Rumays Intl. Trading Co.
Rumays Intl. Trading Co.
What is Performance Graded Bitumen?
Performance grade (PG) bitumen is bitumen which is graded based on its performance at different temperatures. In super-pave grading system, binders are classified according to their performance in extreme hot and cold temperatures and called as performance grade (PG) bitumen.
The main purpose of grading and selecting asphalt binder using the PG system is to make certain that the binder has the appropriate properties needed for environmental conditions it’s going to be used in. PG asphalt binders are selected to meet expected climatic conditions as well as traffic speed and volume adjustments. Therefore, the PG system uses a set of tests to measure physical properties of the binder which can be directly related to field performance in the paving situation.
Long-Term Pavement Performance (LTPP) has provided a method and the certain algorithm for calculating the temperature of the pavement based on the temperature of the air above. This relatively new approach of classifying bitumen is based on temperature variations. It is a completely scientific method for studying the mechanical properties of bitumen. A temperature range for bitumen is specified in this method, and the consumer may readily select the required product. The greatest and lowest temperatures of the pavement are estimated as a result, and the bitumen that works effectively in that temperature range is selected.
The PG grading system is defined by two numbers, representing the pavement temperatures. The first number e.g.: PG 64-XX represents the highest pavement temperature in Celsius, while the second number e.g.: PG XX-22 represents the lowest. Note that these numbers are pavement temperatures, not the air temperatures (these pavement temperatures are derived from air temperatures).
A wider PG range means higher resistance and more favorable specifications.
Bitumen PG 76-10 Specification
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| Specification | Unit | Value | Method. | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Average 7-Day Maximum Pavement Design Temperature | °C | 76 | - | ||||||
| Minimum Pavement Design Temperature | °C | > -10 | - | ||||||
| Flash Point Temperature | °C | Min230 | AASHTO T48 | ||||||
| Viscosity Maximum 3 Pa.s, Test Temperature | °C | 135 | AASHTO T316 | ||||||
| Dynamic Shear G*/sin Minimum 2.2 KPa Test Temperature | °C | 76 | AASHTO T315 | ||||||
| Rolling Thin Film Oven Test | |||||||||
| Mass Change | % | Max1.00 | AASHTO T240 | ||||||
| Dynamic Shear G*/sin Minimum 2.2 KPa Test Temperature, @10 rad/s | °C | 76 | AASHTO T315 | ||||||
| Pressure Aging Vessel | |||||||||
| PAV Aging Temperature | °C | 100 | AASHTO R28 | ||||||
| Dynamic Shear G*/sin Maximum 5000 KPa Test Temperature, @10 rad/s | °C | 37 | AASHTO T315 | ||||||
| Creep Stuffiness S Maximum 300 Mpa M-Value Minimum 0.300 Test Temp,@60s | °C | 00 | AASHTO T313 | ||||||
| Direct Tension Failure Strain Minimum 1 % Test Temp@1mm/min, | °C | 0 | AASHTO T314 | ||||||
| Critical Low Cracking Temperature Critical Cracking Determined by PP42 Test Temp | - | 00 | AASHTO PP42 | ||||||
Bitumen PG 46-22 Specification
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| Specification | Unit | Value | Method. | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Average 7-Day Maximum Pavement Design Temperature | °C | 46 | - | ||||||
| Minimum Pavement Design Temperature | °C | > -22 | - | ||||||
| Flash Point Temperature | °C | Min230 | AASHTO T48 | ||||||
| Viscosity Maximum 3 Pa.s, Test Temperature | °C | 135 | AASHTO T316 | ||||||
| Dynamic Shear G*/sin Minimum 2.2 KPa Test Temperature | °C | 46 | AASHTO T315 | ||||||
