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had O |
previously O |
lead O |
to O |
up O |
to O |
5 O |
zones O |
per O |
beam O |
, O |
with O |
multiple B-Process |
layers I-Process |
of I-Process |
mesh I-Process |
to O |
achieve O |
the O |
design O |
current O |
density O |
. O |
On O |
review O |
of O |
the O |
data B-Material |
the O |
operating O |
current O |
density O |
was O |
similar O |
in O |
all O |
zones O |
and O |
so O |
this O |
was O |
reduced O |
to O |
a O |
single O |
zone O |
per O |
beam O |
. O |
The O |
encapsulation B-Process |
was O |
susceptible O |
to O |
ASR B-Process |
and O |
contained O |
post O |
tensioning O |
and O |
so O |
it O |
was O |
decided O |
to O |
use O |
a O |
galvanic B-Material |
system I-Material |
based O |
on O |
Galvashield B-Material |
CC I-Material |
anodes I-Material |
from O |
Fosroc O |
. O |
Our O |
design O |
did O |
not O |
include O |
an O |
option O |
to O |
allow O |
depolarization B-Task |
of I-Task |
the I-Task |
galvanic I-Task |
system I-Task |
, O |
but O |
the O |
contractor O |
supplied O |
one O |
, O |
such O |
that O |