The primary purpose of a seal coat in bituminous pavement construction is to:
provide skid resistance and waterproofing
A seal coat is a thin protective surface treatment applied on top of the existing bituminous pavement. Its primary purposes are:
- Waterproofing: Prevents rainwater from infiltrating into the base and subbase layers
- Skid resistance: The aggregate chips in the seal coat provide the necessary surface texture for vehicle traction
- Protects the underlying bituminous layers from oxidation and UV degradation
It does not replace the binder layer or strengthen the base — it only provides a thin protective surface treatment.
Important Questions from Highway Materials and Maintenance
In angularity number test, the angularity number for aggregates used in construction generally ranges from ______.
The percentage of voids is found to be 40% in an angularity test conducted on coarse aggregates sample Calculate its angularity number
The specific gravity of tar ranges from
What is the percentage content of asphalt in the cut-back asphalt?
The penetration value of residue from distillation upto 360°C of rapid curing cutbacks bitumen is -
