| ALWC,
although known to attack sheet piles in preferential
ways, does not exclude other pile or structural steel
sections.
The symmetrical nature of
tubes would seem to preclude a preferential attack,
but although attack can be evenly circumferential it
would normally be one particular site which is attacked
establishing an anodic role. If there is a preference,
it would appear that structural sections are attacked
at the flange ends.
At this point it can be
seen that this is a ‘two-sided’ attack,
which reminds us that the notional corrosion rates generally
quoted are per side.
This is particularly applicable
to structural section constructions, fendering and the
like. It is not generally the case with tubes which
are often open only to outside attack and sheet piles
which usually restrain backfill effectively excluding
the marine environment.
Also see:
Case Histories
For more details see:
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