Stability of Tensile Cracks in Prestressed Concrete Beams

by I. O. Oladapo,

Serial Information: Journal of the Structural Division, 1969, Vol. 95, Issue 1, Pg. 17-31

Document Type: Journal Paper


An analytical study is presented of the problem of crack stability in prestressed concrete flexural members. The effect of variations in the steel ratio and the initial level of prestress are considered, and the investigation covers both rectangular and flanged sections. It is shown that the level of prestress influences the instability of beams due to flexural cracking. The higher the level of prestress, the shorter the range of crack instability. Increases in reinforcement ratio also act to stabilize the development of cracks at all stages. In general, T-sections have the least problem with crack instability.

Subject Headings: Cracking | Concrete beams | Prestressing | Ultimate strength | Tension members | Flexural strength | Prestressed concrete | Steel

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