| Rolling Thin Film Oven Test | |||||||||
| Mass Change | % | Max1.00 | AASHTO T240 | ||||||
| Dynamic Shear G*/sin Minimum 2.2 KPa Test Temperature, @10 rad/s | °C | 46 | AASHTO T315 | ||||||
| Pressure Aging Vessel | |||||||||
| PAV Aging Temperature | °C | 100 | AASHTO R28 | ||||||
| Dynamic Shear G*/sin Maximum 5000 KPa Test Temperature, @10 rad/s | °C | 46 | AASHTO T315 | ||||||
| Creep Stuffiness S Maximum 300 Mpa M-Value Minimum 0.300 Test Temp,@60s | °C | -24 | AASHTO T313 | ||||||
| Direct Tension Failure Strain Minimum 1 % Test Temp@1mm/min, | °C | -24 | AASHTO T314 | ||||||
| Critical Low Cracking Temperature Critical Cracking Determined by PP42 Test Temp | - | -24 | AASHTO PP42 | ||||||
Bitumen PG 64-22 Specification
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| Specification | Unit | Value | Method. | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Average 7-Day Maximum Pavement Design Temperature | °C | 64 | - | ||||||
| Minimum Pavement Design Temperature | °C | > -22 | - | ||||||
| Flash Point Temperature | °C | Min230 | AASHTO T48 | ||||||
| Viscosity Maximum 3 Pa.s, Test Temperature | °C | 135 | AASHTO T316 | ||||||
| Dynamic Shear G*/sin Minimum 2.2 KPa Test Temperature | °C | 64 | AASHTO T315 | ||||||
| Rolling Thin Film Oven Test | |||||||||
| Mass Change | % | Max1.00 | AASHTO T240 | ||||||
| Dynamic Shear G*/sin Minimum 2.2 KPa Test Temperature, @10 rad/s | °C | 64 | AASHTO T315 | ||||||
| Pressure Aging Vessel | |||||||||
| PAV Aging Temperature | °C | 100 | AASHTO R28 | ||||||
| Dynamic Shear G*/sin Maximum 5000 KPa Test Temperature, @10 rad/s | °C | 46 | AASHTO T315 | ||||||
| Creep Stuffiness S Maximum 300 Mpa M-Value Minimum 0.300 Test Temp,@60s | °C | -24 | AASHTO T313 | ||||||
| Direct Tension Failure Strain Minimum 1 % Test Temp@1mm/min, | °C | -24 | AASHTO T314 | ||||||
| Critical Low Cracking Temperature Critical Cracking Determined by PP42 Test Temp | - | -24 | AASHTO PP42 | ||||||
Bitumen PG 70-10 Specification0
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| Specification | Unit | Value | Method. | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Average 7-Day Maximum Pavement Design Temperature | °C | 70 | - | ||||||
| Minimum Pavement Design Temperature | °C | > -10 | - | ||||||
| Flash Point Temperature | °C | Min230 | AASHTO T48 | ||||||
| Viscosity Maximum 3 Pa.s, Test Temperature | °C | 135 | AASHTO T316 | ||||||
| Dynamic Shear G*/sin Minimum 2.2 KPa Test Temperature | °C | 70 | AASHTO T315 | ||||||
| Rolling Thin Film Oven Test | |||||||||
| Mass Change | % | Max1.00 | AASHTO T240 | ||||||
| Dynamic Shear G*/sin Minimum 2.2 KPa Test Temperature, @10 rad/s | °C | 70 | AASHTO T315 | ||||||
| Pressure Aging Vessel | |||||||||
| PAV Aging Temperature | °C | 100 | AASHTO R28 | ||||||
| Dynamic Shear G*/sin Maximum 5000 KPa Test Temperature, @10 rad/s | °C | 34 | AASHTO T315 | ||||||
| Creep Stuffiness S Maximum 300 Mpa M-Value Minimum 0.300 Test Temp,@60s | °C | 00 | AASHTO T313 | ||||||
| Direct Tension Failure Strain Minimum 1 % Test Temp@1mm/min, | °C | 0 | AASHTO T314 | ||||||
| Critical Low Cracking Temperature Critical Cracking Determined by PP42 Test Temp | - | 00 | AASHTO PP42 | ||||||
Bitumen PG 82-10 Specification
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| Specification | Unit | Value | Method. | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Average 7-Day Maximum Pavement Design Temperature | °C | 82 | - | ||||||
| Minimum Pavement Design Temperature | °C | > -10 | - | ||||||
| Flash Point Temperature | °C | Min230 | AASHTO T48 | ||||||
| Viscosity Maximum 3 Pa.s, Test Temperature | °C | 135 | AASHTO T316 | ||||||
