Structural Performance of Self-compacted Concrete Beams with Rectangular Perforations

Kassem, Nesreen; Afefy, Hamdy; Taher, Salah; Ibrahim, Hamida

doi:10.21608/asge.2022.153615.1027

Structural Performance of Self-compacted Concrete Beams with Rectangular Perforations

Document Type : Original Article

Authors

¹ Structural Engineering Department, Faculty of Engineering, Tanta University.

² Structural Engineering Department, Faculty of Engineering, Tanta University, Egypt.

10.21608/asge.2022.153615.1027

Abstract

This paper verifies experimentally the structural performance of self-compacted perforated beams having

rectangular perforations. Three perforations sizes have been considered; namely, 200 x 200, 200 x300 and 200

mm x400 mm, respectively. The perforation depth to the beam total depth was kept constant for the three sizes

(0.50). These perforations correspond to mass loss percentages of about 24, 29 and 31%, respectively,

compared to that of the solid beam. Thus, one solid control beam along with three perforated beams having the

three perforation sizes were prepared and tested up to complete failure. The perforation sizes of 200x200 and

200x300 enabled the perforated beams to manifest higher ultimate capacities by about 11% and 1.2%

compared to that of the solid beam. On contrary, the perforated beam of perforations dimensions 200 x 400

showed lower ultimate capacity by about 17% compared to that of the solid beam. In addition, the sharp edges

of the rectangular perforations enforced the perforated beams to be failed due to shear at the first web-post for

all perforated beam.

Keywords