Modified polymer bitumen

By mixing two or more polymers, a mixture of polymers can be obtained (polymer bitumen), which in addition to having the properties of the primary polymer, its weaknesses have also been eliminated, and in principle, it is possible to use a polymer that has the desired properties. Mixing it with another polymer improves the properties of this polymer.

Reason for using modified polymer bitumen

On most plain roads, it works well. However, new road needs are increasing year by year.
Increasing the number of industrial vehicles with large tires and increasing the load on the axles has devastating effects on the roads and this trend will continue in the future.

To help highway engineers meet this challenge, a wide range of custom asphalts made from modified polymer bitumen are now used, and a wide range of modified bitumens are used for conventional asphalt, all of which improve asphalt performance when Increase service.

Good design, construction and timely maintenance of roads not only increase resistance to various conditions but also increase safety.
However, parts of the road have more pressure than others.

Therefore, these points must be maintained, and despite the high volume of traffic on the roads, it will be difficult to repair the damaged areas, especially on the bridges, so the modified polymer bitumen in the preparation of asphalt helps the asphalt resistance and the need for repairs. You reduce.

The same method has been used to improve the properties of bitumen, so that by adding a certain percentage of some polymers to bitumen, the properties of this important material can be improved and a kind of modified polymer bitumen can be made.
Polymers that are added to the polymer as an additive to modified bitumens can improve properties such as softening point, adhesion, and brittleness of bitumen at low temperatures.

Some of the polymers that are added to bitumen as modifiers are: SBS, polyvinyl chloride, polypropylene, polyethylene and polystyrene, which are thermoplastic polymers.

Adding polyethylene to make modified polymer bitumen increases the softening point and reduces the permeability of the bitumen.
Polypropylene gives similar properties to bitumen, except that because the melting point of polypropylene is higher than polyethylene
By using smaller amounts of polypropylene, the desired properties can be obtained in modified polymer bitumen.

Polymer bitumen modified by SBS polymer

Another type of modified polymer bitumen is modified by SBS polymer.

These polymers are in the class of thermoplastic elastomers and improve the properties of bitumen in all temperature ranges.

However, despite the advantages of this polymer in terms of bitumen modification, the compatibility of this polymer with bitumen is low and this is a big obstacle in preparing bitumen with improved properties.

The reason for this incompatibility is the density difference of this polymer with the continuous environment of bitumen, which is easily separated from it at high storage temperature and forms new polymer molecules.

Regarding the use of this polymer in bitumen, it should be noted that the properties of bitumen only improve the properties of bitumen if SBS is dispersed in the bitumen in one step. This increase in stability is possible in two ways.

In this method, by adding another substance to the mixture, which increases the possibility of mixing by reducing the density difference.
In this method, which is performed at the microscopic level, by reducing the size of the polymer particles to the nanometer level, the problem of this incompatibility is solved.

In this method, by reducing the weight of the particles against the intermolecular forces of bitumen-polymer, the accumulation of polymer molecules and the formation of a polymer domain is prevented.

Another point that should be considered despite the high quality of results in the use of these polymers, is the relatively high price of these polymers compared to other types.

The results of penetration, softening point and viscosity tests showed that the addition of SBS polymer to bitumen improves the rheological properties of bitumen.

Including reduction of thermal sensitivity of bitumen and increase of softening point and permeability index and reduction of permeability. Also, comparison of results after aging of pure and modified bitumen with SBS shows
SBS modified bitumen has better rheological properties than pure bitumen

But in both cases, increasing the age increases the softness and viscosity and decreases the degree of penetration.

But in general, the aging rate of bitumens modified with SBS polymer is less than pure bitumen.

The use of asphalt containing bitumen modified with SBS polymer is suitable in areas with hot summers and cold winters or large temperature differences between day and night.

In hot weather, reducing the penetration of this bitumen and its non-viscosity along with the high strength of the mixture, makes it possible to withstand the load without creating a groove.

Excellent tensile strength along with the coefficient of roughness of asphalt mix with elastic properties of bitumen, provides good flexibility so that in cold weather, which is due to the shrinkage of surfaces prone to cracking, this mixture can be used.

Finally, the use of this bitumen in asphalt, despite the higher initial costs in its production, due to the increase in pavement life by increasing durability and indirect savings in several times the cost of improvement and repair, there is economic potential.

