
Bitumen Penetration grade 40/60 Description
Bitumen Penetration Grade 40/60 is a standard penetration grade Bitumen usually used as a Paving Grade Bitumen suitable for road construction and for the production of asphalt pavements with superior properties. This grade of Bitumen is mainly used in the manufacture of hot mix asphalt for bases and wearing courses. Penetration Grade Bitumen supplied by ZUMRUT Co is petroleum grade bitumen, manufactured from fractional / vacuum distillation of crude oil. The Bitumen supplied by ZUMRUT is produced from the vacuum residue (short residue) feedstock. Penetration Grade bitumens are specified by the penetration and softening point test. The designation is by penetration range only. The penetration grade bitumens have a thermoplastic property which causes the material to soften at high temperatures and to harden at lower temperatures. This unique temperature/ viscosity relationship is important when determining the performance parameters such as the adhesion, rheology, durability and application temperatures of bitumen.
Bitumen Penetration Grade 40/60, often simply referred to as “pen grade bitumen 40/60,” is a specific type of bituminous binder used extensively in road construction and other applications. Here is a detailed description:
Characteristics:
- Penetration Value : The 40/60 grade signifies a penetration range of 40 to 60 decimillimeters (0.1 mm) when a standard needle penetrates the bitumen sample under a load of 100 grams for 5 seconds at 25°C. This penetration value indicates the relative hardness or softness of the bitumen, with lower values denoting harder bitumen.
- Viscosity : It has moderate viscosity, meaning it flows well at elevated temperatures but maintains enough stiffness at lower temperatures to provide structural integrity.
- Softening Point : Typically ranges from 48°C to 56°C. The softening point test determines the temperature at which the bitumen softens and becomes pliable, which is crucial for understanding how it will behave under heat.
- Ductility : Bitumen 40/60 exhibits good ductility, ensuring it can stretch under stress without breaking, which helps in preventing cracks in pavements.
- Specific Gravity : Approximately 1.01 to 1.06, indicating it is slightly denser than water.
Bitumen Penetration grade 40/60 Application
Bitumen Penetration Grade 40/60 is widely used in various applications, particularly in road construction and related fields. Below are the key applications of this bitumen grade:
Road Construction
1- Asphalt Concrete Production:
– Surface Courses : Bitumen 40/60 is used in the production of asphalt concrete for the top layers of road surfaces, known as surface courses, providing a durable, smooth, and weather-resistant finish.
– Binder Courses : It is also utilized in binder courses, the intermediate layers of the pavement structure, which provide load distribution and structural support.
2- Road Surfacing and Resurfacing :
– New Road Construction : Employed in constructing new roads, offering excellent binding properties that ensure the aggregates remain cohesive and stable under traffic loads.
– Maintenance and Repairs : Used in the maintenance and resurfacing of existing roads, helping to restore the road surface to its original condition and extending its lifespan.
Paving and Infrastructure
- Parking Lots and Driveways : Bitumen 40/60 is commonly used in paving parking lots and driveways, providing a smooth, durable, and resilient surface that can withstand regular vehicular traffic.
- Airport Runways and Taxiways : Its durability and resilience make it suitable for use in the construction of airport runways and taxiways, which require high-performance materials to endure the stress from aircraft movements.
Industrial Applications
1- Asphalt Mixtures for Industrial Areas : Utilized in industrial areas where heavy machinery operates, providing a robust and long-lasting surface that can handle significant loads and wear.
Waterproofing and Roofing
1- Roofing Felt and Membranes : While not as common as in paving, Bitumen 40/60 can be used in the production of roofing felt and waterproof membranes, offering water-resistant properties for building protection.
Special Applications
- Bridge Decks and Flyovers : Utilized in the construction of bridge decks and flyovers, where durable and flexible materials are needed to accommodate structural movements and heavy loads.
- Sports Courts and Playgrounds : Used in the construction of sports courts and playground surfaces, providing a smooth, resilient, and safe playing surface.