| Dynamic Shear G*/sin Minimum 2.2 KPa Test Temperature | °C | 82 | AASHTO T315 | ||||||
| Rolling Thin Film Oven Test | |||||||||
| Mass Change | % | Max1.00 | AASHTO T240 | ||||||
| Dynamic Shear G*/sin Minimum 2.2 KPa Test Temperature, @10 rad/s | °C | 82 | AASHTO T315 | ||||||
| Pressure Aging Vessel | |||||||||
| PAV Aging Temperature | °C | 100 | AASHTO R28 | ||||||
| Dynamic Shear G*/sin Maximum 5000 KPa Test Temperature, @10 rad/s | °C | 40 | AASHTO T315 | ||||||
| Creep Stuffiness S Maximum 300 Mpa M-Value Minimum 0.300 Test Temp,@60s | °C | 00 | AASHTO T313 | ||||||
| Direct Tension Failure Strain Minimum 1 % Test Temp@1mm/min, | °C | 0 | AASHTO T314 | ||||||
| Critical Low Cracking Temperature Critical Cracking Determined by PP42 Test Temp | - | 00 | AASHTO PP42 | ||||||
Bitumen PG 85-16 Specification
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| Specification | Unit | Value | Method. | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Average 7-Day Maximum Pavement Design Temperature | °C | 58 | - | ||||||
| Minimum Pavement Design Temperature | °C | > -16 | - | ||||||
| Flash Point Temperature | °C | Min230 | AASHTO T48 | ||||||
| Viscosity Maximum 3 Pa.s, Test Temperature | °C | 135 | AASHTO T316 | ||||||
| Dynamic Shear G*/sin Minimum 2.2 KPa Test Temperature | °C | 58 | AASHTO T315 | ||||||
| Rolling Thin Film Oven Test | |||||||||
| Mass Change | % | Max1.00 | AASHTO T240 | ||||||
| Dynamic Shear G*/sin Minimum 2.2 KPa Test Temperature, @10 rad/s | °C | 58 | AASHTO T315 | ||||||
| Pressure Aging Vessel | |||||||||
| PAV Aging Temperature | °C | 100 | AASHTO R28 | ||||||
| Dynamic Shear G*/sin Maximum 5000 KPa Test Temperature, @10 rad/s | °C | 25 | AASHTO T315 | ||||||
| Creep Stuffiness S Maximum 300 Mpa M-Value Minimum 0.300 Test Temp,@60s | °C | -6 | AASHTO T313 | ||||||
| Direct Tension Failure Strain Minimum 1 % Test Temp@1mm/min, | °C | -6 | AASHTO T314 | ||||||
| Critical Low Cracking Temperature Critical Cracking Determined by PP42 Test Temp | - | -6 | AASHTO PP42 | ||||||
PG 52-10
PG 52-16
PG 52-22
PG 52-28
PG 58-10
PG 58-16
PG 58-22
PG 58-28
PG 64-10
PG 64-16
PG 64-22
PG 64-28
PG 70-10
PG 70-16
PG 70-22
PG 70-28
PG 76-10
PG 76-16
PG 76-22
PG 76-28
PG 82-10
PG 82-16
PG 82-22
PG 82-28
• Include measures describing stress
– strain Relationships under field loading.
• Consider the pavement conditions
– Temperature, traffic speed, traffic volume, and pavement structure.
• Include acceptance limits derived from experience and actual field performance.
Variables that affect Binder Selection
• Geographic Area:
– Air Temperature, solar radiation
– Pavement Temperature: Max & Min
• Traffic volume: High, Medium, Low
• Traffic speed: Fast, Slow
• Pavement Structure: Strong, Weak
– Stress and strain
Performance Grade Bitumen is commonly applied in pavement constructions and reconstructions, sealing of edges, crack sealing, spray applications for the bridge deck waterproofing and some other applications in both dense-graded and open-graded Hot Mix Asphalt (HMA).
Performance Grading Should consider the actual conditions of different paving projects, since it’s dominantly used for paving, such as strain relationship under the field load, traffic speed and volume and the pavement structure. PG asphalt binders are chosen to accommodate anticipated climatic variables as well as changes in traffic speed and volume.
PG52-28 is dominantly used in paving for both new construction and road care and also in both dense-graded and open graded Hot Mix Asphalt (HMA). This product could also be used for sealing cracks in paving and also the edges. Other applications include spraying in places like bridge deck and pavement protective membrane with fabrics.
