This type is produced according to customers’ request, Pavements designed and constructed for heavy duty traffic and extreme weather conditions require specially designed engineered Bitumen Grades. changing the characteristics of original bitumen with change of process condition or/and the addition of some modifier such as Polymer, Rubber and …
Air Blowing Bitumen Bitumen & Tar
0تومانProduction of Bitumen Product in Iran and World by Blowing Method and Straight Run Method. The Air Blowing Bitumen is Produced by Process of Vacuum Bottom (VB) and Air in the Reactor and Due to the Control of the Process Conditions, Different Grades are Produced.
Air Blowing Bitumen- Tar
0تومانBitumen production in according to three standard method (Blowing method ,Straight run method and Blending method) in Iran and other countries
The Air Blowing Bitumen is produced by process of vacuum Bottom (VB) and air in the reactor. and due to the control of the process conditions, different grades are produced.
Bitumen clasification according to various specification such as Penetration, Viscosity, Performane of bitumen in the road and ….
Bitumen – Tar
0تومانThe degree of penetration of bitumen provided by the company is pure petroleum bitumen, which is produced by passing hot air through the raw material of vacuum baton. Bitumen is produced from crude oil residues after breaking down and eliminating its hydrocarbons.
BITUMEN 40-50 Penetration Grade
0تومانPenetration Grade Bitumen is a standard bitumen usually used as a Paving Grade Bitumen essential for road construction and for the production of asphalt pavements with superior properties, and it’s very important once it bounds the aggregates and creates a unique cohesion and stability to the bituminous mix.
BITUMEN 40/50 Penetration Grade
0تومانBitumen 40/50 is a penetration grade bitumen means the penetration value is in the range 40 to 50 at standard test conditions which commonly used as a Paving Grade. This bitumen is petroleum grade bitumen, produced from fractional distillation of crude oil and vacuum residue (short residue) feedstock. Bitumen 40/50 is applicable for the production of hot mix asphalt for bases and pavements and for road.it is used in tropical areas.
BITUMEN 60-70 Penetration Grade
0تومانPenetration Grade Bitumen is a standard bitumen usually used as a Paving Grade Bitumen essential for road construction and for the production of asphalt pavements with superior properties, and it’s very important once it bounds the aggregates and creates a unique cohesion and stability to the bituminous mix.
BITUMEN 60/70 Penetration Grade
0تومانBitumen Penetration Grade 60/70 which is produced during the process of oxidation of vacuum bottom in distillation tower and its penetration grade is between 60 & 70. The most common usage of bitumen 60/70 is in road construction, water proofing & building construction industries and also in cutback bitumen production. This kind of bitumen is suitable to be used in mild regions.
BITUMEN 80-100 Penetration Grade
0تومانPenetration Grade Bitumen is a standard bitumen usually used as a Paving Grade Bitumen essential for road construction and for the production of asphalt pavements with superior properties, and it’s very important once it bounds the aggregates and creates a unique cohesion and stability to the bituminous mix.
BITUMEN 85-100 Penetration Grade
0تومانPenetration Grade Bitumen is a standard bitumen usually used as a Paving Grade Bitumen essential for road construction and for the production of asphalt pavements with superior properties, and it’s very important once it bounds the aggregates and creates a unique cohesion and stability to the bituminous mix.
BITUMEN 85/100 Penetration Grade
0تومانBitumen Penetration Grade 85/100 which is produced during the process of oxidation of vacuum bottom in distillation tower and its penetration grade is between 85 & 100. This bitumen manufactured from fractional/vacuum distillation of crude oil. This grade of Bitumen is mainly used in road construction, water proofing, building construction industries and also in cutback bitumen production. This kind of bitumen is suitable to use in cold regions.
Bitumen CSS1
0تومانCSS-1 emulsion bitumen is a cationic emulsion. CSS-1 bitumen emulsion is usually made by passing a mixture of hot bitumen and water phase between a rotating disk, cone or wheel and a stator. Asphalt CSS1 emulsion is a cation retardant bitumen emulsion containing 57% black bitumen and is made exactly according to ASTM D 2397M-13 standard.
Bitumen Emulsion-Bitumen & Tar
0تومانBitumen emulsions are basically an O/W – Oil on Water solution – A dispersion of bitumen particles on water phase, stabilized with the addition of surfactants – Surface active agents – or most commonly known as emulsifiers. They are primarily used for tack coats for use in between hot mix asphalt layers and prime coats for thin hot mix surfacing layers or a chip seal pavements, other cold mixed asphalt and maintenance binder .
