The Structural Engineer > Archive > Volume 19 (1941) > Issues > Issue 7 > Influence of Shear Cracks on the Bond Slip in Reinforced Concrete Beams
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Influence of Shear Cracks on the Bond Slip in Reinforced Concrete Beams

IN a previous paper in the "Structural Engineer" some reference was made to the stress distribution in beams in which the bond between the concrete and the tension reinforcement had been eliminated and methods were given for calculating the stresses in both the reinforcement and concrete of such beams. The ability of the concrete to develop stress in the tension reinforcement by bond is bound up with its ability to transmit shear and, if the bond fails, the tension reforcement will behave as a tie rod. The experiments referred to in the previous paper have been extended to normal reinforced concrete beams of varying span with different types of shear reinforcement, a study of the bond being made by examining the stress distribution on vertical sections. In this paper attention is devoted to (a) the stress distribution on vertical sections after the failing load in shear or diagonal tension has been almost reached, (b) the influence of vertical stirrups, inclined stirrups and bent-up rods on the maintenance of the bond or adhesion between the tension reinforcement and the concrete. R.H. Evans

Author(s): Evans, R H