Shear behavior of slurry infiltrated fiber concrete beams

الملخص EN

An experimental study has been carried out to investigate the shear behavior of slurry infiltrated fiber concrete (SIFCON) beams.

Thirteen specimens have been tested with different steel fiber volume of fractions (Vf), different shear span-depth ratios, different fiber shapes, and different sizes of beams.

Beams have been tested under four-point loading.

The results demonstrated that the nominal shear stress at diagonal cracking and the ultimate shear strength increased with the increase of Vf or the decrease in shear span-depth ratio.

Compared to plain and corrugated fibers, hooked-end fiber was proved to give the highest shear strength of SIFCON beams.

Less size effect was observed for SIFCON beams than conventional ordinary concrete (RC) beams.

Using a simplified analytical model, a design equation was deriven to calculate the shear strength of SIFCON as well as fiber reinforced concrete (FRC) beams.

The comparison between the proposed equation and the experimental results was proven to give good agreement.