Bitumen emulsions are divided into three categories:
* Anionic with negatively charged globules
* Cationic with positively charged globules
* Non-ionic with neutral globules.
Base on the time of setting after spraying, Bitumen emulsions classification as Quick Set (QS), Rapild set (RS), Medium set (MS) and Slow set(SS)
Bitumen Emulsion|Bitumen & Tar
0تومانBitumen Emulsions are Basically an O/W – Oil on Water Solution – A Dispersion of Bitumen Particles on Water, Stabilized with the Addition of Surfactants – Surface Active Agents – or Most Commonly known as Emulsifiers, that Will Permit the Bitumen to De Diluted in Water. They are Primarily Used for Tack Coats for use in Between Hot Mix Asphalt Lyers and Prime Coats for Thin Hot Mix Surfacing Layers or a Chip Seal Pavements.
Bitumen MC
0تومانLiquid bitumen refers to bitumen that is the result of mixing bitumen with a lubricant (hydrocarbon or water). Ordinary and pure bitumens, such as 60-70 bitumens, are solid in ambient conditions and temperatures, and in order to use them, they must be heated to become liquid, but in many cases, it is not possible to use heat, or it is not economical, or heat. Causes decomposition of bitumen (burning bitumen) and it is not possible to use it cold. In these cases, liquid bitumen is used.
Bitumen VG
0تومانAccording to zinc testers (or viscosity), it means: the penetration of a standard needle with a certain shape in millimeters under the effect of a load of 100 grams in 5 seconds in bitumen Which takes place at a temperature of 25 ° C. The obtained number indicates the permeability of bitumen
Cutback Bitumen|Bitumen & Tar
0تومانCutback Bitumen is by Adding Controlled Amounts of Petroleum Distillates Such as Kerosene. This is Done to Reduce the Viscosity of the Bitumen Temporarily so it Can Penetrate Pavements More Effectively or to Allow Spraying at Temperatures that are too Cold for Successful Sprayed Sealing with Neat Bitumen. The Materials Used to Cutback Bitumen Will Evaporate After Application to Leave the Remaining Material Similar in Hardness to the Original Bitumen Cutback Bitumen Applications is Asphalt Pavement Construction, Maintenancem, Prime and Tack Coating and …
CUTBACK MC250-Cutback bitumen
0تومانBitumen is ‘cutback’ by adding controlled amounts of petroleum distillates such as kerosene. This is done to reduce the viscosity of the bitumen temporarily so it can penetrate pavements more effectively or to allow spraying at temperatures that are too cold for successful sprayed sealing with neat bitumen.
CUTBACK MC250-Cutback bitumen
0تومانBitumen is “cutback” by adding controlled amounts of petroleum distillates, such as kerosene. Type and quality of Cutback depends on type and amount of solvent in the pure bitumen. The more solvent in Cutback bitumen, leads to the more viscosity in bitumen. Cutback bitumen is used when there is limited access to heating equipment, bitumen decomposition in high temperature, bitumen cooling throughout working, workers safety, fire and time consuming. This type of bitumen is used in road operations for surfacing and pavement. Medium-Curing (MC) bitumen is achieved from solving pure bitumen into kerosene.
Cutback bitumen is classified based on viscosity grade. It is divided into three categories:
Rapid-Curing (RC)
The cutback bitumen is known as rapid-curing (RC) if the bitumen is solved in gasoline. The reason is that evaporation occurs quickly and the bitumen is deposited. RC cutbacks are divided into RC250, RC70, RC800 and RC3000 categories. The numbers indicate the viscosity of bitumen. Naphtha could be mixed with bitumen 80/100 for more dilution.
Medium-Curing (MC)
MC cutbacks are prepared by solving bitumen in kerosene which evaporates more slowly than gasoline. MC cutbacks are divided into five groups with their viscosity varying from 3-4 to 6,000 at 60 degrees Centigrade. This kind of bitumen may be achieved by solving bitumen 85/100 in Kerosene.
Slow-Curing (SC)
Slow-curing cutback may be achieved from solving bitumen in gasoil or fuel oil or directly from distillation of crude oil. SC cutbacks do not evaporate under normal weather conditions, but they gradually experience changes in their molecular form. This kind of bitumen is achieved from solving bitumen 85/100 in heavy solvent such as Gasoil or Fuel oil which will not only evaporate but also make it hard. Types of this kind of bitumen includes SC 70, SC 250, SC800 and SC 3000.
