Air Leakage Characteristics in Reinforced Concrete

  title={Air Leakage Characteristics in Reinforced Concrete},
  author={S. Rizkalla and B. L. Lau and S. Simmonds},
  journal={Journal of Structural Engineering-asce},
Eight reinforced concrete specimens were fabricated and subjected to tensile membrane forces and air pressure to study the air leakage characteristics in cracked reinforced concrete members. A mathematical expression for the rate of pressurized air flowing through an idealized crack is presented. The mathematical expression is refined by using the experimental data to describe the air flow rate through any given crack pattern. Graphical charts are also presented for the calculation of the air… Expand

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Proof of Leakage Rate of a Concrete Reactor Building
Cracking Behavior of Reinforced Concrete Members,
  • Proceedings of the Annual Conference of Canadian Society for Civil Engineering, May 27-28,
  • 1982
Leakage of Pressurized Gases through Cracks in Reinforced Concrete Structures,
  • Structural Engineering Report, Dept. of Civ. Engrg., Univ. of Manitoba,
  • 1982
An inelastic analysis of the Gentilly-2 secondary containment structure
The Prediction of Crack Widths in Hardened Concrete," The Structural Engineer
  • Vol. 57A,
  • 1979