PG58-22 is initially used in paving for both dense-graded and open graded Hot Mix Asphalt (HMA) and also in road construction usages as well as spraying and crack sealing applications. This grade is widely used in very cold areas.
PG58-34 is generally used in the higher elevation roadways. This grade is a paving asphalt cement dominantly used for the production of Hot Mix Asphalt (HMA). It could also be used for sealing the edges of new to old paving and cracks sealing.
PG58-40 is primarily used on the high elevation locations. This grade is paving asphalt for the production of Hot Mix Asphalt (HMA). It can be easily used for sealing purposes and crack treating as well.
PG64-22 is mostly used in paving for both new construction and pavement treatment projects and in both dense-graded and open graded Hot Mix Asphalt (HMA) as well as others. It can be easily used for sealing purposes and crack treating too. Other uses include spray applications for bridge decks and pavement protective layer with fabrics and some modifications. It has been reported that with proper aggregate selections and asphalt content, HMA with PG64-22 as the binder may show less tenderness compared to a similar mixture with a lower viscosity/softer asphalt. This will lead to a significant reduction of typical tenderness problems of mixture shoving and checking during pavement surface scuffing and rolling and markings caused by traffic immediately after paving.
PG64-28 is primarily used in road construction and paving for new and pave care projects and in both dense-graded and open-graded HMA. Other uses include spray applications for bridge deck and pavement protective layer with fabrics. PG64-28 is generally used for the locations with low elevation.
PG70-22 is primarily used in areas with high traffic volume and is also the paving asphalt cement used for the production of Hot Mix Asphalt (HMA). This grade is also a good choice for sealing the edges of pavement and for crack sealing.
PG Grades with the best resistance that are well-structured against thermal cracking in thermal cracking:
PG 64 -22
PG 76 -22
PG 64 -28
PG 58 -34
PG Grades with the best resistance against rutting:
PG 82 -22
PG 76 -28
PG 70 -28
PG 70 -22
PG 58-28
is specifically used in very cold regions.
Common in toll roads (high Volume)
PG 64-22
Common in toll booth (high volume and slow traffic)
PG 70-22
Common in the rest area (high volume and standing traffic)
PG 76-22
Superiorities & Advantages of Performance Grade (PG) Bitumen
The Superpave performance grading system makes use of a new set of bitumen tests. The method incorporates the following salient features:
Performance Grade (PG) Bitumen Nomenclature
The Performance Grading System is based on climate, so the grade notation consists two portions: high and low pavement service temperature. The major concern for high-temperature performance is rutting, which typically takes time to cumulate, therefore an average of 7-day maximum pavement temperature is used for describing the high-temperature climate. On the low-temperature side, thermal cracking can happen during the one really cold night; therefore the minimum pavement temperature is used for describing the low-temperature climate. For both high and low-temperature grade, PG grades are graded in 6°C increment. The average 7-day maximum pavement temperature typically ranged from 46 to 82°C, and minimum pavement temperature typically ranged from −46°C to −10°C.
The PG grading system is defined by two numbers, which represent pavement temperatures. The first number PG 64-XX represents the high pavement temperature in degrees Celsius, while the second number PG XX-22 represents the low pavement temperature. Notice that these numbers are pavement temperatures and not air temperatures (these pavement temperatures are estimated from air temperatures using an algorithm contained in the LTPP Bind program). All adjustments to the PG grading system are made in six (6) degree increments. The high temperature relates to the effects of rutting and the low temperature relates to cold temperature and fatigue cracking.
A binder identified as PG 64-10 must meet performance criteria at an average 7-day maximum pavement temperature of 64°C and also at a minimum pavement temperature of −10°C. Please note that maximum pavement temperature is typically higher than the air temperature by about 20°C since the dark color pavement absorbs the heat and retains it. The maximum pavement temperature is typically measured at about 1 inch below the pavement surface. However, the minimum pavement temperature occurs on the surface of the pavement and is equal to the air temperature.
Rumays Intl. Trading Co.
is one of the petroleum and petrochemical market leaders in the bitumen industry.
Our Wide Range of Innovative Bitumen Products are designed to meet the Challenges of Road Construction, Roofing, Coating, Water Proofing & Airport sectors, alongside Specialty & Industrial applications.
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