Pavement preservation is the proactive maintenance of roads to prevent them from getting to a condition where major rehabilitation or reconstruction is necessary. Preventative maintenance costs are far less than the ultimate repair cost. The diagram above is a typical life-cycle curve for a pavement. The curve is fairly flat in the initial years of the life-cycle curve, then as it ages, the pavement condition declines to a poor condition after it has aged approximately 75% of its life (typically 20 years). As shown on the curve as the pavement condition worsens the treatment changes resulting in higher treatment costs.
HA5 is a High Density Mineral Bond surface treatment that extends asphalt serviceability
- Significantly extends pavement life
- Lower cost of pavement ownership/management
- No loose aggregate or grainy residue on the surface post installation
- Millions of square yards installed by municipalities
- Performance backed by seven year study
- Installations guaranteed up to 5 years
- High public approval
EXTENDING ASPHALT SERVICE LIFE
HA5 was developed to meet the demand for effective asphalt preservation on roadways without the negative side effects of chip seals or slurry seals. HA5 was specifically engineered to preserve the native asphalt binder. Effectively preserving the asphalt binder before oxidative damage takes place is recognized as the most cost-effective strategy for managing asphalt pavement.
Due to the asset preservation qualities and durability of the installations, HA5 is also a surface treatment specified by owners and managers responsible for asphalt parking surfaces. School districts, religious organizations, medical providers, and various business types
utilize HA5 for asset preservation due to the measurable return investment. HA5 installations are backed with up to a 5 year guarantee.
WHAT IS HA5?
HA5 is a High Density Mineral Bond uniquely emulsified with a near neutral charge that is able to hold a proprietary blend of fine aggregates.
Limiting oxidative damage from moisture is fundamental to HA5’s preservation qualities.
But just as critical to the prevention of oxidative damage from moisture is preventing oxidative damage from UV rays. UV rays are strong throughout the western U.S., especially in higher elevations as well as desert regions.
HA5 combats oxidation from UV rays by including limited amounts of specific polymers to reflect damaging UV rays.
TESTED, PROVEN PERFORMANCE
HA5 has been independently evaluated by Nolte Engineering and was recommend as a superior option to slurry seals on residential (lower load/volume) roadways and parking surfaces.
400% Less Cracking
In 2009, an evaluation was conducted that compared the oxidative damage of an asphalt street having HA5 installed to an adjoining street not having HA5 installed. The pavements evaluated were both 11 years old, with one having had HA5 installed at year six. The pavement with HA5 installed had 400% less cracking.
For HA5 to be properly installed, specialized equipment is required that can uniformly disperse a thixotropic material housing the required density of fine aggregate.
HA5 installations are backed by a five year warranty. Contact a Whitaker Contracting representative for complete warranty details.