Behaviour of polymer grouted splices under increasing tensile load

This paper presents the behavior and performance of polymer grouted splices under increasing direct tensile load. A spiral is utilized to confine the splicing of two discontinued bars which are interlocked within the spiral through the utilization of high strength polymer grout. The bar embedded lengths and the spiral diameters of the grouted splices were varied in order to investigate their effects on the performance of the polymer grouted splices. The performance was evaluated based on the load-displacement relationship, ultimate loading capacity and failure mode. The best performance of polymer grouted splices was obtained with the spiral diameter of 23mm and embedment length of 125mm in which with these parameters the grouted spiral is able to develop the full tensile strength of the spliced bars