CUTBACK MC30-Cutback bitumen
0تومانBitumen is ‘cutback’ by adding controlled amounts of petroleum distillates such as kerosene. This is done to reduce the viscosity of the bitumen temporarily so it can penetrate pavements more effectively or to allow spraying at temperatures that are too cold for successful sprayed sealing with neat bitumen.
CUTBACK MC3000-Cutback bitumen
0تومانBitumen is ‘cutback’ by adding controlled amounts of petroleum distillates such as kerosene. This is done to reduce the viscosity of the bitumen temporarily so it can penetrate pavements more effectively or to allow spraying at temperatures that are too cold for successful sprayed sealing with neat bitumen.
CUTBACK MC70-Cutback bitumen
0تومانBitumen is ‘cutback’ by adding controlled amounts of petroleum distillates such as kerosene. This is done to reduce the viscosity of the bitumen temporarily so it can penetrate pavements more effectively or to allow spraying at temperatures that are too cold for successful sprayed sealing with neat bitumen.
Cutback- Cutback bitumen
0تومانCutback Bitumen is by adding controlled amounts of petroleum solvent such as Kerosene, Gasole and Gasoline.
Base on reduce of bitumen viscosity for spraying in ambient temperature for several application such as Asphalt Pavement Construction, Maintenance,Prime and Tack Coating and …
Base on the time of curing after spraying, Cutback bitumen classification as Rapild Curing(RC), Medium Curing (MC) and Slow Curing (SC)
Emulsions-Bitumen & Tar
0تومانWhatever the end use, application conditions usually require bitumen to behave as a mobile liquid. In principle, there are three ways to make highly-viscous bitumen into a low-viscosity liquid:
- Heat it
- Dissolve it in solvents
- Emulsify it
Bitumen emulsions are two-phased systems consisting of bitumen, water, and one or more additives to assist in formation and stabilization and to modify the properties of the emulsion. The bitumen is dispersed throughout the water phase in the form of discrete globules, typically 0.1 to 50 microns in diameter, which are held in suspension by electrostatic charges stabilized by an emulsifier. Bitumen emulsions can be divided into four classes. The first two are, by far, the most widely used:
- Cationic emulsions
- Anionic emulsions
- Non-ionic emulsions
- Clay-stabilized emulsions
The terms anionic and cationic stem from the electrical charges on the bitumen globules. This identification system originates from one of the fundamental laws of electricity – like charges repel, unlike charges attract. If an electrical potential is applied between two electrodes immersed in an emulsion containing negatively charged particles of bitumen, they will migrate to the anode. In that case, the emulsion is described as “anionic”. Conversely, in a system containing positively charged particles bitumen, they will move to the cathode and the emulsion is described as “cationic”. The bitumen particles in a non-ionic emulsion are neutral and, therefore, will not migrate to either pole. These types of emulsion are rarely
Bitumen emulsions are divided into three categories in terms of setting:
- Rapid-setting (RS)
- Medium-setting (MS)
- Slow-setting (SS)
Cationic RS emulsion is currently the widely used category in Iran. Emulsion setting is irreversible phenomenon which may occur due to the evaporation of the water phase or the attraction of water by stone materials. Throughout this phenomenon, the water phase disappears and bitumen particles will have less space. Then, the bitumen gradually moves towards the surface or coats the aggregate.
Cationic Emulsions
These emulsions are known as cationic because their bitumen aggregates carry positive charges by using Ammonium salts or Amines compounds. They are divided into the following categories:
ISOGUM-DA -Bitumen & Tar
Iso Gam, Waterproofing of buildings, which was traditionally done with asphalt and bitumen until the last forty years, with the advent of waterproofing and the advantages of this type of insulation, these insulations gradually gave way to these. Today, in most buildings, whether in the foundation stage or in the insulation of walls, services, and roofs, insulation is done with a layer of iso gum waterproofing.
ISOGUM-NI – Bitumen & Tar
0تومانIso Gam, Waterproofing of buildings, which was traditionally done with asphalt and bitumen until the last forty years, with the advent of waterproofing and the advantages of this type of insulation, these insulations gradually gave way to these. Today, in most buildings, whether in the foundation stage or in the insulation of walls, services, and roofs, insulation is done with a layer of iso gum waterproofing.
