length, of prestressing strands cast in prestressed concrete
members containing lightweight SCC and normalweight
SCC. Measured values were also used to examine
the applicability of the ACI 318-11 and AASHTO LRFD
specifications code predictions for transfer length. Average
transfer lengths measured using concrete surface
strain for lightweight SCC members having a compressive
strength of 4000 psi (28 MPa) at prestress release
were shorter than those predicted using the ACI 318-11
and AASHTO LRFD specifications equations. Average
transfer lengths for lightweight SCC members having a
compressive strength of 6000 psi (41 MPa) at prestress
release were substantially less than those predicted using
the ACI 318-11 and AASHTO LRFD specifications equations.
The measured high-strength shale transfer lengths
were approximately half of the predicted values.