engineering recuitment WBPSC JE Civil Mock Test 2022 Highway Engineering Highway Materials and Maintenance
Bitumen grade is specified as 80-100 or \(\frac{80}{100}\) grade, this means :
1
Bitumen content is between 80 to 100.
2
Ductility of bitumen is between 80 to 100 mm.
3
Penetration value of bitumen is between 80 to 100.
4
Temperature of the bitumen is between 80 to 100°C