Pull-out strengths of GFRP-concrete bond exposed to applied environmental conditions
Kabir, Muhammad Ikramul, Samali, Bijan and Shrestha, Rijun 2017, Pull-out strengths of GFRP-concrete bond exposed to applied environmental conditions, International journal of concrete structures and materials, vol. 11, no. 1, pp. 69-84, doi: 10.1007/s40069-016-0173-4.
This paper presents results of an experimental investigation on the behaviour of bond between external glass fibrereinforced polymer reinforcement and concrete exposed to three different environmental conditions, namely, temperature cycles,wet–dry cycles and outdoor environment separately for extended durations. Single shear tests (pull-out test) were conducted toinvestigate bond strengths (pull-out strengths) of control (unexposed) and exposed specimens. Effect of the exposure conditions onthe compressive strength of concrete were also investigated separately to understand the effect of changing concrete compressivestrength on the pull-out strength. Based on the comparison of experimental results of exposed specimens to control specimens interms of bond strengths, failure modes and strain profiles, the most significant degradation of pull-out strength was observed inspecimens exposed to outdoor environment, whereas temperature cycles did not cause any deterioration of strength.
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