Industrial Grade Bitumen
(IS:702)
Straight Grade Bitumen is processed in our plant for a longer period. By this process, Bitumen becomes sludge/moisture free and softening/penetration values are improvised to a great extent. This is called Blown Bitumen and the same has the wide range of industrial applications. These Grades are further distinguished depending upon their softening points and penetration values.
Grade 85/25, 90/15, 115/15
Industrial grade bitumen is used in waterproofing, damp proofing, acid/alkali resistant, subflooring, canal lining, road construction, joint fillers, lamination, battery sealing, a base for cable joining compound and manufacturing of paints, printing inks, explosives etc.
Benefits / Advantages of VG Bitumen over Penetration grade:
VG system is based on fundamental engineering parameter(not empirical)
Viscosity is measured at 60degree C and 135degree C, which takes care of both low and high-temperature susceptibility of the binder, which is not possible with penetration value at 25degreeC. Hence pavement engineers, contractors/consultants can have a better understanding of the binder’s performance in the field.
Any two same viscosity grade bitumens would give similar rutting performance in the field.
Greater ease of handling to customers as Viscosity Value at two different temperatures(60degreeC and 135degree C) is available, which would enable users to measure accurate mixing and compaction temperatures.
Minimum specified Kinematic Viscosity value at 135degree C helps to minimize the potential of tender mixes during construction.
Viscosity graded bitumens are suitable for a wide range of temperature: 25degreeC for raveling/fatigue cracking. 60degreeC for rutting and 135degreeC for construction(mixing and compaction).
IS 73-2006 has only 7 tests to evaluate a sample compared to 14 tests in penetration grade system. This reduces time and cost of testing without sacrificing its quality.