Polymer to bitumen reduces the degree of penetration and increases the softening point.
Theoretically, the increase in softening point is due to the formation of three-dimensional networks in the bitumen environment after the formation of long polymer chains, which increases the elasticity and fluidity of bitumen at high temperatures.
This leads to better bitumen performance at high temperatures. Also, with the increase of polymer, the bitumen permeability index increases

 What is emulsion bitumen

Emulsin bitumen

Emulsion bitumen is literally a mixture of two immiscible liquids, one of which is dispersed in the other and inseparable from each other.

Emulsion bitumen is a mixture of bitumen and water with an emulsifying substance. Bitumen emulsifying agent is a substance that prevents bitumen particles from sticking to each other in water and causes bitumen to disperse completely in water.

In this way, the emulsifying molecules surround the bitumen molecules and prevent the bitumen particles from accumulating and re-adhering to each other, and these particles are surrounded by water.

Since the provision of bitumen heating facilities and devices in remote areas is neither possible nor cost-effective, asphalt specialists tried to implement a kind of use of cold bitumen in road construction.

With the advent of bitumen emulsion, not only was it practically possible to use bitumen in the cold, but there was no defect in the use of mixed bitumen in this case.

History of making emulsion bitumen

Emulsin bitumen

This type was first patented by Hugh Allen Mackey in 1922. At a time when the automotive industry was booming and many roads were being built, this product caused a great revolution in the road construction industry.

Emulsion bitumen production in France, known as the birthplace of this technology, increased from 10,000 tons in 1923 to 300,000 tons during World War II and to 1.2 million tons in 1970.

Today, 30% of French roads are made of emulsion bitumen and are still under construction around the world. Most of the bitumens used in road construction are cool and are at normal temperature and in a paste state.

Therefore, in paved asphalt operations, they must first be liquefied with the help of heat and then a thin layer of them must be spread on the road surface.

Types of bitumen emulsifiers

Emulsin bitumen

Emulsifying agents include colloidal mineral emulsifiers such as bentonite soil “emulsion fire” and chemical emulsifiers such as soap.

Mineral emulsifiers such as “Emulsion Fire” bentonite are more resistant to chemical conditions than chemical emulsifiers.

In addition, the bentonite mineral emulsifier is more resistant to ultraviolet radiation than the chemical emulsifier.

Emulsion bitumen production method

To prepare emulsion bitumen, devices are known as fast rotating devices.

Water, molten bitumen and emulsifying agent in these devices are placed between the plates that rotate at high speed and the bitumen is dispersed due to dispersion in water due to the centrifugal force produced by the rotating plates.

The speed of the rotating plates is usually 3000 rpm, but this type can also be produced by low speed mixers, but in these cases a strong emulsifier must be used as well as bitumen that has a low melting point. Usually the amount of bitumen in the emulsion bitumen is about 50% and the amount of emulsifier used in this type varies from one hundred percent to five percent.

Reasons to use emulsion
Bitumen has applications such as adhesion between layers, sealing, protection against weather conditions and corrosion, and maintenance and repair of concrete, asphalt and metal surfaces.

For this purpose, the quality characteristics of bitumen should be improved and liquefied for use, which increased the benefits of bitumen by producing this type of bitumen. The advantages of bitumen emulsion are:

More reasonable price compared to soluble bitumen due to the use of water instead of oil, no need to heat during unloading, loading and distribution

Adhesion properties of rock material and its

Increased application speed due to the evaporation rate of water in bitumen compared to petroleum solvent

Climatic conditions during work (choice of bitumen type, equipment, working method and mixing plan depends on weather conditions during work)
Available tools and equipment

Reduce environmental pollution due to evaporation of oil in soluble bitumen or when heating it

Possibility to increase the quality of bitumen such as adhesion and viscosity according to the production process, which allows improving the properties of bitumen.

Ability to produce different types of emulsions with different percentages of bitumen for storage purposes such as cold ready mix and cold sealant

Type of stone material used

applications
At present, the desired gluing is used in all hot and cold asphalt works, soil stabilization, types of protective asphalt and surface coating. Other applications are as follows:

Bitumen spraying
Mixed asphalt in place
Sealing with stone material
Filling the cracks
One-layer surface asphalt
Hot asphalt mixtures
Mulching
Protective and sealing asphalts
Cold asphalt mixtures
Dust Address
Multilayer surface asphalt
Penetration coating for permeable surfaces
Surface coverage
Sealing with sand
Repairs and staining
Stone-free surface coating

Reasons for choosing and using emulsion bitumen
The scope of application of this bitumen is more than ordinary bitumen because in all places of application of soluble bitumen, this type can also be used. There are also other cases where only emulsion bitumen can be used, so cases There are certain cases where it is not possible to use soluble bitumen.