Benefits in Applications
- Durability and Longevity : Provides a long-lasting surface that can endure various traffic loads and weather conditions.
- Flexibility and Crack Resistance : Offers good flexibility, reducing the likelihood of cracks and other surface deformities.
- Adhesive Properties : Ensures a strong bond with aggregates, resulting in a cohesive and stable pavement structure.
- Weather Resistance : Performs well in moderate climates, maintaining its properties without significant degradation due to temperature variations.
Packing of Bitumen 40/60
Paving Bitumen 40/60 is commonly packed in new steel drums, 150, 180 & 220 Kg barrels and 1MT and 500Kg Jumbo Bags or 300kg Bitubag.
Likewise, the rest of the grades are ready to load Ex-work bulk ZUMRUT Co. by truck.
Guaranty and safety of bitumen 40/60
- Guaranty
Quality Assurance :
– Industry Standards : Bitumen 40/60 is produced and tested according to international standards such as ASTM (American Society for Testing and Materials) and EN (European Norms). Compliance with these standards ensures consistency in quality and performance.
– Manufacturer Certification : Reputable manufacturers provide quality certificates and product data sheets, guaranteeing that the bitumen meets the specified penetration grade and other relevant properties. - Performance Warranty :
– Longevity : When applied correctly, Bitumen 40/60 can provide long-lasting performance, ensuring durable pavements that can withstand moderate traffic loads and weather conditions for many years.
– Maintenance : Manufacturers may offer performance warranties that cover the bitumen’s functionality over a specified period, provided that the product is used and maintained according to recommended guidelines. - Technical Support :
– Application Guidance : Manufacturers often provide technical support and guidelines on the proper handling, storage, and application of Bitumen 40/60, helping to ensure optimal performance and longevity.
– Post-Application Assistance : Support may also include assistance with any issues that arise post-application, ensuring that any problems can be quickly addressed and resolved.
Safety
- Handling and Storage :
– Personal Protective Equipment (PPE) : When handling hot bitumen, workers should wear appropriate PPE, including heat-resistant gloves, face shields, long sleeves, and safety boots, to protect against burns and exposure to fumes.
– Storage Conditions : Bitumen should be stored in well-ventilated areas, away from ignition sources, and at temperatures recommended by the manufacturer to prevent degradation and ensure safety. - Health and Environmental Safety :
– Fume Control : During heating and application, bitumen can release fumes that may be harmful if inhaled. Proper ventilation and fume extraction systems should be used to protect workers’ health.
– Environmental Impact : Bitumen should be handled and disposed of according to environmental regulations to prevent contamination of soil and water. Spills should be contained and cleaned up promptly. - Application Safety :
– Proper Equipment : Use appropriate equipment for heating and applying bitumen to minimize risks associated with high temperatures and hot material handling.
– Training : Workers should be trained in safe handling practices, emergency procedures, and the proper use of equipment to reduce the risk of accidents and injuries. - Emergency Procedures :
– Spill Response : Have a spill response plan in place to address accidental releases of bitumen. This includes having materials and equipment ready to contain and clean up spills.
– First Aid : Provide first aid training and resources for workers to handle burns, inhalation of fumes, and other potential injuries related to bitumen handling.
Bitumen Penetration grade 40/60 Specifications
| Bitumen 40/60 | Test method | Unit | Specification |
| Penetration – 25°C, 100g, 5s | EN 1426 | mm | 40-60 |
| Softening Point (Ring & Ball) | EN 1427 | °C | 48/56 |
| Kinematic Viscosity @ 135⁰C | EN 12595 | mm²/s | 325 Min |
| Solubility in Xylene | EN 12592 | % | 99 Min |
| Flashpoint (Cleveland Open) | EN 22592 | °C | 230 Min |
| Recistance to Hardening at 163 °C | |||
| Change in mass (m/m) | EN12607-1 | % | 0.5 Max |
| Retained Penetration 25°C, 100g, 5s (% of original) | EN 1426 | % | 50 Min |
| Increase in softening point | EN 1427 | °C | 11 Max |



