Model
Digital Document
Publisher
Florida Atlantic University
Description
A series of experiments were performed on a single
tendon in a prestressed concrete slab for the purpose of
studying the susceptibility of the high strength steel to
brittle fracture as a result of cathodic protection. The
procedure first involved impressing an anodic current until
active potentials were recorded along the tendon length.
Subsequently, cathodic polarization of the midsection of
the tendon to -1.3 V(SCE) was effected. After a prescribed
time, the tendon was removed and sectioned into 15 ern
lengths. Each segment strand was then notched and strained
to failure, in three-point bending, in order to determine
any effect of cathodic protection on the mechanical properties
of the material. Differences in average failure loads
were compared to determine if a loss of load-bearing
capacity and brittle fracture occurred due to hydrogen
absorption.
tendon in a prestressed concrete slab for the purpose of
studying the susceptibility of the high strength steel to
brittle fracture as a result of cathodic protection. The
procedure first involved impressing an anodic current until
active potentials were recorded along the tendon length.
Subsequently, cathodic polarization of the midsection of
the tendon to -1.3 V(SCE) was effected. After a prescribed
time, the tendon was removed and sectioned into 15 ern
lengths. Each segment strand was then notched and strained
to failure, in three-point bending, in order to determine
any effect of cathodic protection on the mechanical properties
of the material. Differences in average failure loads
were compared to determine if a loss of load-bearing
capacity and brittle fracture occurred due to hydrogen
absorption.
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