SHEAR TRANSFER IN REINFORCED CONCRETE-RECENT RESEARCH

THE WAY IN WHICH CONCRETE STRENGTH, SHEAR PLANE CHARACTERISTICS, REINFORCEMENT, AND DIRECT STRESS AFFECT THE SHEAR TRANSFER STRENGTH OF REINFORCED CONCRETE IS DEMONSTRATED. FUNDAMENTAL BEHAVIOR OF TEST SPECIMENS UNDER LOAD IS REPORTED, AND HYPOTHESES TO EXPLAIN THE BEHAVIOR ARE DEVELOPED. IT IS CONCLUDED THAT SHEAR-FRICTION PROVISIONS OF ACI 318-71 GIVE A CONSERVATIVE ESTIMATE OF SHEAR-TRANSFER STRENGTH BELOW THE STATED LIMIT OF 800 PSI. A DESIGN EQUATION TO DEVELOP HIGHER SHEAR TRANSFER STRENGTH IS PRESENTED. /JPCI/