using lightweight SCC and seven-wire prestressing strand.
Transfer bond, as quantified by transfer length, has been
highly debated, with numerous research projects conducted
concerning various reinforcement types, reinforcement
configurations, and concrete types. Some previous research
has shown longer transfer lengths for SCC than for
conventional concrete,4–6 but little research has focused on
the bond performance of prestressing strands in conjunction
with lightweight SCC. Lightweight concrete is known
to have reduced shear strength compared with conventional
concrete, as indicated by reduction factors in the American
Concrete Institute’s (ACI’s) Building Code Requirements
for Structural Concrete (ACI 318-11) and Commentary
(ACI 318R-11),7 and an accurate transfer-length prediction
is needed for shear-strength calculations in prestressed concrete
members.