Bituminous Surface Treatment | Bituminous Surface Treatment Cost | Bituminous Pavement Failure
Dec 5, 2022
What are Bituminous Surface Treatments(BST)
A chip seal or seal coat is a bituminous surface treatment (BST). It’s a surface treatment made of liquid asphalt and a thin layer of gravel that’s about 0.5 inches thick or less. Most of the time, BSTs are used on sidewalks with less traffic.
All of the following can be done with BSTs:
- A waterproof layer on top of the pavement protects it.
- Increased resistance to slipping.
- Filler for surfaces that are already broken or torn.
- A surface that doesn’t reflect light when it’s wet and a surface that reflects more light at night.
Since the 1920s, BSTs have been used, mostly on gravel roads with low traffic. BSTs are being used more and more as a form of preventive maintenance on flexible pavements that have a good structure.
