Euronavy References - Protective Coatings, Protective & Marine
Industrial Protective Coatings And Their Proper Usage
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Transcript of Industrial Protective Coatings And Their Proper Usage
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An Introduction To
The Different Types
Of Corrosion
Protection
3
How AbrasiveBlasting Works To
Protect Against
Corrosion
5
The Basics Of Proper
Concrete Repairs
7
What Do Painting
Contractors Do And
How Can They Help
You?
10
Different Types OfIndustrial Protective
Coatings And Their
Uses
12
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An Introduction To The Different Types Of Corrosion
Protection
One of the common and concerningproblems of a building structure is
corrosion it weakens the
composition of metals, therefore
compromising their quality. There are
different factors that contribute to the
appearance of this problem but
determining these factors makepreventive and protective methods
easy to incorporate.
There are different types of corrosion
protection and each of them
particularly addresses the special
nature of corrosion and the level of
protection required. The first type is active corrosion protection which
basically halts the continuance or development of corrosion straight
from the foundation of the materials. Its a combination of using
corrosion-resistant compounds and inhibitors such as oxidation-
resistant sealants.
The second type is passive corrosion protection which is considered
the least effective and most primitive as it is simply the utilisation of a
protective material often plastic, film, or some weak compound
that can easily be torn off or peeled away. Since most corrosive
agents are aggressive and can eventually penetrate such protective
layers, this type is used mainly as an initial protective effort.
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Permanent corrosion protection is the third type. What this does is
provide the most effective protective coating that not only coats the
material but also strengthens its composition. This permanent
protective coating is incredibly versatile as it can make the materialresistant to the different corrosive agents caused by various chemical
elements, which are usually the result of environmental influences
such as moisture, dry air, acidity, et cetera. Epoxy coating is
considered the most widely-used permanent corrosion protection;
epoxy is chemically stable and the types created nowadays are
incredibly durable and can withstand compromising exposures
beyond corrosion. Pre-grouted bars are also incredibly effective andare used as a barrier against corrosion attacks in highly aggressive
soils rich in both acidic and alkaline components. Other typically used
corrosion protection materials are extruded polyethylene and hot dip
galvanised bars.
The last type is temporary corrosion protection. This makes use of
the desiccant method, protective coating method, and the VCImethod. What this type does is directly resist the corrosive action of
a particular chemical element. The protection is completely based on
the nature of the corrosive. An example of the protective coating
method is often used in seaside environments: since saltwater creates
rust on the surface of metal structures, a saltwater resistant agent is
applied on the metal to counter the effects of seawater. The
desiccant method, on the other hand, is used to prevent moisturefrom weakening the composition of the material its protecting (just
like those little packets that come with designer bags), while the VCI
method suppresses chemical reactions and is considered the opposite
of corrosive catalysts.
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Some people say that abrasive blasting originated from the concept of
using sand paper to rid materials of surface build-up or roughness.
For metals, however, a steel brush was often used to get rid of rust.
Whether the idea is true or not, all these methods pretty muchproduce the same outcome. Abrasive blasting, however, is a more
sophisticated and time-efficient process and it produces the best
results as far as corrosion treatment is concerned.
Most of the time, after abrasive blasting is carried out and rust is
completely removed; a sealant is spread on the surface to make sure
that the material is completely protected from the elements that
cause corrosion. There are other people, however, who use abrasive
blasting as a complete maintenance method instead of the first step
in corrosion treatment; at the first appearance of rust on the surface,
the compromised spot is instantly subjected to abrasive blasting to
stunt the spread. There are those who worry that frequent abrasive
blasting thins the material but this really depends on the blasting
method used.
Abrasive blasting comes in varying processes and some of them are
bead blasting, soda blasting, and sand blasting. Bead blasting
removes deposits by applying ultra-fine glass beads at high pressure
without damaging the surface of the material. Sand blasting is often
used as a cleaning method; it effective rids the surface of grime and
other impurities to create a smooth finish that can be followed up
with permanent protective coating. Lastly, soda blasting is a non-
destructive rust removal method typically used by car restoration
businesses.
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The Basics Of Proper Concrete Repairs
If you would travel in Southeast Asia, you would be greatly surprised
at the number of on-going road construction and repairs that you willcome across within a five-mile radius. Some foreigners get the idea
that the countries in this region are all about development and
improvement; however, the usual situation is that concrete
construction methods in these countries do not deliver quality that
can withstand the intense wear roads are subjected to. And if youre
from a country like Japan, Australia, or the United States, you would
probably wonder why the ministry of public works and highways ofthose countries wont use the methods that have been proven to
produce good quality roads. Well, there are definitely other factors
involved, but one of the effective ways of knowing if your local
government is just wasting your taxes from carrying on a road
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construction or repair program thats destined to fail is to know the
basics of proper concrete repairs.
If the concrete is made of top-quality cement, repairing it using
asphalt is always a bad idea. Asphalt is not a stable material and it
easily cracks at the slightest change of the weather. For really good
concrete repairs, its imperative to use the right crack filler paired
with the right repair method.
Once cracks or potholes are fixed, follow it up by sealing the concrete
surface. An acid-etching agent, a vacuum, and sealant are required
for this step. In a lot of countries, road workers often do without thisparticular step because cement dries up hard. Doing this step,
however, ensures that the filler stays in place and is protected to hold
up for a long time.