Of course, this does not mean that they can be used without checking and randomly, but their useful, effective and acceptable use requires the selection of emulsion bitumen appropriate to the working conditions.

In selecting, first of all, the type of execution operation used for this emulsion bitumen should be considered and after determining the type of execution operation, other project variables should also be considered.

Gilsu Knight Export

Export Gilsonite is mainly exported through the trading company to many consuming countries in the world. Very high quality in production and packaging and reasonable price are considered for Gilsu Knight for export.

Bitumen or Gilsonite in the Iranian daily market as one of the best products in the natural products industry has been able to bring the best results and returns for buyers and consumers.

Gilsonite Iran is one of the best examples of Gilsonite that has been studied in many laboratories in Europe and the United States and has easily been able to attract the attention of many buyers. Gilsonite has been able to sell very well in the Iranian market.

Uses of this product in global markets include the following

Waterproof production
Production of special isogams
Production of powder paint
Liquid paint production
Production of special tires

These items have enabled Gilsonite manufacturers in Iran to easily bring the best possible results for buyers and customers and the possibility of providing these items.

Export Gilsonite quality

Gilsonite is exported to all cities of Iran with cheap quality and reasonable prices.
Exporting Iranian goods to other countries due to reasonable prices and very high quality has been able to bring good returns to producers. One of these important sectors in our country’s exports is the cheap export of high quality Gilsonite, which has been able to provide the best services for countries consuming high quality Gilsonite. In this regard, the largest companies buying and selling quality Gilsonite in Iran have the best returns.

Gilsonite mines for export in Iran

Gilsonite mines in Iran are known as the largest and main center for the production and sale of bitumen. In these centers, you can easily prepare and use very good samples of the best models of bitumen or Gilsu Knight. In this regard, the most reputable and largest companies producing natural bitumen and Gilsonite in Iran have been able to provide special samples of this product for the domestic market and export market.

Export of Iranian Gilsonite is one of the very strong fields that can be done through the following products

Gilsonite powder
Mass Gilsonite
Gilsonite packaging
Gilsonite Bulk
Export Gilsonite

This sample of Gilsonite produced in Iran has the highest sales volume and has attracted many customers throughout Iran. Export of Iran Gilsonite to other countries is one of the services provided by the most reputable companies for the production and sale of this product.

Gilsonite Exports

Gilsonite is exported to many cities and countries of the world at the most reasonable prices. This product can easily have a great impact on the largest markets in Iran today and provide the possibility of providing this product for foreign buyers of Gilsonite and domestic customers. The manufacturer of pure Gilsonite in Iran offers a large volume of this product to buyers.

Cooperation with this manufacturer can include the following:

Standard analysis
High sales volume
cheap price
suitable packaging
Ability to download and supply worldwide
Use of the largest Gilsonite mines in the country
Access to the best product

All this will have a great impact on the selection and purchase and sale, as well as the export of the best samples of Gilsonite in the market and will bring good results for buyers. On the other hand, along with the largest pure Gilsonite production center in Iran, the best available models of this product can be easily purchased.

Production of export gilsonite

In Iran, the export manufacturer of Gilsonite, as the main center for the production and sale of Gilsonite in Iran, has provided the best examples of this product to buyers. In this regard, the most reputable companies that buy this product in Iran can easily have very special access to this export product. On the other hand, the most reputable international buyers in the Iranian market can have special choices to buy the best available samples of this product throughout the country. On the other ,

In relation to manufacturers, the following are available

Ability to buy bulk goods
Ability to access production samples
International Standard Analysis
Fast loading and delivery of the product
Possibility of export packaging
Supply at a very cheap price

These can be seen in the sale of Gilsonite in Tehran and other cities in Iran. In this regard, in the Iranian market, this feature can be seen in the net sales of Gilsonite.

Gilsonite sales in export

In Tehran, as one of the largest commodity exchanges in Iran, you can easily see the first-class types of Gilsonite that are offered to customers through the largest production and sales systems.

In this regard, the sale of export Gilsonite in Tehran can be considered as one of the general methods of buying and selling this product and the best available examples of this product with very cheap prices and also very high quality. Therefore, it is easy to buy and sell a wide range of these products and very special samples of this product are simply prepared.

Export of micronized Gilsonite mineral bitumen powder

Iran has the richest mineral bitumen or Gilsonite mines in the world, but why is investment and profitability so low and why do joint producers not have the power to raise their initial capital?

Is it because people around the world are still unaware of the power and miracle of Gilsonite in the industry?

Or the relevant officials pave the way for the sake of Iranian investors and businessmen