engineering recuitment GATE CE 2023-24 Test Series Highway Engineering Highway Materials and Maintenance
Bitumen of grade 60/70 means:
1
Its penetration value is 6 mm to 7 mm
2
Its penetration value is 60 cm to 70 cm
3
Its penetration value is 60 mm and softening point is 70
4
Its specific gravity is 0.6 to 0.7