The experimental investigation deals with the quasi-static and fatigue behavior of the bond between GFRP (glass fibre reinforced polymer) rebars and concrete. Eccentric pull-out test set-up was adopted to measure the effect of concrete cover and concrete mechanical properties. For cycling tests, the ratio R of the maximum load in the cycle to the static strength was also varied to estimate the fatigue re-sistance under different load levels. GFRP rebars were considered of diameter 8 mm. Specimens were cast with two different concrete classes and bars were positioned according to two concrete covers. Cyclic loading was performed with two load levels. Quasi-static results show similar shear strength for the different concrete covers and the shear strength increases with the concrete mechanical proper-ties. Cyclic tests provide a fatigue life exceeding one million cycles for the minimum load level con-sidered while for the maximum the number of cycles to failure extremely increase considering the higher concrete quality.
|Titolo:||Experimental investigation of the static and fatigue bond behaviour of GFRP bars and concrete|
|Data di pubblicazione:||2016|
|Appare nelle tipologie:||04.1 Contributo in Atti di convegno|
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|2016_fib_Veljkovic.pdf||fib 2016 paper||Publisher’s version||Accesso riservato|