penetration 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.
This grade of Bitumen is mainly used in the manufacture of hot mix asphalt for bases and wearing courses. Penetration Grade Bitumen by Capco trading Co. is petroleum grade bitumen, manufactured from fractional / vacuum distillation of crude oil. The Bitumen supplied by Capco trading Co. is produced from vacuum residue (short residue) feedstock.
Bitumen is usually characterized in the following three types of grades:
· Viscosity grades
· Penetration grades
· Density grades
Definition of penetration Grade
The penetration grades bitumen is refinery bitumen which is produced by different viscosity. In fact, Penetration bitumen is semi hard black material known as petroleum grade bitumen. The penetration test is carried out to characterize the bitumen, based on the hardness. Therefore, it has the name penetration bitumen. Penetration 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.
it is Bitumen classified using the penetration property. Penetration grading’s basic assumption is that the less viscous the asphalt, the deeper the needle will penetrate. Bitumen which is produced during the process of oxidation of vacuum bottom (the Bitumen production feedstock that derives from distillation tower residue in vacuum oil refineries) at bitumen production unit in a manner that its penetration point (kind of test to indicate the hardness of bitumen) in specified group is classified in different grade of it.
This grade of Bitumen is mainly used in the manufacture of hot mix asphalt for bases and wearing courses.
The penetration of bituminous material is its consistency expressed as the distance in tenths of a millimeter that a standard needle penetrates vertically into a specimen of the material under specified conditions of temperature, load and duration of loading.
Grades of straight-run bitumen are designated by two penetration values, for example, 40/50, 60/70, 85/100 etc.; the Penetration of an actual sample of the bitumen in any grade should fall between the lower and upper value given.
Penetration Grades bitumen are specified by the penetration and softening point test. Designation is by penetration range only. The penetration grades of bitumen 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. Capco trading Co supplies all Penetration Graded Bitumen Grades in correspondence to ASTM D946-09 and EN 12591-2009, including:
Petroleum Bitumen Specifications
1) Penetration degree: Penetration test is used to determine bitumen hardness. In this test, a standard needle under the influence of a 100-gram load penetrates into bitumen at 25 ° C for 5 seconds. The penetration value in terms of the tenth of millimeters is called penetration degree. The lower the degree of penetration is, the harder the bitumen will be.
2) Viscosity: The higher the bitumen viscosity is, the higher solid properties it shows. Clearly, at lower temperatures, the viscosity is smaller. This property of bitumen characteristic is measured using the Saybolt Furol machine or by the kinematic method.
3) Flash point: The Flash point is the temperature that, if the bitumen reaches that temperature, the resulting gases will ignite when the flame approaches, and a flame occurs at its surface. The maximum temperature at which the bitumen can be heated in the workshop is limited to the flash point.
4) Weight loss on heating: The weight loss of bitumen at high temperature is due to the evaporation of a part of its oil and its petroleum compounds. This characteristic is also of significant properties of bitumen. The weight loss of bitumen is measured at the temperature of 163° C and within 5 hours (approximate conditions for cooking asphalt).
5) Ductility: If we pull a sample of bitumen with a cross-section of 1 cm 2 at a speed of 5 cm / min, we increase the length of the sample before tearing the ductility property of bitumen.
6) Solubility in CS2: We know the solvent of bitumen is carbon tetra-chloride and carbon-sulfur. So, if we dissolve a sample of bitumen in each of these materials, its impurities remain, and we can determine the purity of bitumen. The degree of purity is: (sample bitumen weight) ÷ [(impurity weight) – (bitumen weight)]
7) Softening point: The softening point is the temperature when the bitumen reaches that temperature, the bitumen becomes fluid. The higher the bitumen softening point, the lower the sensitivity to temperature variations. The softening point of ordinary bitumen is about 60 to 70
Bitumen Application and Uses
Known for its adhesive and cohesive assets, bitumen is mostly utilized in the construction industry. Bitumen is applied on road paving because it is viscous when hot, but solid once it cools down. Therefore, Bitumen operates as the binder/glue for pieces of the aggregate. Bitumen is applied in construction and maintenance of:
· Airport runways
· Footways / Pedestrian Ways
· Car parks
· Tennis courts
· Damp proofing
· Reservoir and pool linings
· Pipe coatings
· Cable Coatings
· Building Water Proofing
· Tile underlying waterproofing
· Newspaper Ink Production
· And many other applications
In order realize the complexity of bitumen as a product an in-depth knowledge and detailed understanding for one of the ways the roads are built is crucial. Specialists in bitumen know bitumen as an advanced and complex construction material, not as a mere by-product of the oil refining process. The ultimate paving material (also referred to hot mix asphalt concrete – HMAC or HMA) consists of about 93 – 97% mineral aggregate (stone), sand and filler. The remaining percentage is bitumen.
Packing of bitumen in drum, jumbo bag and 300kg polycube and packing of all grades could be same.
- Drum: per 20ft container we are loading 110 drums. Each drum is 185 kg Net and 195 Kg gross weight. In case of ordering other drum sizes line 120, 145 or 150 also able to deliver.
· Jumbo bag: Another option for packing of bitumen 60/70 is jumbo bag which is 800 kg to 1200kg and able to load in 40ft and 20ft containers.
· Polycube: The best packing right now is Polycube which is 300kg bags and 80 pcs able to stuff in 20ft container. It is economic packing and cut the transport cost and compete with other packing now. 24 tons per container and no waist of bitumen during melting is the benefit.
· Bulk Packing: Bulk packing of bitumen 60/70 is two way, we transit by truck tanker which is dual layer and can remain liquid during the transit up to seven days then at destination it will discharge easily and without heating. In case bitumen get cold buyer can heat up via special channel in backside of tanker and inject the fire in the pipeline between the tank to heat the bitumen and there is exhaust on the front of tanker and the fire passing whole of tank. This way of delivery is good for neighbor customers. For far destination is not economy.