Bitumen product in iran 12

Emulsion bitumen

The classification for bitumen emulsions is based on the following criteria:

 

1- Ionic structure (electrical charge sign of a particle)

 

2- Stability in contact with fast-breaking (unstable), medium-breaking (semi-stable), late-breaking (stable and very stable) stone materials

 

 

Why emulsion?

 

Bitumen is solid or semi-solid at ambient temperature, which does not have the necessary performance, but can be used in the following three ways, which are:

 

Heating bitumen

 

Mixing bitumen with petroleum solvents (soluble bitumen)

 

Mixing bitumen with water as a bitumen emulsion

 

The first method is usually used for high volume jobs. The second method is expensive today because it causes the loss of petroleum solvents, environmental pollution and the release of hydrocarbons, especially in urban areas, and carries the risk of fire. In addition, the work in this case should be done in a favorable season with dry and non-wet stone materials.

 

Bitumen emulsions should have special properties depending on the use, for example, the characteristics of bitumen emulsion used to create an adhesive layer between two layers of asphalt are different from the bitumen emulsion used to prepare cold asphalt mixture.

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Bitumen product in iran 7

Asphalt

Today, several important factors regarding the quality of asphalt are examined.

 

 Power and ability to carry long distances.

 

 Ability to use asphalt with low thickness.

 

Speed ​​of asphalt distribution, especially in big cities and residential complexes, which face many obstacles in the implementation of projects.

 

The price is reasonable and cheap.

 

No conflict with environmental and human health indicators.

 

The speed of setting up the parent factory and the possibility of supporting workshops or workshops.

 

The complexity of the machines required and ease of use.

 

Suitable for any type of asphalt and pavement (street - highway - airport runway)

 

Today, the process of changing the hot road construction system using emulsion methods is at the top of the activities of many countries and is going to completely replace its place with hot asphalt in this decade.

The history of using bitumen emulsions for road construction and maintenance dates back to 1920 and since 1953 bitumen emulsions have been widely used in the construction of freeways, highways, main, secondary and rural roads by cold asphalt method, types of protective asphalts, surface coating, stain consumption Capturing, maintaining and improving roads and… it is used. Bituminous emulsions have many advantages such as:

• More safety

•Save money

• Variety of applications

•energy saving

• Reducing environmental pollution

• Ability to use them on wet surfaces

 

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Iranbitumen product in iran

Cold bitumen is a new material of bitumen and is used for insulation of air conditioner floors and bathrooms, asphalt or isogum sealing, pool or wall sealing, basement and wet walls for insulation and is one of the characteristics of soluble cold bitumen. It is in water and does not need heat. Emulsion bitumen or bitumen is obtained by mixing bitumen, water and emulsion materials in the refinery. As can be seen from the chemical properties of bitumen and water, these two substances do not mix under normal conditions and are separated due to different densities. Emulsifiers form a solution of the two dispersed together.

 

 

Advantages of cold bitumen product:

 

Water based and environmentally friendly

 

No need for heating

 

unflamable

 

High speed in execution

 

Seamless and seamless

 

UV and resistant

 

Cold bitumen uses:

 

Infrastructure and sealing of pools and tanks

 

On the floor before tile or ceramic

 

Building foundation and building pit

 

On different surfaces such as Iranite, brick, plaster, cement and…

 

Create a protective layer against steam and…

 

Waterproofing is a material used to prevent water and moisture from penetrating buildings. Bitumen is one of the waterproofing materials that is widely used in industry and construction. Bitumen must be liquefied when used in various applications. There are 3 methods to convert bitumen from high viscosity to a low viscosity fluid. : Heating bitumen, dissolving it in a solvent, emulsifying it.

 

 

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Bitumen product in iran

Making bitumen emulsions

Today, two methods for preparing bitumen emulsions are common in road construction, which are:

1- Continuous method

2- Modular method

The main difference between these two methods is that in the preparation of bitumen emulsion by continuous method, bitumen phase and aqueous phase are instantly prepared and injected into the production system. If in the modular method, the aqueous phase is prepared separately in two modules or the bitumen phase is mixed instantly in a colloidal mill. In the bitumen emulsion production process, the emulsion solution and bitumen are passed through the mill to make the emulsion. The pumps introduce the emulsion solution of bitumen into the mill. Emulsion solution consists of water, emulsion, acid and, if necessary, stabilizer, which are mixed carefully and in appropriate proportions to obtain a uniform solution with the desired degree of acidity. The bitumen used can be pure bitumen or bitumen mixed with an oil solvent such as kerosene or diesel or vegetable oils. The emulsion is removed from the hot mill. Therefore, before transferring to the storage tank, it must be entered into heat exchangers to reach the appropriate temperature and then enter the storage tank.

 

The emulsion temperature during manufacture should never exceed 100 ° C and should be kept between 85 and 95 ° C. In order to avoid local temperature rise, the temperature difference between the bitumen and the emulsion solution should be as small as possible. The bitumen must be hot enough to be pumped. For emulsions with 60% bitumen, the set temperature of the two phases should be considered around 195 ° C and the temperature of the emulsion at the outlet of the mill should be around 90 ° C. Before producing bitumen emulsion, a suitable formula should be selected to make it according to the application and related properties and relevant standards.

 

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Bitumen_product_in_iran

Cold bitumen

 

Bit Bitoplast FRE bitumen insulation Asphalt protective coating:

 

 Bitoplast FRE solvent protective coating is a two-component polymer product that Bitoplast coating has excellent resistance against fuels and petroleum products and has a high adhesion to concrete and asphalt surfaces.

 

 

Bitoplast coating increases the life of asphalt and reduces its maintenance costs, and as a result is the most important factor of economic savings. Bitoplast emulsion strengthens and protects the asphalt, concrete cover and is not toxic or flammable.

 

Uses of Bitoplast bitumen insulation:

 

Covering surfaces exposed to petroleum products.

 

Concrete and asphalt surfaces of airports.

 

Oil, gas, petrochemical industries, parking lots, repair shops, gas stations.

 

Industrial plants, etc., which are exposed to oil, gasoline and diesel pollution.

 

Insulation of oil tanks.

 

Flight levels, airports, especially in the area of ​​stopping and repairing flight equipment.

 

 

 

Advantages of Bitoplast Coating:

 

Excellent resistance to fuels and petroleum products.

 

Resistant to weather and sea water.

 

Excellent adhesion on all surfaces.

 

Quick and easy implementation.

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Bitumen product in iran

Bitumen product in iran⁦🇮🇷⁩

Mixed bitumen or liquid

Sometimes it is not possible to use solid bitumen directly in road construction operations because due to lack of access to heating equipment or cooling of heated bitumen during work or the need for safety from workers and fires and spending time requires that liquid bitumen be used. River.

 

Soluble bitumen is obtained by dissolving pure bitumen in petroleum solvents or oils.

 The type and quality of soluble bitumens depends on the quality of the original pure bitumen, the type of solvent and the amount of solvent.

The higher the amount of petroleum solvents in the bitumen solution, the greater its fluidity.

 Usually, the percentage of solvent used in Iranian soluble bitumens varies from 10 to 50%. Lack of access to bitumen heating devices at high temperatures, cooling of bitumen during operation, impossibility of its penetration into porous minerals, necessity of workers' safety, fire and time consuming cause in some cases soluble bitumen to be used.

 In order for bitumen to adhere to wet materials, the soluble bitumen used must have a suitable degree of acidity. Soluble bitumens are used in road construction for surface coatings, columns, surface asphalt, cold factory asphalt or mixtures at the place of use.

Liquid bitumen is actually a mixture of solid or soft bitumen with a suitable solvent.

These bitumens are divided into the following three categories:

- RC bitumens

Delayed bitumen or SC

Slow bit or MC

The above bitumens can be divided into more categories according to viscosity.

 

Bitumen Trinidad

In Trinidad, bitumen is removed from the crater of a volcano. The closed surface of the bitumen is broken, and the bitumen is removed from under it, which again lubricates the bitumen and fills the place of what was removed.

 This bitumen contains impurities (minerals and plant roots). It is melted at 160 ° C and refined, called Trinidad-epure bitumen, and contains 38.5% inorganic bodies, 5.5% in insoluble organic matter.....

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Bitumen product in iran

Bitumen product in Iran

Bitumen production process

It is done in the following two ways

 

 

Batch Process

In the discontinuous process, the aeration tower is filled with a certain volume of feed and after blowing air and reaching the desired specifications, the tower is emptied and the product enters the desired tanks.

The main components of a discontinuous aeration unit are:

Pre Heater

Blower or Compressor

Oxidizer Tower

A system for collecting and burning vapors

 

 

Continues Process

In the continuous process, the feed with a definite and controllable flow and a predetermined temperature continuously enters the aeration tower and after performing aeration operations under constant operating conditions, it continuously leaves the aeration tower.

This method of bitumen production, which is used in refineries, is considered because of the following advantages:

Reduction of pollutant vapors

Reduce equipment and maintenance costs

Increase efficiency and amount of production per unit time

Reduce the heat load of feed preheaters

Ease of control and process operations due to the continuous nature of the process

Reduced air consumption and shortened aeration time due to optimal use of blown air.

