Non-Recoverable Creep Compliance (Jnr)

(Jnr) is the non-recoverable creep compliance as described in AASHTO T 350, ASTM D7405 and EN 16659. It is calculated by the residual strain in a specimen after a creep and recovery cycle divided by the stress applied, reported in k Pa-1.
It can be considered a representation of the “size” of a rut in a pavement.