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This study evaluated the behavior of epoxy resin reinforced by nanoclay at three levels, on the pull-out strength of glued-in GFRP rods in glulam. For this purpose, two rods with three lengths and diameters were inserted at two opposite sides of glulam blocks which were glued by epoxy resin. Samples underwent tensile testing as well as the measurement of their tensile strength and shear strength. The results showed that the strength of bonding increased with the addition of a low amount of nanoclay. Furthermore, the amount of nanoclay, rod length and diameter could not significantly affect simultaneously, the performance and strength of glued-in GFRP rods.