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
The damaged material on the surface of road which is removed by rubbing or chipping action is called:
The bitumen that is obtained as a residue during the distillation of a high-resin petroleum is called:
The Indian Road Congress (IRC) recommends what value of camber for gravel or water bound macadam road surface subject to heavy rains?
The toughness property of coarse aggregates can be assessed by conducting which laboratory experiment?
In the Aggregate impact value test, as per IS: 2386 (part IV), the test sample should pass and retain through which of the following sieve size?
