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(1) Steel and reinforced concrete structures require
protection from the corrosive effects of chlorides
found in seawater. Any coatings used must be suitable
for application in wet environments with less than
ideal surface preparation.
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Cementitious Coating 851 is easily applied
to damp concrete with excellent adhesion. It cures
to form a dense coating with high levels of protection
from water, oxygen and chloride ion pe.netration.
In terms of water permeability a 2mm coating of
851 is equivalent to 1m of good quality concrete
and it has a proven track record in some of the world’s
most demanding marine environments. Cemprotec E942,
a cement and epoxy modified polymer coating, can be
successfully sprayed directly onto steel substrates
in damp conditions. Its impressively high resistance
to the ingress of the fuels for corrosion and inherent
alkalinity will ensure it provides stand-alone anti-corrosion
protection.
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(2) Corrosion of steel reinforcement and spalling
of concrete in splash zones due to continual wetting
and drying of surfaces and the action of salt spray.
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Monomix can be hand applied to re-profile small
areas of damage and a special grade Monomix WS,
is available for application by wet process in larger
areas.
Cemprotec MCI® 2020 can be applied to concrete
faces and it diffuses through the structure to form
a monomolecular protective layer on the reinforcement
to protect it from corrosion.
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(3) Corrosion
of steel reinforcement and spalling of concrete in
tidal zones due to continual pounding and erosion
from wave action. The opportunity to carry out repairs
is limited to tidal windows.
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Marine Mortar is suitable for the repair of
horizontal and vertical surfaces in marine environments.
It is perfectly adapted to areas subject to early
immersion and provides excellent wash-out resistance
against wave action.
Monopour, a pourable grout or micro-concrete,
can be easily applied to re-cast large areas of damaged
concrete and offers long term, high strength properties.
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