For properconcrete repairs, workers should be able to determine the
main causes of the cracks and holes in the concrete. Remember the
giant sinkhole in South America? A lot of the locals actually said that
that concrete had just been repaired so it was a mystery how the
workers werent able to detect the problem underneath the concrete.
Is there a busted pipe somewhere that consistently leaks water,
therefore weakening the composition of the concrete? Are there
space pockets that need to be filled underneath the surface? The
workers have to get to the bottom of these causes and treat them
appropriately before the actual repair. For cracks below the surface,treating them should not be merely limited to using a filler and sealing
it; workers need to dig slightly deeper and clean up the crack or hole
before filling it up with a two-part epoxy crack repair agent with a
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dual-cartridge gun. Afterwards, it has to be sanded to make sure its
smooth before sealing it.
According to experts, the repair method is greatly rooted in the
process of road construction all the steps matter, and missing one
step will instantly reflect poor quality. Since a lot of people nowadays
are inclined to inspect the quality of public utility structures such as
roads, these few basics will surely help them spot bogus repair
efforts in their community that may actually impact their lives.
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What Do Painting Contractors Do And How Can They
Help You?
Most homeowners nowadays believe that hiring professionals tohandle home repairs and renovations is just a complete waste of
money, especially since the internet has all the helpful DIY tips.
Painting your house is not really that difficult, is it? So many home
improvement stores are greatly encouraging; you pop in their store
for a can of paint and you leave with a whole new look for your home.
Sounds like a great project to embark on, but most of the time, with
everybodys busy schedule, it takes forever to finish a paint job andtheres a bit of a difference with the hues of the paint which is
definitely not intended.
To spare yourself the stress of having to devote several consecutive
weekends to get that paint job done (that you must admit youre
already getting tired of), maybe you should consider hiringa painting
contractor to help you out.
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What do painting contractors do really, and how can they help you?
First of all, painting contractors will get your house ready. They
ensure that all your furniture and other important fixtures like air
conditioning units, pendant lighting, et cetera, are properly protected
from the busy activity. You dont want to have that Mr. Bean moment
when after the paint job, you notice that all your furniture have
splatters of paint and your door has a missing door knob.
Do you know they can also provide you a warranty so that all your
requirements for the job are properly carried out? Youre assured that
the job will be accomplished on the agreed date and according to thequality that you specified. Should the final outcome be far from what
you ordered, you can either get a free do-over or a refund.
Painting contractors are also especially helpful when it comes to
choosing the right colours of paint for your house. For example, you
find, for some reason, that you are completely drawn to a putrid
green colour that can instantly remind people of murky pond water:
while its not likely that your contractor will tell you that its a terrible
choice, he will definitely suggest the right accent colours. On the
other hand, if you have chosen a hue that is not available in your local
paint store, your contractor can recommend a great alternative for
you as well as the best place to find it where you can also save on
costs.
To conclude, these professionals can provide you a lot of benefits as
they work to deliver what you want. And while you may have to pay
them, the cost of their service is surely worth it if your house, in the
end, will look exactly like how you envisioned it in your dreams.
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Different Types Of Industrial Protective Coatings And
Their UsesIndustrial structures like plants and skyscrapers are often subject towear and tear thats why maintaining them is incredibly important.
Cleaning them is one way of maintaining their quality, but a more
effective method is to use industrial protective coatings which not
only repel damaging elements but also strengthen the composition of
the material they are used on.
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One of the most commonly used protective coatings is epoxy. This
compound has been developed to full strength over the last couple of
years that big cargo vessels use them, not only to cover cracks
effectively but also to prevent further damage caused by corrosion.Before, epoxy can only be applied on a completely dry surface, but
with the improvement of the technology for its manufacture, a lot of
epoxy brands nowadays have the kind that can be applied and
adheres really well on a wet surface. Most big ships these days make
use of this protective coating which is also known to withstand
relatively strong impact.
Similar to epoxy is polyurethane, a polymer compound that can be
applied on an assortment of surfaces. When dry, polyurethane
hardens and provides a shell-like protection making the material it
has been spread on more durable and impermeable. It also dries fast,
and compared to other protective coatings, its more
environmentally-friendly as it does not release harmful vapours.
Another protective coating used for industrial purposes is
intumescent coating which can retard fire. For big industries where
theres frequent use of combustible materials, intumescent coating is
one of the materials that makes sure that fire will not spread easily.
Intumescent swells upon exposure to extreme heat, therefore
increasing in volume but decreasing in density. While effective in
preventing fires, it reacts negatively to humidity which then reduces
its effectivity as fire-resistant coating. Its important that this material
is used in a place where there is low or no humidity.
Industrial protective coatings are not only designed to prevent
corrosion and other environmentally-caused physical problems. They
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are also used for safety purposes. Hospitals and headquarters for
food industries apply them on their walls and floors. For hospitals, a
polymer-based coating provides necessary friction to prevent skids
and slips. Also, some types of these polymer-based coatings areknown to repel bacteria and fungus growth.
There are creative uses for protective coatings as well, as polymer can
easily be manipulated whether its dry or wet. The important thing to
remember for this purpose is to make sure first that prolonged
contact with them will not result in skin irritation or other physical
discomfort.