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Bitumen product in iran

Types of bitumen modifiers and additives

 In order to modify some properties of bitumen additives or bitumen modifiers

Is used.

These compounds

They include a wide range of minerals, organic, natural and industrial.

Modified bitumens by type

Additives or bitumen modifiers are divided into the following three main groups:

1- Modified polymer bitumens

2- Bitumen modified with rubber

3- Bitumens modified with chemicals

 

Modified polymer bitumens

Construction of asphalt concrete pavements has been developed using pure bitumen modified with suitable polymers.

 Since the tests do not show the performance characteristics of polymer-modified bitumens, therefore, the appropriate polymer is selected based on the physical properties of the polymers and the desired performance characteristics.

 Polymers are divided into two categories based on their physical properties: plastomers and elastomers.

When the polymer is stretched, if the load is pulled in the same position, the residue remains

It remains a plastomer and if it returns to its original shape, it is an elastomer.

 

 Rubber modified bitumen

These bitumens are made by mixing recycled rubber powder

And if necessary, mineral additives or other fiber materials are prepared with pure bitumen.

Consumable powder should be mixed with hot bitumen so that the particles

The tires are sufficiently swollen and expanded before using bitumen.

Bitumens that are modified in this way

They are divided into three groups in terms of viscosity, which are high to low concentrations, respectively.

 

Chemical modified bitumen

Chemical-modified bitumens are made by adding stabilizing chemicals to pure bitumens

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Bitumen product in iran

Characteristics of oil bitumens depending on the type and material of crude oil, quantity and quality of hydrocarbons

Ingredients and distillation method.

Bitumens used in the road construction industry

It is divided as follows:

 

Pure bitumen

 

Soluble bitumen

 

Emulsion bitumens

 

(Pure bitumen)

Bitumens obtained directly from the distillation tower in the refinery vacuum are called pure bitumens.

 Pure bitumens deform into liquid due to pressure and heat, and at low temperatures, they have elastic and springy states.

 Pure bitumen for road construction is classified according to the degree of penetration, viscosity, performance.

 

(Soluble bitumens)

Soluble bitumen is obtained by dissolving pure bitumen in solvents or petroleum oils.

The higher the amount of petroleum solvents in the bitumen solution, the greater its fluidity.

Usually the percentage of solvent used in bitumen

The solution varies from five percent to 60 percent.

 Soluble bitumen is used in the construction and modification of pavements.

 

(Emulsion bitumens)

Emulsion bitumen is obtained by mixing bitumen and water with an emulsifier.

In this mixture, bitumen with dimensions of one to 10 microns floats in water.

Emulsifiers create

The baroelectric of the same name becomes bitumen on the surface of the particles. The repulsive force caused by this load also hinders

The bitumen particles join in the emulsion. The amount of bitumen in emulsion bitumens is 50% to 75%.

From emulsion bitumens for preparing all kinds of factory cold asphalt mixtures or on-site mixtures, bitumen protective asphalt, sealing and staining procedures

Asphalt, soil stabilization, sand and dusting can be used.

For the use of emulsion bitumens usually

There is no need to heat them. Therefore, they are economically and safely superior to other types of bitumen.

 

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Bitumen product in iran

 

Bitumen products include:

1_Breathed bitumen: From blowing hot air into pure bitumen in the last stage of purification is obtained.

They are used to make roofing sheets, car batteries, waterproof paints and lining.

 

 

2_Special bitumen: This type of bitumen is produced according to the request of customers with special specifications for regional and case applications and is mainly in the form of modified bitumen and oxidized bitumen.

 

 

3_Emulsion bitumen: It is a mixture of two liquids (water and bitumen) that are insoluble in which bitumen is suspended in very small particles in water.

The diameter of the bitumen grains is between 0.001 and 0.002 mm. The smaller the diameter of the bitumen particles, the better the emulsion.

Cationic emulsion bitumens based on their stability against breaking into three main groups:

 

- Rapid Setting

 

- Medium Setting

 

- Slow Setting

 

At present, emulsion bitumens are used in all hot and cold asphalt works and all kinds of protective asphalts, penetrating and surface coatings and soil stabilization, as the case may be.

 

4_ Soluble bitumen: are obtained by dissolving pure bitumen in solvents or petroleum oils.

For single coat and prime coat uses, it is used in road construction and according to the type of solvent used, it is divided into three categories: fast breaker (bitumen and gasoline), slow breaker (bitumen and kerosene) and late breaker (bitumen and diesel).

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