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What is a Polymer Modified Bitumen (PMB)?

What is a Polymer Modified Bitumen (PMB)?

Stay with Petroleum Products , we will examine the polymer modified asphalts, features as well as their benefits.

Asphalt is one of the most important materials in road construction and transportation industry.

They produce it from materials such as gravel, bitumen and various additives.

In this modern era, we have made progress in various fields of science, technology and asphalt industry.

People use polymer asphalt very much.

Polymer is a chain. It has unique features and capabilities.

What Is a Polymer Modified Asphalt?

Polymer asphalt is a type of asphalt. People use polymeric materials in making asphalt.

If people use pitch in the construction of asphalt, they will have high quality asphalt.

Benefits of Polymer Modified Bitumen

Polymer asphalts have many advantages as follows:

 More resistance to permanent deformation (scratching and pressing)

One of the most important features of polymer asphalt is its high resistance to pressure.

Machines put pressure on asphalt pavement and change it.

We have to say that one of the most important criteria for checking the quality of asphalt is the rate of deformation resistance.

People use asphalt in the construction of roads.

Tensile Strength and Elastic Coefficient

They use important criteria to assess the durability of asphalt.

The  criterias  include such as tensile strength and elastic coefficient.

If the asphalt elastic coefficient increases, it will be more resistant to external pressure, so the lifespan of asphalt pavement will increase.

Better Resistance to Temperature Fluctuations

If the temperature of each material changes, it will go away.

These changes can also cause cracks in them.

As a result, it increases the reconstructing and asphalt coating.

 However polymer asphalts are very resistant to temperature changes.

 Excellent Resistance to Crack Propagation (reflective cracking)

These asphalts are highly resistant to cracking.

We can’t say that this asphalt doesn’t crack, however  this will rarely happen.

Of course fewer asphalts are resistant to cracking.

 Strong Adhesion

If the adhesion of an asphalt is higher, its quality and durability will be higher.

Asphalt polymer is an asphalt that has these features, so we can use it for road construction.

The Most Important Properties of Polymer Modified Asphalt

People use polymers in the manufacture of asphalt.

As a result, their asphalt has unique properties.

The most important properties of polymer asphalt include high Adhesion, it’s application at high and low temperatures, elasticity,  flexible at cold temperatures, high resistance to deformation and movement, less sensitivity to temperature changes and tensile strength as well as high hardness at high temperatures.

Price of Polymer Modified Asphalt

Polymer modified asphalt has unique properties and characteristics, so they have a higher price than conventional asphalt.

Different factors can be effective in determining their price, however the most important factors in determining the price of polymer asphalts include the types of polymers in asphalt, covered area, the value of polymer asphalt, characteristics of asphalt, shipping costs as well as the costs of asphalt pavement implementation.

Polymer Modified Asphalt in Iran

People use polymers to modify tar and asphalt.

Most countries try to reduce their road construction costs through asphalts and increase the life of them too.

Iran is one of the largest producers of natural pitch in the world.

It has a high potential for producing high-quality asphalt.

Application of polymer asphalt includes covering roads and highways.

It has features such as long lifespan as well as less need to repair.

Composition of Polymer Asphalts

They use different organic compounds to produce polymer asphalts.

Polymer asphalt compounds include  thermoplastics, thermosets, thermoplastic elastomers,  polyurethanes, polyester-polyether copolymers, cyclic olefin copolymers as well as  styrenic block copolymers.

Final Summation

Polymer asphalt has many applications due to its longevity, excellent resistance to pressure and impact, high resistance to temperature changes, excellent elasticity.

People use different polymers to produce asphalt.

Polymers include thermostats, thermoplastic elastomers, polyurethanes, polyester- polyether copolymers and styrenic block copolymers.

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