Device and method for detecting cohesive force of concrete and plain round steel bar

The invention discloses a device and a method for detecting cohesive force of concrete and a plain round steel bar, and the device comprises a universal testing machine, and also comprises a test piece processing assembly and a test piece clamp; the test piece machining assembly comprises a steel bar fixing frame and a mold. According to the invention, a cohesive force detection test piece is self-made through the processing assembly, a reinforcing steel bar fixing frame is arranged at the top of the mold to adjust and fix a reinforcing steel bar, concrete is injected into the mold, and two groups of test pieces are self-made in this way after the concrete and the reinforcing steel bar are condensed to form the test pieces and are respectively cured in two curing environments; the method comprises the following steps of: preparing a plurality of test pieces, mounting the test pieces on a universal testing machine through a test piece clamp, detecting the cohesive force, calculating the cohesive force of each