Shear Transfer in Concrete and Polymer Modified Concrete Members Subjected to Shearing Loads

Abstract

Abstract Experiments were conducted to evaluate the shear transfer capacity of polymer modified concrete (PMC). The experimental program was designed to verify the general theory of shear transfer mechanism for concrete and to evaluate the necessary constants of the theoretical expressions. The general theory presented covers structural members with (1) no shear reinforcement, (2) moderate shear reinforcement, and (3) high shear reinforcement. Four groups of specimens were tested. Group A specimens were used to investigate the relation between intrinsic bond shear transfer capacity and the strength of the composite materials (PMC and concrete). No transverse steel was used in these specimens. Group B specimens contained various amounts of shear reinforcement at the shear interface. Group C specimens were cast monolithically using ordinary concrete to serve as control specimens. Group D were control specimens made up of cast-in-place concrete over precast concrete. They were designed to evaluate the “apparent cohesion” of such elements, for the purpose of comparison with Group A specimens.