Industrial Protective Coatings And Their Proper Usage

7/31/2019 Industrial Protective Coatings And Their Proper Usage

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www.diamondpcs.com.au copyright 2012

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.

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Industrial Protective Coatings And Their Proper Usage

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