The working principle of grouting sleeve holder is to insert the steel bar into the metal sleeve and inject high-strength, early-strength, and slightly expanded grouting material into the sleeve, and connect the steel bar and the sleeve by relying on the bonding and bite action between the materials. Specifically, the steel bar is inserted from both ends of the sleeve, and the grouting material is filled between the sleeve and the steel bar, and the steel bar is connected through the force transmission of the grouting material. The grouting material forms a large positive stress between the inner wall of the sleeve and the steel bar, and the rough surface of the steel bar produces a large friction force, thereby transmitting the axial force of the steel bar.