ISOGUM-SE -Bitumen & Tar
0تومانIso Gam, Waterproofing of buildings, which was traditionally done with asphalt and bitumen until the last forty years, with the advent of waterproofing and the advantages of this type of insulation, these insulations gradually gave way to these. Today, in most buildings, whether in the foundation stage or in the insulation of walls, services, and roofs, insulation is done with a layer of iso gum waterproofing.
Modified Bitumen|Bitumen & Tar
0تومانThis Type is Produced According to Customers’ Request, Pavements Designed and Constructed for Heavy Duty Traffic and Extreme Weather Conditions Require Specially Designed Engineered Bitumen Grades. By Changing the Characteristics of Normal Bitumen with Change of Process Condition or and the Addition of a Modifier such as Polymer.
Penetration Grades
0تومانIn the past, the penetration index was defined based on the assumption that thermal sensitivity in the bitumen used in road construction was zero. Bitumen is a thermoplastic material, meaning that it becomes pliable or moldable above a specific temperature and returns to a solid state upon cooling.
Penetration-grade bitumen is mainly used in road surfacing. Bitumen with lower penetration grade is used in the regions with warm climate while higher penetration grade is used in colder weather.
Pasargad Oil Company is capable of producing different grades of road surfacing bitumen in compliance with national and international standards in its six plants located at Tehran, Tabriz, Arak, Shiraz, Bandar Abbas, and Abadan refineries. Penetration rate bitumen is graded based on penetration and softening point tests. This table describes the physical properties of penetration-grade bitumen based on European standards. Penetration-grade bitumen is mainly used in road construction. During the last two decades of the 20th century, most road construction projects showed inclination for solid bitumen which results in more effective asphalt.
Performance Grade
0تومانPerformance Grade Bitumen is the Latest Standard of bitumen. It is new method bitumen standard which based on varying temperatures. This method studies the mechanical specifications of bitumen. Since in this method, a temperature range is defined for bitumen, the consumer can easily choose the desired product. Performance Grade determined for polymer modified bitumen and pure bitumen based on environmental conditions and temperature. The wider PG Grades Range the higher resistance and more favorable specifications.
Performance Grade (PG)-Bitumen & Tar
0تومانFrom October 1987 to March 1993, Strategic Highway Research Program (SHRP) was conducted in the United States. The program was focused on the development of new methods for assessing the performance of bitumen binders. The research resulted in the development of a new method known as Superior Performing Asphalt Pavements (Superpave).
The main specifications of this method included:
Using the efficiency criterion for bitumen binders and asphalt concrete
Considering climatic conditions in application of bitumen
The problems studied in this method are as follows:
Winter low-temperature bitumen cracking not related to loading
Bitumen fatigue cracking due to loading
Summer high-temperature bitumen deformation due to loading
The primary objective behind determining the new specifications was to facilitate the purchase of bitumen products of better quality because these specifications will clearly describe the product for potential buyers. The new specifications also guarantee the proper performance of bitumen in coating. Climatic conditions are important factors in the efficiency of coating, but limited research has been conducted on this issue due to limited time and quite similar weather conditions. Moreover, they would not be precise if the loading factor is not taken into consideration. The producers all around the world, has been started to produce this type of bitumen which POC is a prominent in this regard. Having installed SHRP systems, Pasargad Oil Company is capable of selling bitumen to its customers based on PG method. It worth to remind that in the past, penetration was used as a factor for bitumen grading. In performance grade, the focus is on the mechanical specification of bitumen while in penetration grade, experimental parameters are involved. In Iran, pen-grade is more common, but in some cases, PG has better be used for a better performance. Today, a PG is defined for polymer modified bitumen and pure bitumen based on environmental conditions and temperature. A wider PG range means higher resistance and more favorable specifications. Pasargad Oil Company has the capacity to produce all these grades. This company first conducted climate zoning in Iran to specify the appropriate bitumen for different geographical zones.
VG Bitumen-Bitumen & Tar
0تومانBitumen is graded based on absolute viscosity at 60 ºC or kinematic viscosity at 135 ºC. The SI physical unit of dynamic viscosity is Poise and kinematic viscosity is expressed in Centi Stokes. Pure bitumen has been graded based on AASHTO-M226 and ASTM-D3381 standards. Tables 1-1 to 1-6 indicate tests and criteria.
Viscosity Grade Bitumen
0تومانThis type of bitumen is utilized to stain cracked surfaces and spray various applications. It can be an alternative for the penetration grade bitumen 80-100 in very cold areas. This category of bitumen is also employed to produce emulsion and modified bitumen.
