Title: Evaluation of Minimum Shear Reinforcement Requirements for Higher Strength Concrete

Author(s): Guney Ozcebe, Ugur Ersoy, and Tugrul Tankut

Publication: Structural Journal

Volume: 96

Issue: 3

Appears on pages(s): 361-368

Keywords: beams (supports); cracking (fracturing); ductility; high-strength concretes; shear strength; stirrups

DOI: 10.14359/669

Date: 5/1/1999

Abstract:
This paper presents an evaluation on the minimum shear reinforcement requirements given in the ACI, Canadian, and Turkish codes for high-strength concrete. Thirteen beams having the minimum shear reinforcement required by ACI 318-83, the Turkish Code, and the equations proposed in this paper were tested. Concrete strength varied between 60 and 80 MPa (8700 and 11,600 psi). For high-strength concrete (f c > 69 MPa), the minimum shear reinforcement requirements of the Turkish Code and ACI 318-95 are not very different from one another. Similarly, requirements of the 1994 Canadian Code (CSA A23.3-94) are not too different from the proposed equation. In light of the test results, the adequacy of code requirements are discussed. Emphasis is given to reserve strength, ductility, and cracking.