OXIDIZED BITUMEN 115/15 IS BASED ON PETROLEUM BITUMEN WHICH IS MADE BY BLOWING BITUMEN 60/70 BY VERY HOT AIR.
Oxidized Bitumen 90-10 is made by ongoing or Staggered Blowing Process. Heated Penetration bitumen under controlled environment is blown with air which controls oil content in bitumen while it oxidized.
The different grades for suited applications produced are designated by two numbers to indicate the mid-points of their softening point and penetration ranges.
