What is Bitumen Penetration 60-70?
The major Grade Bitumen is Bitumen Penetration 60-70 and It Generally uses for different usages. Penetration grading quantifies the following asphalt concrete characteristics:
Penetration depth of a 100 g needle 25° C (77° F)
Flash point temperature
Ductility at 25°C (77°F)
Solubility in trichloroethylene
Thin film oven test(accounts for the effects of short-term aging that occurs during mixing with hot aggregate)
Ductility at 25° C (77° F)
In addition, Penetration grading’s basic assumption is that the less viscous the asphalt, the deeper the needle will penetrate.
Grading Bitumen Penetration 60-70:
How ever Penetration also specified by softening point and penetration test. Also Designation is by penetration range only. The Penetration Grade Bitumen have a thermoplastic property which causes the material to soften at high temperatures and to harden at lower temperatures. This temperature – viscosity relationship also is important when determining performance parameters such as the adhesion, durability and usage temperatures of bitumen.
Non-parametric performance is important in determining the asphalt performance. Also, Bitumen additives known as promoters and enhancers main role of bitumen in the bitumen increased resistance against permanent deformation at high temperatures. How ever Asphalt modifiers, should not be have a negative effect on bitumen spec in different temperatures. How ever If the elastic and viscous bitumen consists of two parts consider increasing elastic component bitumen, a viscous component is reduced, and this will increase the dynamic stiffness pitch. also Bitumen additives also have been effective, economically and executive is acceptable, readily available and can be blended with bitumen.
Bitumen Penetration 60/70 Spec:
Product Test Data Sheet for Down Load:
bitumen penetration grade is semi hard penetration grade bitumen using as paving grade bitumen suitable for road construction and repair also for the production of asphalt pavements with below technical specification. It also mainly used in the manufacture of hot mix asphalt for bases and wearing courses. Bitumen 60-70 is mostly used bitumen grade and basic material for all other bitumenious products.
Temperature vs stiffness relationship of bitumen is dependent on type of crude oil and its refining method. It used as a paving grade bitumen which is suitable for road construction and repair. It also used for production of asphalt pavements with below technical specification. This grade of bitumen is mainly used in manufacturing of hot mix asphalt for bases and wearing courses. It`s one of most used bitumen grades.
Softening point and penetration of bitumen 60/70:
Globally Bitumen`s Penetration Bitumen is pure petroleum product. It manufactured from vacuum bottom by passing hot air. Furthermore, penetration between 60~70 desi-millimeter and softening point between 48 ~ 52C. It has a thermoplastic property which is like as synthetic resin material which gets softer with heating and hardens when cooled. This grade of bitumen 60-70 has very strong viscosity compare to other grades.
Aging refers to changes at intervals virtues of bitumen 60/70 over time. These changes unit of measure visible as cracks or crumbling areas. Once hydrocarbon is exposed to 0.5 conditions. Bitumen 60/70 molecules react with gas, that amendment of the structure and composition of the organic compound. Mixing with gas, called-oxidation, causes it become brittle, arduous and to vary color from dark brown or black to gray. This ageing happens further oftentimes in hotter condition. Also in heat seasons, inflicting older pavements to crack further just. Condition could in addition occur wherever surface films of hydrocarbon unit of measure skinny, or if there has been inadequate compaction throughout construction.
Guaranty/warranty of Bitumen 60/70:
Globally Bitumen guaranty the quality of Penetration Grade with arrangement of international inspector to check quality and quantity of the bitumen during the loading to vessel and controlling the production by QC by batch test report before shipping. Our guaranty the quality to meet with ASTM/EN 12591.
Our products rigorously conform to specifications of ASTM, AASHTO, EN and other international. Specially contains developed specifications and standards. Also we deploy external Quality Assurance Services from internationally renowned third party inspection companies such as SGS, Geochem, Bureau Veritas, Saybolt, Intertech and many others, to ensure and assure TDS of products delivered under our scope of delivery.
Bitumen 60/70 Test Data Sheet: