University of Saskatchewan, Department of Civil & Geological Engineering

Six double pullout specimens and two wall splice specimens, all reinforced with 15 mm diameter deformed steel bars with 300 mm lap splice lengths, were tested in this investigation. One half of the specimens of each type were constructed with contact lap splices, where the spliced bars were located in the same core, while the other half had non-contact lap splices, where the lapped bars were located in adjacent cores. All specimens were constructed using concrete blocks with all cores fully grouted. The reinforcing bars in the double pullout and wall splice specimens with contact lap splices generally yielded. In contrast, the double pullout and wall splice specimens with non-contact lap splices attained failure loads of approximately 52% and 65% of the theoretically calculated yield loads, respectively. Non-contact lap splices therefore appear to perform better in wall splice specimens than in double pullout specimens.

Key words
double pullout specimen, wall splice specimen, lap splice length