Is there a maximum concrete strength for installation of X-U and/or X-P PAFs?

Capacity values stop at 6,000 and 8,000 respectively which seems to imply concrete strength maximums, but also indicates testing has not been performed in concrete strength beyond those values. Concrete design strength is typically specified to be within the capacity limits of the PAF, however 28-day compressive strength test results of new concrete can and have exceeded 9,000 psi.