Bituminous Asphalt Chip Seals
Bituminous Asphalt Chip Seals have been used for many years on lower volume secondary roadways and offer a lower cost pavement preservation strategy for all categories of road agencies, private, home owners associations, municipal, state, etc. chip seals offer several benefits, they are listed herein for your convenience.
Alternative to traditional Hot Mix Asphalt (HMA)
Home owners also reap the benefits from chip seals giving their property a unique and pleasing appearance. A country/cottage look can be achieved with aggregates ranging in a variety of colors and size that coordinate with existing or planned landscapes.
Traditional asphalt surfaces may become slippery over time because of aggregate polishing due to wear/over sealing the surface with coal tar products. Chip seal aggregate is exposed and results in a great friction/wear course when compared to traditional asphalt surfaces. Upon completion the chip seal surface offers a waterproof layer that prevents the intrusion of water/moisture into the underlying base courses. Also, oxidation is reduced to the existing pavement surface.
Construction of Bituminous Asphalt Chip Seals
Every project begins with the proper equipment and experienced crew members in all aspects of the application procedures. Chip Sealing equipment can be very costly to purchase and to maintain. Initial investments can be in the hundreds of thousands of dollars. However, the importance of modern equipment with metering devises is crucial.
The asphalt distributor truck should have metering devises and be carefully calibrated to assure the liquid bituminous asphalt emulsion material is properly applied at the required rate and temperature. The correct angle of the spray nozzles and spray bar height is essential to achieve the proper overlap of liquid bituminous asphalt emulsion materials. A dedicated aggregate chip spreader should also have the same metering devises for proper placement of the specified cover coat aggregate at the required rate.