina stiffness K, the ultimate slip s(n), the friction stress tau(fp), and negative friction stress tau(fn). Numerical analyses using the model compared well overall to the experimental cyclic responses of the specimens.
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