The Cathodic Protection Technique
In the history of buildings and
architectures it was often witnessed that metal dowels and other cramps were
thus built with having a traditional masonry structure to be on the run with
securing stones which may support the building from the happenings of a
displacement such as of copings, cornices etc. Thus, in the olden days, the use
of ordinary ashlar walls were to be remained at peace where a usual consistency
of a thin faced fine dressed stonework would have done the work just with some
bricks or backing up with some rubble where the cramps were thus adjusted to
have a stronger backbone going up to the core of the building with cramps being
the cause at the end of the day which would result in the fall of the
buildings.
Hence, in the 19th century then to
support these cramps wrought iron was build which was a susceptible feature
against the process of corrosion which were to be exposed to air and moisture
where the vertical joints were penetrated deeply and usually the shallow bead
of the bottom was to be found of rainwater, cracks or decaying which would go
around and inside the pipe easily which resulted in cramps and the creation of
rust as well which eventually expanded the rust exerting pressure on the stone
below which would eventually crack which resulted in the fall of the building.
This process indeed required a conventional
Structural Repairs
technique which would fight the corrosion and cramps altogether.
Thus, the idea of Cathodic
Protection to Buildings came into existence where the cathodic
protection mainly was a technique which was used to suppress the process of
corrosion on the metal structures. This process was indeed primarily used by
the marine navy for many years as their ships are indeed submerged in the water
and all the other oil pipelines and tanks are built deep down in the water
where the corrosion protection was indeed required. The Cathodic
Protection to Buildings technique was used in the navy at that period
of time for 2 decades which then gave the reinforcement to apply the same in
buildings and towers. The process has also been applied to iron and steel
embedments rooted inside the brick, stone and masonry heritage buildings as
well.
The process of cathodic protection mainly
works on the principle that the process of corrosion is mainly an
electrochemical reaction which is known to be a singular part of iron piece or
steel in the moment which goes up to and acts like an anode while having the
adjacent metals acting as a cathode. Thus as the anode corrosion starts the iron
thus gives up its electrons and thus forms a soluble iron ion whereas the
cathode, the electrons are thus released by the process of corrosion which goes
ahead and combines with oxygen and water to form a hydroxide ion. Thus in the
cathodic system thus a metal requires to be protected which is then forced to
start act like a cathode with one side to be on the reaction surface of the
metal with the another to be highly unaffected by the reaction possible where
prevention of the corrosion process is thus to be taken. Hence, when one needs
to protect the structural iron and the steel thus an achievement of applying it
to the small DC electric currents is done through the building material. The
whole process is a bit time consuming but indeed very important to jot down the
possible risks in the future.
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Road No. 9, Wagle Estate, Thane (West), Maharashtra-400604
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