Abstract
Abstract In reinforced concrete structures, providing sufficient anchorage length in the connections and lap-spliced bars (LSB) is essential. In this research, LSB in steel fibre-reinforced concrete (SFRC) beams under static and loading/unloading cycles are investigated. The ductility of fibre-reinforced concrete (FRC) beams with LSB is also studied. For that purpose, ten beams (width, height and length of 150 mm 200 mm and 2300 mm, respectively) with different lap-spliced length (LSL) of tension rebars and different percentages of steel fibres (SF) were manufactured and tested. Four beams are tested under static loads and six others under loading/unloading cycles. Also, one specimen was selected as control, with no LSB and SF. Other nine specimens were made using SF at 0%, 1% and 2% by volume. In these tests, the flexural resistance, maximum displacement at mid-span, ductility and dissipated energy were evaluated. It was found that by adding 2% SF, the LSL could be reduced by at least 20%, without a reduction of the ductility and bearing-capacity. The behaviour of SFRC-beams with LSB was superior to that of beams with no SF and LSB.
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