Title: Structural Behavior of Double-T Prestressed Slabs with High Quality Welded Wire Mesh

Author(s): Salvatore Russo

Publication: Structural Journal

Volume: 96

Issue: 6

Appears on pages(s): 972-980

Keywords: ductility; prestressed concrete; tensile stress; welded wire mesh.

DOI: 10.14359/772

Date: 11/1/1999

Abstract:
This study proposes to assess the effect of using high-ductility welded wire mesh on the structural behavior under deflection of thin-walled TT-sections made of prestressed reinforced concrete. The investigation is based on a comparison examining the behavior up to failure of two TT-sections undergoing a bending test in which the percentage of both the normal and the prestressing reinforcement was identical with the only difference between the sections being in the mechanical features of the welded wire mesh involved. Behavior in serviceability conditions and under shear stresses is analyzed using the conventional calculation formulas. With the aid of the mathematical models recommended by ACI and the CEB Model Code ‘90, particular attention is paid to evaluating the degree of deformability of the two elements. The research shows that the maximum moment reached with high-ductility welded wire mesh is higher than the beam with normal mesh. The same trend is pointed out for deflection, with ductile failure modalities.