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1 2015

1 Krassowska J.

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Effect of fibers reinforcement on shear capacity of double span reinforced concrete beams

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Krassowska J.

Fifteen double-span reinforced concrete beams (RC) with the addition of dispersed reinforcement were examined to determine the effect of the reinforcement on the shear resistance at the support area. Asalt fibers, whose mechanical properties (especially high tensile strength) have a beneficial effect on the behavior of components under load were used. Beams were subjected to a constant load forces gathered in the middle of the span of each bay. The study aimed to determine the deflection of beams, measuring the crack width perpendicular and diagonal capacity and determination of shear and/or bending. Almost all the beams have reached a shear failure mode. The addition of basalt fiber in each of a series of research results in diverse growth destructive force beam and a corresponding increase in the lateral force on the supports. The maximum strength increase of at 54%, as compared to the reference beam without the fibers was observed for the beam A-III 50/50.