theoretically it could work, however in practice, the shear key was filled with liquid membrane material (in some areas up to 1/2" layer) creating an unacceptable condition, so I ordered to remove it
I agree that location is important. I would not use the heel side reinforcing since it's in max. tension. the toe side is not working in tension and can be used for shear-friction resistance. also the toe side rebar is favorable and spalling behind bars should not be expected.
I am questioning...
I have a question on whether the shear-friction section of ACI is applicable when a layer of liquid waterproofing membrane is applied between two concrete placements?
ACI commentary states that when using coefficient of friction µ=0.6, the shear force is resisted “primarily due to dowel action”...